Journal of Behavioral Health Services & Research, 2008
State and local mental health agencies have responsibility for the psychiatric care of Medicaid b... more State and local mental health agencies have responsibility for the psychiatric care of Medicaid beneficiaries and indigents meeting pre-defined criteria. A significant uninsured caseload may prove draining to agencies and hospitals mandated to provide emergency services, resulting in limited access. A spatial needs assessment was conducted to find areas having a greater relative proportion of indigent psychiatric hospitalizations. Robust descriptive and inferential spatial techniques were applied to California 1999–2003 public-use Zip-Code-level hospital discharge data to create maps. These maps reveal a more stable view of spatial variation in the proportion of indigent discharges compared to all psychiatric discharges. Synthetic estimation techniques were also applied to U.S. Census data to estimate the proportion of severe mental illness among households at less than 200% poverty level compared to estimated mental illness among all households. Visually comparing these maps suggests areas of potential mismatch. These results and methods may inform public decision-making.
The Southeast Asian journal of tropical medicine and public health, 2014
Although the individual contributions of smoked tobacco and indoor air pollution have been identi... more Although the individual contributions of smoked tobacco and indoor air pollution have been identified, there are very few studies that have characterized and measured the effects of inhaled particles from a wide range of personal, household, and community practices common in rural Asia. The objective of our study was to examine the association between environmental inhaled exposures and lung function among rural males of Lao PDR. In a sample of 92 males from rural Lao PDR, study subjects completed a survey on household exposures, a physical exam, and the following measures of lung function: FEV1, FVC, and the ratio of FEV1/FVC. Our findings were as follows: a) > 80% of the subjects were exposed to indoor cooking fires (wood fuel), animal handling, dust and dirt; b) 57.6% of subjects were in the impaired range (FEV1/FVC < 0.7); and c) animal handling was negatively associated (p < 0.03) with FEV1 and FVC. Among males in rural Lao PDR, we found a high prevalence of chronic ex...
ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses... more ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses? Comparing Ambient Ozone Expos... &lt; Previous Article | Next Article &gt; Epidemiology: November 2006 - Volume 17 - Issue 6 - p S110 ISEE/ISEA 2006 Conference Abstracts Supplement: Session Abstracts: Abstracts Zip Codes or Street Addresses? Comparing Ambient Ozone Exposures for Alternative Spatial Resolutions of Cohort Subjects Soret, S*; Ghamsary, M*; Shavlik, D*; Beeson, W L.*; Chen, L H.*; Wiafe, S*; Press, J†; Knutsen, S* Free Access Article Outline Author Information *School of Public Health, Loma Linda University, Loma Linda, CA; and †University of California, Riverside, CA SM5-PD-03 Back to Top | Article Outline Introduction: Accurate estimation of exposures is of the outmost importance for drawing valid inferences about the spatial relationship of risk factors with health outcomes of concern. In air pollution epidemiology, estimates are often derived from monitoring data. With GIS technology, we can map individuals to their street address rather than to a central location by zip code. Assuming the validity of the spatial interpolation method chosen and the representativeness of exposure data, an independent question remains: Does enhanced positional accuracy of subjects result in reduced exposure misclassification? We compared the estimated ozone exposures assigned to our cohort subjects when their locations are resolved alternatively by zip code centroids and by street addresses.
ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses... more ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses? Comparing Ambient Ozone Expos... &lt; Previous Article | Next Article &gt; Epidemiology: November 2006 - Volume 17 - Issue 6 - p S110 ISEE/ISEA 2006 Conference Abstracts Supplement: Session Abstracts: Abstracts Zip Codes or Street Addresses? Comparing Ambient Ozone Exposures for Alternative Spatial Resolutions of Cohort Subjects Soret, S*; Ghamsary, M*; Shavlik, D*; Beeson, W L.*; Chen, L H.*; Wiafe, S*; Press, J†; Knutsen, S* Free Access Article Outline Author Information *School of Public Health, Loma Linda University, Loma Linda, CA; and †University of California, Riverside, CA SM5-PD-03 Back to Top | Article Outline Introduction: Accurate estimation of exposures is of the outmost importance for drawing valid inferences about the spatial relationship of risk factors with health outcomes of concern. In air pollution epidemiology, estimates are often derived from monitoring data. With GIS technology, we can map individuals to their street address rather than to a central location by zip code. Assuming the validity of the spatial interpolation method chosen and the representativeness of exposure data, an independent question remains: Does enhanced positional accuracy of subjects result in reduced exposure misclassification? We compared the estimated ozone exposures assigned to our cohort subjects when their locations are resolved alternatively by zip code centroids and by street addresses.
Journal of Behavioral Health Services & Research, 2008
State and local mental health agencies have responsibility for the psychiatric care of Medicaid b... more State and local mental health agencies have responsibility for the psychiatric care of Medicaid beneficiaries and indigents meeting pre-defined criteria. A significant uninsured caseload may prove draining to agencies and hospitals mandated to provide emergency services, resulting in limited access. A spatial needs assessment was conducted to find areas having a greater relative proportion of indigent psychiatric hospitalizations. Robust descriptive and inferential spatial techniques were applied to California 1999–2003 public-use Zip-Code-level hospital discharge data to create maps. These maps reveal a more stable view of spatial variation in the proportion of indigent discharges compared to all psychiatric discharges. Synthetic estimation techniques were also applied to U.S. Census data to estimate the proportion of severe mental illness among households at less than 200% poverty level compared to estimated mental illness among all households. Visually comparing these maps suggests areas of potential mismatch. These results and methods may inform public decision-making.
The Southeast Asian journal of tropical medicine and public health, 2014
Although the individual contributions of smoked tobacco and indoor air pollution have been identi... more Although the individual contributions of smoked tobacco and indoor air pollution have been identified, there are very few studies that have characterized and measured the effects of inhaled particles from a wide range of personal, household, and community practices common in rural Asia. The objective of our study was to examine the association between environmental inhaled exposures and lung function among rural males of Lao PDR. In a sample of 92 males from rural Lao PDR, study subjects completed a survey on household exposures, a physical exam, and the following measures of lung function: FEV1, FVC, and the ratio of FEV1/FVC. Our findings were as follows: a) > 80% of the subjects were exposed to indoor cooking fires (wood fuel), animal handling, dust and dirt; b) 57.6% of subjects were in the impaired range (FEV1/FVC < 0.7); and c) animal handling was negatively associated (p < 0.03) with FEV1 and FVC. Among males in rural Lao PDR, we found a high prevalence of chronic ex...
ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses... more ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses? Comparing Ambient Ozone Expos... &lt; Previous Article | Next Article &gt; Epidemiology: November 2006 - Volume 17 - Issue 6 - p S110 ISEE/ISEA 2006 Conference Abstracts Supplement: Session Abstracts: Abstracts Zip Codes or Street Addresses? Comparing Ambient Ozone Exposures for Alternative Spatial Resolutions of Cohort Subjects Soret, S*; Ghamsary, M*; Shavlik, D*; Beeson, W L.*; Chen, L H.*; Wiafe, S*; Press, J†; Knutsen, S* Free Access Article Outline Author Information *School of Public Health, Loma Linda University, Loma Linda, CA; and †University of California, Riverside, CA SM5-PD-03 Back to Top | Article Outline Introduction: Accurate estimation of exposures is of the outmost importance for drawing valid inferences about the spatial relationship of risk factors with health outcomes of concern. In air pollution epidemiology, estimates are often derived from monitoring data. With GIS technology, we can map individuals to their street address rather than to a central location by zip code. Assuming the validity of the spatial interpolation method chosen and the representativeness of exposure data, an independent question remains: Does enhanced positional accuracy of subjects result in reduced exposure misclassification? We compared the estimated ozone exposures assigned to our cohort subjects when their locations are resolved alternatively by zip code centroids and by street addresses.
ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses... more ABSTRACT Home &gt; November 2006 - Volume 17 - Issue 6 &gt; Zip Codes or Street Addresses? Comparing Ambient Ozone Expos... &lt; Previous Article | Next Article &gt; Epidemiology: November 2006 - Volume 17 - Issue 6 - p S110 ISEE/ISEA 2006 Conference Abstracts Supplement: Session Abstracts: Abstracts Zip Codes or Street Addresses? Comparing Ambient Ozone Exposures for Alternative Spatial Resolutions of Cohort Subjects Soret, S*; Ghamsary, M*; Shavlik, D*; Beeson, W L.*; Chen, L H.*; Wiafe, S*; Press, J†; Knutsen, S* Free Access Article Outline Author Information *School of Public Health, Loma Linda University, Loma Linda, CA; and †University of California, Riverside, CA SM5-PD-03 Back to Top | Article Outline Introduction: Accurate estimation of exposures is of the outmost importance for drawing valid inferences about the spatial relationship of risk factors with health outcomes of concern. In air pollution epidemiology, estimates are often derived from monitoring data. With GIS technology, we can map individuals to their street address rather than to a central location by zip code. Assuming the validity of the spatial interpolation method chosen and the representativeness of exposure data, an independent question remains: Does enhanced positional accuracy of subjects result in reduced exposure misclassification? We compared the estimated ozone exposures assigned to our cohort subjects when their locations are resolved alternatively by zip code centroids and by street addresses.
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