Development and psychometric testing of a new instrument to measure factors influencing women’s breast cancer prevention behaviors (ASSISTS)

BMC Women's Health

Research Article

Koen Ponnet¹  Fereshteh Majlessi²  Maryam Khazaee-Pool³  Ali Gholami⁴  Tahereh Pashaei⁵  Ali Montazeri⁶ 

[1] Department of Communication Studies and Sociology, University of Antwerp, Antwerp, Belgium;Higher Institute for Family Sciences, Odisee, Brussels, Belgium;Antwerp Maritime Academy, Antwerp, Belgium;Department of Health Education and Promotion, School of Health, Tehran University of Medical Sciences, P.O. Box 15875-6951, Tehran, Iran;Department of Health Education and Promotion, School of Health, Zanjan University of Medical Sciences, Zanjan, Iran;Department of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran;Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran;Department of Public Health, School of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran;Mental Health Research Group, Health Metrics Research Center, Institute for Health Sciences Research, ACECR, Tehran, Iran;

关键词: Breast cancer;    Preventive behaviors;    Instrument;    Psychometrics;    ASSISTS;   

DOI  :  10.1186/s12905-016-0318-2

 received in 2015-07-01, accepted in 2016-07-09,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundBreast cancer preventive behaviors have an extreme effect on women’s health. Despite the benefits of preventive behaviors regarding breast cancer, they have not been implemented as routine care for healthy women. To assess this health issue, a reliable and valid scale is needed. The aim of the present study is to develop and examine the psychometric properties of a new scale, called the ASSISTS, in order to identify factors that affect women’s breast cancer prevention behaviors.MethodsA multi-phase instrument development method was performed to develop the questionnaire from February 2012 to September 2014. The item pool was generated based on secondary analyses of previous qualitative data. Then, content and face validity were applied to provide a pre-final version of the scale. The scale validation was conducted with a sample of women recruited from health centers affiliated with Tehran University of Medical Sciences. The construct validity (both exploratory and confirmatory), convergent validity, discriminate validity, internal consistency reliability and test-retest analysis of the questionnaire were tested.ResultsFifty-eight items were initially extracted from the secondary analysis of previous qualitative data. After content validity, this was reduced to 49 items. The exploratory factor analysis revealed seven factors (Attitude, supportive systems, self-efficacy, information seeking, stress management, stimulant and self-care) containing 33 items that jointly accounted for 60.62 % of the observed variance. The confirmatory factor analysis showed a model with appropriate fitness for the data. The Cronbach’s alpha coefficient for the subscales ranged from 0.68 to 0.85, and the Intraclass Correlation Coefficient (ICC) ranged from 0.71 to 0.98; which is well above the acceptable thresholds.ConclusionThe findings showed that the designed questionnaire was a valid and reliable instrument for assessing factors affecting women’s breast cancer prevention behaviors that can be used both in practice and in future studies.

【 授权许可】

CC BY   
© Khazaee-Pool et al. 2016