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Psychometric properties of brief indexes designed to measure social-cognitive predictors of smoking initiation.
Drug Alcohol Depend. 2007 Apr 17; 88(1):64-74.DA

Abstract

BACKGROUND

Constructing indexes which measure factors that may predict smoking initiation is essential for planning prevention programs. Our aim was to examine the criterion-related construct validity of brief psychological indexes of attitude, social influence and self-efficacy to be used in future studies for predicting smoking initiation in adolescents.

METHODS

Five indexes were evaluated using cross-sectional data on 4819 adolescents age 13 in a random sample of schools in six Danish counties. Item analyses were performed with the graphical log-linear Rasch model, a modification of the Rasch model that allows for differential item functioning and positive local dependence.

RESULTS

The three indexes social influence-norms, social influence-pressure and attitude showed acceptable deviations from the Rasch model, while the two indexes self-efficacy and social influence-behavior were invalidated by negative local dependence.

CONCLUSION

Of the five tested indexes, three (social influence-norms, social influence-pressure and attitude) showed acceptable criterion-related construct validity and may be considered unbiased representations of the theory-based factors if statistical analyses are appropriately adjusted. The results of this population-based study show that the graphical log-linear Rasch model is useful for evaluating health-related behavior indexes and identifying problems, which can be dealt with when using the indexes in future studies.

Authors+Show Affiliations

Department of Psychosocial Cancer Research, Institute of Cancer Epidemiology, Danish Cancer Society, Strandboulevarden 49, DK-2100 Copenhagen Ø, Denmark. pernille@cancer.dkNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17084994

Citation

Hansen, Pernille Envold, et al. "Psychometric Properties of Brief Indexes Designed to Measure Social-cognitive Predictors of Smoking Initiation." Drug and Alcohol Dependence, vol. 88, no. 1, 2007, pp. 64-74.
Hansen PE, Siersma V, Ross L, et al. Psychometric properties of brief indexes designed to measure social-cognitive predictors of smoking initiation. Drug Alcohol Depend. 2007;88(1):64-74.
Hansen, P. E., Siersma, V., Ross, L., Mortensen, E. L., Riegels, M., Tjørnhøj-Thomsen, T., & Johansen, C. (2007). Psychometric properties of brief indexes designed to measure social-cognitive predictors of smoking initiation. Drug and Alcohol Dependence, 88(1), 64-74.
Hansen PE, et al. Psychometric Properties of Brief Indexes Designed to Measure Social-cognitive Predictors of Smoking Initiation. Drug Alcohol Depend. 2007 Apr 17;88(1):64-74. PubMed PMID: 17084994.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Psychometric properties of brief indexes designed to measure social-cognitive predictors of smoking initiation. AU - Hansen,Pernille Envold, AU - Siersma,Volkert, AU - Ross,Lone, AU - Mortensen,Erik Lykke, AU - Riegels,Mette, AU - Tjørnhøj-Thomsen,Tine, AU - Johansen,Christoffer, Y1 - 2006/11/07/ PY - 2006/04/19/received PY - 2006/09/27/revised PY - 2006/09/27/accepted PY - 2006/11/7/pubmed PY - 2007/6/22/medline PY - 2006/11/7/entrez SP - 64 EP - 74 JF - Drug and alcohol dependence JO - Drug Alcohol Depend VL - 88 IS - 1 N2 - BACKGROUND: Constructing indexes which measure factors that may predict smoking initiation is essential for planning prevention programs. Our aim was to examine the criterion-related construct validity of brief psychological indexes of attitude, social influence and self-efficacy to be used in future studies for predicting smoking initiation in adolescents. METHODS: Five indexes were evaluated using cross-sectional data on 4819 adolescents age 13 in a random sample of schools in six Danish counties. Item analyses were performed with the graphical log-linear Rasch model, a modification of the Rasch model that allows for differential item functioning and positive local dependence. RESULTS: The three indexes social influence-norms, social influence-pressure and attitude showed acceptable deviations from the Rasch model, while the two indexes self-efficacy and social influence-behavior were invalidated by negative local dependence. CONCLUSION: Of the five tested indexes, three (social influence-norms, social influence-pressure and attitude) showed acceptable criterion-related construct validity and may be considered unbiased representations of the theory-based factors if statistical analyses are appropriately adjusted. The results of this population-based study show that the graphical log-linear Rasch model is useful for evaluating health-related behavior indexes and identifying problems, which can be dealt with when using the indexes in future studies. SN - 0376-8716 UR - https://www.unboundmedicine.com/medline/citation/17084994/Psychometric_properties_of_brief_indexes_designed_to_measure_social_cognitive_predictors_of_smoking_initiation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0376-8716(06)00359-0 DB - PRIME DP - Unbound Medicine ER -