Northeastern British Columbia, Canada, is undergoing rapid in-migration of young, primarily male,... more Northeastern British Columbia, Canada, is undergoing rapid in-migration of young, primarily male, workers in response to the "boom" in the oil/gas industries. Chlamydia rates in the region exceed the provincial average by 32% (294.6 cases per 100 000 persons compared with 213.3). Evidence indicates that sociocultural and structural determinants of young people's sexual health are key to consider in the design of interventions. To investigate how sociocultural and structural features related to the oil/gas boom are perceived to affect the sexual behaviour of youth in a Northeastern "boomtown". The study included ethnographic fieldwork (8 weeks) and in-depth interviews with 25 youth (ages 15-25 years) and 14 health/social service providers. Participants identified four main ways in which the sociocultural and structural conditions created by the boom affect sexual behaviours, fuelling the spread of sexually transmitted infections (STIs): mobility of oil/gas workers; binge partying; high levels of disposable income and gendered power dynamics. The sociocultural and structural conditions that are fostered by a resource-extraction boom appear to exacerbate sexual health inequalities among youths who live and work in these rapidly urbanising, remote locales. To meet the needs of this population, we recommend STI prevention and testing service delivery models that incorporate STI testing outreach to oil/gas workers and condom distribution. Global, national and local STI control efforts should consider the realities and needs of similar subpopulations of young people.
We undertook this qualitative study to examine young people's understandings of the physical and ... more We undertook this qualitative study to examine young people's understandings of the physical and social landscape of the downtown drug scene in Vancouver, Canada. In-depth interviews were conducted with 38 young people ranging from 16 to 26 years of age. Using the concept of symbolic violence, we describe how one downtown neighborhood in particular powerfully symbolizes ‘risk’ among local youth, and how the idea of this neighborhood (and what happens when young people go there) informs experiences of marginalization in society's hierarchies. We also discuss the complex role played by social networks in transcending the geographical and conceptual boundaries between distinct downtown drug-using neighborhoods. Finally, we emphasize that young people's spatial tactics within this downtown landscape – the everyday movements they employ in order to maximize their safety – must be understood in the context of everyday violence and profound social suffering.
The objective of this study was to assess the association of sexually transmitted disease (STD)-r... more The objective of this study was to assess the association of sexually transmitted disease (STD)-related stigma on sexual health care behaviors, including Papanicolaou smears and STD testing/treatment, among women from a high-risk community. Descriptive statistics were used to assess the association of demographics, sexual and drug-related risk behaviors, and 3 measures of STD-stigma (internal, social, and tribal stigma, the latter referring to "tribes" of womanhood) with sexual health care in the past year. Pearson's chi-square test and Mann-Whitney test were used to assess significance. Multivariate logistic models were used to determine the association of STD-stigma with sexual health care after controlling for other factors. Lower internal stigma score was marginally associated with reporting an STD test in the past year [median score (interquartile range) for those reporting and not reporting an STD test were 0.79 (0.30-1.59) and 1.35 (0.67-1.93), respectively]. In an adjusted model, internal stigma retained a negative association with reporting of STD testing in the past year (adjusted odds ratio, 0.92; 95% confidence interval, 0.85-0.99). Most women had received a Papanicolaou smear in the past year, and none of the STD-stigma scales were associated with reporting this behavior. Internal stigma retained an association with not having any STD test or treatment. Although sexual stigma is a deeply rooted social construct, paying attention to how prevention messages and STD information are delivered may help remove one barrier to sexual health care.
The paper is based on an ethnographic study conducted in a rural community in British Columbia, C... more The paper is based on an ethnographic study conducted in a rural community in British Columbia, Canada. The study examined the impact of community culture on youth's development as sexual beings. We describe how social and geographical forces intersect to affect youth's lives and trace the ways in which deprivation of various forms of capital as well as social practices contribute to some youth being located in undesirable social positions. Our findings illustrate how the effects of stigmatisation, self-segregation, and other forms of symbolic violence can extend beyond health impacts and into the broader social realm.
Cutaneous malignant melanoma is a significant public health problem in Western countries, and the... more Cutaneous malignant melanoma is a significant public health problem in Western countries, and the probability that patients with one melanoma will develop a second one is high. This study is an attempt to assess and understand sun-related behavior in patients subsequent to a melanoma diagnosis. We recruited 35 melanoma patients diagnosed in 2001 or 2002, who resided in the Greater Vancouver Regional District of British Columbia, Canada, and 35 controls frequency matched by broad age-group, sex, ethnicity, and area of residence to patients. All participants were interviewed over the telephone in the autumn of 2003 to ascertain their outdoor activities for the previous summer months (June-August) of 2003, along with their clothing preferences, sunscreen use, sunburn frequency, and knowledge and attitudes regarding sun exposure and tanning. Patients were less involved in outdoor recreational activities than controls (mean monthly hours 23.0 vs. 31.0, P=0.023). In addition, patients protected themselves from sun exposure using clothing and sunscreen more often than controls. However, the data also revealed that patients still engaged in outdoor activities to a substantial degree, often without sun protection. Furthermore, 27% still had a positive or neutral attitude toward tanning, even after melanoma diagnosis. The continuing presence of unprotected episodes of summer sun exposure in patients with melanoma, coupled with sunburn prevalence similar to normal controls, suggests that better education and behavior modification programs are needed for patients with melanoma. The results may indicate the need for more emphasis on post-treatment counseling by physicians.
Northeastern British Columbia, Canada, is undergoing in-migration of young people attracted by jo... more Northeastern British Columbia, Canada, is undergoing in-migration of young people attracted by jobs in the oil/gas sectors. Chlamydia rates among youth ages 15–24 are increasing and exceed the provincial average by 22%. Testing for sexually transmitted infections (STIs) reduces the disease burden, contributing to prevention. We conducted ethnographic fieldwork, including interviews with 25 youth and 14 service providers, to document their perceptions regarding youth's access to STI testing. Five key barriers to access were identified: limited opportunities for access, geographic inaccessibility, local social norms, limited information, and negative interactions with providers. To address youths’ needs, we recommend active STI prevention and testing service delivery models that incorporate a locally tailored public awareness campaign, outreach to oil/gas workers, condom distribution, expanded clinic hours and drop-in STI testing, specialized training for health care providers, and inter-sectoral partnerships between public health, non-profit organizations, and industry.
The purpose of this study was to refine the Dimensions of Tobacco Dependence Scale (DTDS) – a mea... more The purpose of this study was to refine the Dimensions of Tobacco Dependence Scale (DTDS) – a measure of tobacco dependence for adolescents – by removing poorly discriminating items, testing the measurement structure of the remaining items and examining the predictive utility of the resulting scale in terms of its ability to explain the average number of cigarettes smoked per day (CPD). A total of 1425 current smokers (mean age 16 years) completed the questionnaire. Confirmatory factor analyses of the DTDS items supported a 4-factor model composed of social, emotional, nicotine and sensory related dimensions of tobacco dependence. Predictive utility and incremental validity of the DTDS was evident in the many sizable correlations between the DTDS and CPD as well as measures of self-rated addiction after controlling for scores on several other commonly used measures of nicotine dependence. The results indicate that the DTDS is a reliable and valid measure of tobacco dependence for adolescents that has the potential to enhance our understanding of the complex processes driving the emergence of tobacco dependence and cigarette smoking.
... have attempted to integrate both socialism and liberalism within the framework of the ... or ... more ... have attempted to integrate both socialism and liberalism within the framework of the ... or other public venues, the emergence of neo-conservative positions regarding sexuality in general ... as peer educators ultimately filled much of the allocated time for sexual education in school ...
Perspectives on Sexual and Reproductive Health, Jan 1, 2007
CONTEXT: Despite advances related to the provision of emergency contraception in Canada, particul... more CONTEXT: Despite advances related to the provision of emergency contraception in Canada, particularly the granting of independent prescriptive authority to pharmacists in 2000, little is known about the ways in which women perceive potential barriers to using it.METHODS: In 2004, an ethnically diverse sample of 52 women living in Greater Vancouver participated in interviews that were analyzed for an assessment of women’s knowledge, attitudes and experiences related to emergency contraception, with particular attention to the ways in which ethnicity affected their stories.RESULTS: Participants generally misperceived emergency contraception as an abortifacient, and often mistakenly thought that it has long-term effects on health and fertility. Knowledge gaps regarding reproductive physiology impeded clear understanding of when it is most effective. Participants also reported receiving subtle and sometimes overtly stigmatizing messages from providers when they sought emergency contraception. Asian and South Asian women were particularly concerned about negative interactions with providers; for example, they feared that female providers from their sociocultural community might recognize, chastise or gossip about them. Institutional policies (e.g., a Catholic hospital’s refusal to provide the method), coupled with low awareness of pharmacists’ prescriptive authority, also created barriers to use.CONCLUSIONS: Women’s ability to benefit from emergency contraception is hampered by lack of knowledge and conservative cultural or social mores. Serious contextual and structural shifts are required before woman-centered approaches to provision of the method become the norm.
Journal of The American Academy of Dermatology, Jan 1, 2005
In several studies, delays in malignant melanoma (MM) diagnosis have been correlated with increas... more In several studies, delays in malignant melanoma (MM) diagnosis have been correlated with increased tumor thickness, increased morbidity, and increased mortality.We sought to assess how MM is detected in British Columbia, Canada, and to understand the role of patient education and other factors on diagnostic delays.A self-administered questionnaire was distributed to 176 consecutive patients with histologically confirmed MM.The total median delay was 4 months. There was no correlation between tumor thickness and delay times. Lesions found incidentally by physicians were less invasive (median Breslow thickness 0.59 vs 1.0 mm, P = .006) than those found by patients. The majority of patients had some knowledge of MM and recognized the importance of early detection. Nearly one fourth of respondents were unaware MM could develop from a melanocytic nevus. In general, MM knowledge did not affect total delay.Patients in British Columbia, Canada, report relatively short delays in diagnosis of MM. Delays were not correlated with increased tumor thickness or with patient knowledge regarding melanoma before diagnosis.
International Journal of Behavioral Medicine, Jan 1, 2003
A grounded theory study was undertaken to describe how adolescents make decisions about sunbathin... more A grounded theory study was undertaken to describe how adolescents make decisions about sunbathing during the transition from childhood to adolescence and to propose an explanation for the relationships among factors affecting the adoption of sun tanning. In-depth interviews (n = 40) were conducted separately with adolescents (aged 12 to 16 years) and their parents. Constant comparative analysis of adolescents’ accounts identified two methods that adolescents described as a means of getting a suntan: intentional sun tanning and incidental sun tanning. The process of adolescents’ decision-making about getting a suntan can be understood by examining the following sequence: becoming motivated to get a tan, experimenting with sun tanning, and establishing self as an intentional tanner or incidental tanner. Implications for developing strategies to prevent the adoption of sun-tanning habits among adolescents are presented.
The role that environmental factors play in driving HIV and STI transmission risk among street-in... more The role that environmental factors play in driving HIV and STI transmission risk among street-involved youth has not been well examined. We examined factors associated with number of sex partners using quasi-Poisson regression and consistent condom use using logistic regression among participants enroled in the At Risk Youth Study (ARYS). Among 529 participants, 253 (47.8%) reported multiple partners while only 127 (24.0%) reported consistent condom use in the past 6 months. Homelessness was inversely associated with consistent condom use (adjusted odds ratio [aOR]=0.47, p=0.008), while unstable housing was positively associated with greater numbers of sex partners (adjusted incidence rate ratio [aIRR]=1.44, p=0.010). These findings indicate the need for interventions which modify environmental factors that drive risk among young street-involved populations.
We investigated the relationship between environmental-structural factors and condom-use negotiat... more We investigated the relationship between environmental-structural factors and condom-use negotiation with clients among female sex workers. We used baseline data from a 2006 Vancouver, British Columbia, community-based cohort of female sex workers, to map the clustering of "hot spots" for being pressured into unprotected sexual intercourse by a client and assess sexual HIV risk. We used multivariate logistic modeling to estimate the relationship between environmental-structural factors and being pressured by a client into unprotected sexual intercourse. In multivariate analyses, being pressured into having unprotected sexual intercourse was independently associated with having an individual zoning restriction (odds ratio [OR] = 3.39; 95% confidence interval [CI] = 1.00, 9.36), working away from main streets because of policing (OR = 3.01; 95% CI = 1.39, 7.44), borrowing a used crack pipe (OR = 2.51; 95% CI = 1.06, 2.49), client-perpetrated violence (OR = 2.08; 95% CI = 1.06, 4.49), and servicing clients in cars or in public spaces (OR = 2.00; 95% CI = 1.65, 5.73). Given growing global concern surrounding the failings of prohibitive sex-work legislation on sex workers' health and safety, there is urgent need for environmental-structural HIV-prevention efforts that facilitate sex workers' ability to negotiate condom use in safer sex-work environments and criminalize abuse by clients and third parties.
The objective of this research was to develop a multidimensional measure of tobacco dependence, s... more The objective of this research was to develop a multidimensional measure of tobacco dependence, sensitive to signs of incipient dependence and relevant to adolescents. A cross-sectional survey was conducted of students attending randomly selected high schools in two regions of British Columbia, Canada. Of the 3280 adolescents who completed the survey, 17% (n=562) indicated that they had smoked at least once in the month preceding the survey and were classified as “smokers.” Ninety-one percent of the smokers (n=513) completed all or most of the items and comprised the sample for the analysis. The survey included a number of items related to smoking status and nicotine dependence, including the newly developed Dimensions of Tobacco-Dependence Scale (DTDS), a 54-item multidimensional measure of tobacco dependence. Exploratory factor analyses using MINRES was used to examine the dimensions of the DTDS. The measure was found to include four dimensions: social reinforcement, emotional reinforcement, sensory reinforcement, and physical reinforcement. All subscales had adequate reliability (Cronbach's α coefficients >.70).
Northeastern British Columbia, Canada, is undergoing rapid in-migration of young, primarily male,... more Northeastern British Columbia, Canada, is undergoing rapid in-migration of young, primarily male, workers in response to the "boom" in the oil/gas industries. Chlamydia rates in the region exceed the provincial average by 32% (294.6 cases per 100 000 persons compared with 213.3). Evidence indicates that sociocultural and structural determinants of young people's sexual health are key to consider in the design of interventions. To investigate how sociocultural and structural features related to the oil/gas boom are perceived to affect the sexual behaviour of youth in a Northeastern "boomtown". The study included ethnographic fieldwork (8 weeks) and in-depth interviews with 25 youth (ages 15-25 years) and 14 health/social service providers. Participants identified four main ways in which the sociocultural and structural conditions created by the boom affect sexual behaviours, fuelling the spread of sexually transmitted infections (STIs): mobility of oil/gas workers; binge partying; high levels of disposable income and gendered power dynamics. The sociocultural and structural conditions that are fostered by a resource-extraction boom appear to exacerbate sexual health inequalities among youths who live and work in these rapidly urbanising, remote locales. To meet the needs of this population, we recommend STI prevention and testing service delivery models that incorporate STI testing outreach to oil/gas workers and condom distribution. Global, national and local STI control efforts should consider the realities and needs of similar subpopulations of young people.
We undertook this qualitative study to examine young people's understandings of the physical and ... more We undertook this qualitative study to examine young people's understandings of the physical and social landscape of the downtown drug scene in Vancouver, Canada. In-depth interviews were conducted with 38 young people ranging from 16 to 26 years of age. Using the concept of symbolic violence, we describe how one downtown neighborhood in particular powerfully symbolizes ‘risk’ among local youth, and how the idea of this neighborhood (and what happens when young people go there) informs experiences of marginalization in society's hierarchies. We also discuss the complex role played by social networks in transcending the geographical and conceptual boundaries between distinct downtown drug-using neighborhoods. Finally, we emphasize that young people's spatial tactics within this downtown landscape – the everyday movements they employ in order to maximize their safety – must be understood in the context of everyday violence and profound social suffering.
The objective of this study was to assess the association of sexually transmitted disease (STD)-r... more The objective of this study was to assess the association of sexually transmitted disease (STD)-related stigma on sexual health care behaviors, including Papanicolaou smears and STD testing/treatment, among women from a high-risk community. Descriptive statistics were used to assess the association of demographics, sexual and drug-related risk behaviors, and 3 measures of STD-stigma (internal, social, and tribal stigma, the latter referring to "tribes" of womanhood) with sexual health care in the past year. Pearson's chi-square test and Mann-Whitney test were used to assess significance. Multivariate logistic models were used to determine the association of STD-stigma with sexual health care after controlling for other factors. Lower internal stigma score was marginally associated with reporting an STD test in the past year [median score (interquartile range) for those reporting and not reporting an STD test were 0.79 (0.30-1.59) and 1.35 (0.67-1.93), respectively]. In an adjusted model, internal stigma retained a negative association with reporting of STD testing in the past year (adjusted odds ratio, 0.92; 95% confidence interval, 0.85-0.99). Most women had received a Papanicolaou smear in the past year, and none of the STD-stigma scales were associated with reporting this behavior. Internal stigma retained an association with not having any STD test or treatment. Although sexual stigma is a deeply rooted social construct, paying attention to how prevention messages and STD information are delivered may help remove one barrier to sexual health care.
The paper is based on an ethnographic study conducted in a rural community in British Columbia, C... more The paper is based on an ethnographic study conducted in a rural community in British Columbia, Canada. The study examined the impact of community culture on youth's development as sexual beings. We describe how social and geographical forces intersect to affect youth's lives and trace the ways in which deprivation of various forms of capital as well as social practices contribute to some youth being located in undesirable social positions. Our findings illustrate how the effects of stigmatisation, self-segregation, and other forms of symbolic violence can extend beyond health impacts and into the broader social realm.
Cutaneous malignant melanoma is a significant public health problem in Western countries, and the... more Cutaneous malignant melanoma is a significant public health problem in Western countries, and the probability that patients with one melanoma will develop a second one is high. This study is an attempt to assess and understand sun-related behavior in patients subsequent to a melanoma diagnosis. We recruited 35 melanoma patients diagnosed in 2001 or 2002, who resided in the Greater Vancouver Regional District of British Columbia, Canada, and 35 controls frequency matched by broad age-group, sex, ethnicity, and area of residence to patients. All participants were interviewed over the telephone in the autumn of 2003 to ascertain their outdoor activities for the previous summer months (June-August) of 2003, along with their clothing preferences, sunscreen use, sunburn frequency, and knowledge and attitudes regarding sun exposure and tanning. Patients were less involved in outdoor recreational activities than controls (mean monthly hours 23.0 vs. 31.0, P=0.023). In addition, patients protected themselves from sun exposure using clothing and sunscreen more often than controls. However, the data also revealed that patients still engaged in outdoor activities to a substantial degree, often without sun protection. Furthermore, 27% still had a positive or neutral attitude toward tanning, even after melanoma diagnosis. The continuing presence of unprotected episodes of summer sun exposure in patients with melanoma, coupled with sunburn prevalence similar to normal controls, suggests that better education and behavior modification programs are needed for patients with melanoma. The results may indicate the need for more emphasis on post-treatment counseling by physicians.
Northeastern British Columbia, Canada, is undergoing in-migration of young people attracted by jo... more Northeastern British Columbia, Canada, is undergoing in-migration of young people attracted by jobs in the oil/gas sectors. Chlamydia rates among youth ages 15–24 are increasing and exceed the provincial average by 22%. Testing for sexually transmitted infections (STIs) reduces the disease burden, contributing to prevention. We conducted ethnographic fieldwork, including interviews with 25 youth and 14 service providers, to document their perceptions regarding youth's access to STI testing. Five key barriers to access were identified: limited opportunities for access, geographic inaccessibility, local social norms, limited information, and negative interactions with providers. To address youths’ needs, we recommend active STI prevention and testing service delivery models that incorporate a locally tailored public awareness campaign, outreach to oil/gas workers, condom distribution, expanded clinic hours and drop-in STI testing, specialized training for health care providers, and inter-sectoral partnerships between public health, non-profit organizations, and industry.
The purpose of this study was to refine the Dimensions of Tobacco Dependence Scale (DTDS) – a mea... more The purpose of this study was to refine the Dimensions of Tobacco Dependence Scale (DTDS) – a measure of tobacco dependence for adolescents – by removing poorly discriminating items, testing the measurement structure of the remaining items and examining the predictive utility of the resulting scale in terms of its ability to explain the average number of cigarettes smoked per day (CPD). A total of 1425 current smokers (mean age 16 years) completed the questionnaire. Confirmatory factor analyses of the DTDS items supported a 4-factor model composed of social, emotional, nicotine and sensory related dimensions of tobacco dependence. Predictive utility and incremental validity of the DTDS was evident in the many sizable correlations between the DTDS and CPD as well as measures of self-rated addiction after controlling for scores on several other commonly used measures of nicotine dependence. The results indicate that the DTDS is a reliable and valid measure of tobacco dependence for adolescents that has the potential to enhance our understanding of the complex processes driving the emergence of tobacco dependence and cigarette smoking.
... have attempted to integrate both socialism and liberalism within the framework of the ... or ... more ... have attempted to integrate both socialism and liberalism within the framework of the ... or other public venues, the emergence of neo-conservative positions regarding sexuality in general ... as peer educators ultimately filled much of the allocated time for sexual education in school ...
Perspectives on Sexual and Reproductive Health, Jan 1, 2007
CONTEXT: Despite advances related to the provision of emergency contraception in Canada, particul... more CONTEXT: Despite advances related to the provision of emergency contraception in Canada, particularly the granting of independent prescriptive authority to pharmacists in 2000, little is known about the ways in which women perceive potential barriers to using it.METHODS: In 2004, an ethnically diverse sample of 52 women living in Greater Vancouver participated in interviews that were analyzed for an assessment of women’s knowledge, attitudes and experiences related to emergency contraception, with particular attention to the ways in which ethnicity affected their stories.RESULTS: Participants generally misperceived emergency contraception as an abortifacient, and often mistakenly thought that it has long-term effects on health and fertility. Knowledge gaps regarding reproductive physiology impeded clear understanding of when it is most effective. Participants also reported receiving subtle and sometimes overtly stigmatizing messages from providers when they sought emergency contraception. Asian and South Asian women were particularly concerned about negative interactions with providers; for example, they feared that female providers from their sociocultural community might recognize, chastise or gossip about them. Institutional policies (e.g., a Catholic hospital’s refusal to provide the method), coupled with low awareness of pharmacists’ prescriptive authority, also created barriers to use.CONCLUSIONS: Women’s ability to benefit from emergency contraception is hampered by lack of knowledge and conservative cultural or social mores. Serious contextual and structural shifts are required before woman-centered approaches to provision of the method become the norm.
Journal of The American Academy of Dermatology, Jan 1, 2005
In several studies, delays in malignant melanoma (MM) diagnosis have been correlated with increas... more In several studies, delays in malignant melanoma (MM) diagnosis have been correlated with increased tumor thickness, increased morbidity, and increased mortality.We sought to assess how MM is detected in British Columbia, Canada, and to understand the role of patient education and other factors on diagnostic delays.A self-administered questionnaire was distributed to 176 consecutive patients with histologically confirmed MM.The total median delay was 4 months. There was no correlation between tumor thickness and delay times. Lesions found incidentally by physicians were less invasive (median Breslow thickness 0.59 vs 1.0 mm, P = .006) than those found by patients. The majority of patients had some knowledge of MM and recognized the importance of early detection. Nearly one fourth of respondents were unaware MM could develop from a melanocytic nevus. In general, MM knowledge did not affect total delay.Patients in British Columbia, Canada, report relatively short delays in diagnosis of MM. Delays were not correlated with increased tumor thickness or with patient knowledge regarding melanoma before diagnosis.
International Journal of Behavioral Medicine, Jan 1, 2003
A grounded theory study was undertaken to describe how adolescents make decisions about sunbathin... more A grounded theory study was undertaken to describe how adolescents make decisions about sunbathing during the transition from childhood to adolescence and to propose an explanation for the relationships among factors affecting the adoption of sun tanning. In-depth interviews (n = 40) were conducted separately with adolescents (aged 12 to 16 years) and their parents. Constant comparative analysis of adolescents’ accounts identified two methods that adolescents described as a means of getting a suntan: intentional sun tanning and incidental sun tanning. The process of adolescents’ decision-making about getting a suntan can be understood by examining the following sequence: becoming motivated to get a tan, experimenting with sun tanning, and establishing self as an intentional tanner or incidental tanner. Implications for developing strategies to prevent the adoption of sun-tanning habits among adolescents are presented.
The role that environmental factors play in driving HIV and STI transmission risk among street-in... more The role that environmental factors play in driving HIV and STI transmission risk among street-involved youth has not been well examined. We examined factors associated with number of sex partners using quasi-Poisson regression and consistent condom use using logistic regression among participants enroled in the At Risk Youth Study (ARYS). Among 529 participants, 253 (47.8%) reported multiple partners while only 127 (24.0%) reported consistent condom use in the past 6 months. Homelessness was inversely associated with consistent condom use (adjusted odds ratio [aOR]=0.47, p=0.008), while unstable housing was positively associated with greater numbers of sex partners (adjusted incidence rate ratio [aIRR]=1.44, p=0.010). These findings indicate the need for interventions which modify environmental factors that drive risk among young street-involved populations.
We investigated the relationship between environmental-structural factors and condom-use negotiat... more We investigated the relationship between environmental-structural factors and condom-use negotiation with clients among female sex workers. We used baseline data from a 2006 Vancouver, British Columbia, community-based cohort of female sex workers, to map the clustering of "hot spots" for being pressured into unprotected sexual intercourse by a client and assess sexual HIV risk. We used multivariate logistic modeling to estimate the relationship between environmental-structural factors and being pressured by a client into unprotected sexual intercourse. In multivariate analyses, being pressured into having unprotected sexual intercourse was independently associated with having an individual zoning restriction (odds ratio [OR] = 3.39; 95% confidence interval [CI] = 1.00, 9.36), working away from main streets because of policing (OR = 3.01; 95% CI = 1.39, 7.44), borrowing a used crack pipe (OR = 2.51; 95% CI = 1.06, 2.49), client-perpetrated violence (OR = 2.08; 95% CI = 1.06, 4.49), and servicing clients in cars or in public spaces (OR = 2.00; 95% CI = 1.65, 5.73). Given growing global concern surrounding the failings of prohibitive sex-work legislation on sex workers' health and safety, there is urgent need for environmental-structural HIV-prevention efforts that facilitate sex workers' ability to negotiate condom use in safer sex-work environments and criminalize abuse by clients and third parties.
The objective of this research was to develop a multidimensional measure of tobacco dependence, s... more The objective of this research was to develop a multidimensional measure of tobacco dependence, sensitive to signs of incipient dependence and relevant to adolescents. A cross-sectional survey was conducted of students attending randomly selected high schools in two regions of British Columbia, Canada. Of the 3280 adolescents who completed the survey, 17% (n=562) indicated that they had smoked at least once in the month preceding the survey and were classified as “smokers.” Ninety-one percent of the smokers (n=513) completed all or most of the items and comprised the sample for the analysis. The survey included a number of items related to smoking status and nicotine dependence, including the newly developed Dimensions of Tobacco-Dependence Scale (DTDS), a 54-item multidimensional measure of tobacco dependence. Exploratory factor analyses using MINRES was used to examine the dimensions of the DTDS. The measure was found to include four dimensions: social reinforcement, emotional reinforcement, sensory reinforcement, and physical reinforcement. All subscales had adequate reliability (Cronbach's α coefficients >.70).
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