This dataset was generated in a study aimed at creating an instrument to assess risk perception f... more This dataset was generated in a study aimed at creating an instrument to assess risk perception for tobacco products. This dataset includes item location statistics for PRI Health and Addiction Risk Items.
This dataset was generated in a study aimed at creating an instrument to assess risk perception f... more This dataset was generated in a study aimed at creating an instrument to assess risk perception for tobacco products. This dataset includes summary statistics of the demographics of participants in the Focus Groups, Cognitive Debriefing Interviews (CDIs, and Surveys.
OBJECTIVES The 14-item Oral Health Impact Profile (OHIP-14) is the most frequently used instrumen... more OBJECTIVES The 14-item Oral Health Impact Profile (OHIP-14) is the most frequently used instrument to measure oral health-related quality-of-life (OHRQoL) in adults. Despite its popularity, its psychometric properties have been predominantly investigated based on the classical test theory while the fundamental principles of measurement have not been fully assessed. Therefore, our aim was to investigate to what extent the OHIP-14 meets the fundamental requirments of measurements. METHODS We used the Rasch model to explore person-item-targeting, unidimensionality, local independence of items, invariance (differential-item-functioning, DIF), and the order of thresholds between response-options in the German version OHIP-14. We used data from osteoarthritis patients because hand disabilities and joint pain might influence oral hygiene. Furthermore, osteoarthritis in the temporomandibular-joint directly affects oral functioning. RESULTS Five-hundred sixteen patients were included (mean age 66.5 years [±10.2; ranging from 34 to 89]; 71.3% [368]females). The OHIP-14 median total score was 0 (interquartile-range from 0 to 4), indicating a right-skewed distribution because many patients reported good OHRQoL. The instrument was found unidimensional. However, there was strong evidence of local dependency, disordered thresholds between response-options, and age-related DIF for item 5. A revised scoring scheme with three instead of five answer-options in all items and eliminating two-items resolving local dependency, the newly adapted OHIP-12, showed better reliability and item-fit to the Rasch model than the original OHIP-14. CONCLUSIONS This study assesses, for the first time, the OHIP-14 in terms of fundamental principles of measurement and proposes an item-reduced OHIP-12 as a psychometrically more accurate version of the instrument. CLINICAL SIGNIFICANCE The Rasch model is essential to ensure instruments' precision and clinical meaningfulness when measuring OHRQoL in clinical practice and research. The OHIP-12, derived from the OHIP-14 by deleting two items due to local dependency, with a revised scoring scheme for all items distinguishing three answer-options instead of five, represents a psychometrically improved version of the instrument.
<jats:title>Abstract</jats:title> <jats:p>Measurement in the social sciences is... more <jats:title>Abstract</jats:title> <jats:p>Measurement in the social sciences is characterised by a multitude of incompatible paradigms, most of which fail to adhere to fundamental principles of measurement explicated in metrology. This has led to a fragmentation of instruments that are hard to interpret and lack a common reference. Rasch measurement theory, the metrological framework of the Rasch model, combined with strong substantive theories of the measurand, has the potential to advance measurement in the social sciences significantly. The Rasch model establishes a reference standard with a common unit of measurement against which different instruments can be calibrated ensuring traceability in social measurement. Uncertainty in the calibration process is addressed by a standard error of measurement for a specific estimate taking into account that precision varies over the continuum of the measurand. A strong substantive theory of the measurand allows for concrete predictions that can be tested empirically with positive evidence supporting accuracy. We exemplify the potential of the Rasch model by developing the ABOUT-Dependence, a new instrument for the measurement of dependence on tobacco- and nicotine-containing products (TNP). The instrument provides comparable measurements of dependence on different TNPs as well as dependence on multiple TNPs used concurrently. A co-calibration of the new instrument and existing, product-specific instruments allows for a conversion of scores of existing instruments into scores on the new instrument, and vice versa, via the established equal-unit reference scale. The score comparability adds to traceability in the measurement of dependence, is likely to facilitate the acceptance of the new instrument, and helps avoid a discontinuity in the research of dependence.</jats:p>
Wenn Unternehmen in neue Märkte eintreten, so bringt dies typischerweise eine zusätzliche Komplex... more Wenn Unternehmen in neue Märkte eintreten, so bringt dies typischerweise eine zusätzliche Komplexitätssteigerung mit sich, die sich aus landesspezifischen Ne-benbedingungen ergeben (Scheuch 1996). Diese Wissensdefizite werden unter an-derem durch ...
For a quarter of a century, measurement of latent constructs in marketing research has relied alm... more For a quarter of a century, measurement of latent constructs in marketing research has relied almost exclusively on Churchill's Paradigm for Better Measures. Item inter-correlations have been the touchstone of measurement. Recently, some contributions challenged these ...
This dataset was generated in a study aimed at creating an instrument to assess risk perception f... more This dataset was generated in a study aimed at creating an instrument to assess risk perception for tobacco products. This dataset includes item location statistics for PRI Health and Addiction Risk Items.
This dataset was generated in a study aimed at creating an instrument to assess risk perception f... more This dataset was generated in a study aimed at creating an instrument to assess risk perception for tobacco products. This dataset includes summary statistics of the demographics of participants in the Focus Groups, Cognitive Debriefing Interviews (CDIs, and Surveys.
OBJECTIVES The 14-item Oral Health Impact Profile (OHIP-14) is the most frequently used instrumen... more OBJECTIVES The 14-item Oral Health Impact Profile (OHIP-14) is the most frequently used instrument to measure oral health-related quality-of-life (OHRQoL) in adults. Despite its popularity, its psychometric properties have been predominantly investigated based on the classical test theory while the fundamental principles of measurement have not been fully assessed. Therefore, our aim was to investigate to what extent the OHIP-14 meets the fundamental requirments of measurements. METHODS We used the Rasch model to explore person-item-targeting, unidimensionality, local independence of items, invariance (differential-item-functioning, DIF), and the order of thresholds between response-options in the German version OHIP-14. We used data from osteoarthritis patients because hand disabilities and joint pain might influence oral hygiene. Furthermore, osteoarthritis in the temporomandibular-joint directly affects oral functioning. RESULTS Five-hundred sixteen patients were included (mean age 66.5 years [±10.2; ranging from 34 to 89]; 71.3% [368]females). The OHIP-14 median total score was 0 (interquartile-range from 0 to 4), indicating a right-skewed distribution because many patients reported good OHRQoL. The instrument was found unidimensional. However, there was strong evidence of local dependency, disordered thresholds between response-options, and age-related DIF for item 5. A revised scoring scheme with three instead of five answer-options in all items and eliminating two-items resolving local dependency, the newly adapted OHIP-12, showed better reliability and item-fit to the Rasch model than the original OHIP-14. CONCLUSIONS This study assesses, for the first time, the OHIP-14 in terms of fundamental principles of measurement and proposes an item-reduced OHIP-12 as a psychometrically more accurate version of the instrument. CLINICAL SIGNIFICANCE The Rasch model is essential to ensure instruments' precision and clinical meaningfulness when measuring OHRQoL in clinical practice and research. The OHIP-12, derived from the OHIP-14 by deleting two items due to local dependency, with a revised scoring scheme for all items distinguishing three answer-options instead of five, represents a psychometrically improved version of the instrument.
<jats:title>Abstract</jats:title> <jats:p>Measurement in the social sciences is... more <jats:title>Abstract</jats:title> <jats:p>Measurement in the social sciences is characterised by a multitude of incompatible paradigms, most of which fail to adhere to fundamental principles of measurement explicated in metrology. This has led to a fragmentation of instruments that are hard to interpret and lack a common reference. Rasch measurement theory, the metrological framework of the Rasch model, combined with strong substantive theories of the measurand, has the potential to advance measurement in the social sciences significantly. The Rasch model establishes a reference standard with a common unit of measurement against which different instruments can be calibrated ensuring traceability in social measurement. Uncertainty in the calibration process is addressed by a standard error of measurement for a specific estimate taking into account that precision varies over the continuum of the measurand. A strong substantive theory of the measurand allows for concrete predictions that can be tested empirically with positive evidence supporting accuracy. We exemplify the potential of the Rasch model by developing the ABOUT-Dependence, a new instrument for the measurement of dependence on tobacco- and nicotine-containing products (TNP). The instrument provides comparable measurements of dependence on different TNPs as well as dependence on multiple TNPs used concurrently. A co-calibration of the new instrument and existing, product-specific instruments allows for a conversion of scores of existing instruments into scores on the new instrument, and vice versa, via the established equal-unit reference scale. The score comparability adds to traceability in the measurement of dependence, is likely to facilitate the acceptance of the new instrument, and helps avoid a discontinuity in the research of dependence.</jats:p>
Wenn Unternehmen in neue Märkte eintreten, so bringt dies typischerweise eine zusätzliche Komplex... more Wenn Unternehmen in neue Märkte eintreten, so bringt dies typischerweise eine zusätzliche Komplexitätssteigerung mit sich, die sich aus landesspezifischen Ne-benbedingungen ergeben (Scheuch 1996). Diese Wissensdefizite werden unter an-derem durch ...
For a quarter of a century, measurement of latent constructs in marketing research has relied alm... more For a quarter of a century, measurement of latent constructs in marketing research has relied almost exclusively on Churchill's Paradigm for Better Measures. Item inter-correlations have been the touchstone of measurement. Recently, some contributions challenged these ...
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