Rawl's questionnaire spanish validation for colorectal cancer screening with faecal occult blood testing.

INTRODUCTION

Colorectal cancer 5-years-survival is 57%, partway due to a low rate of participation in screening programmes. Instruments analyzing causes of low adherence are needed.

OBJECTIVE

To evaluate the validity and internal consistency of the Spanish version of Rawl's Questionnaire for the screening of colorectal cancer by faecal occult blood testing.

TYPE OF STUDY: Questionnaire validation methodology.

LOCATION: Three Primary Care Centres in Valencia.

VARIABLES: Age, sex, civil status, educational level, social class, smoking, alcohol consumption, body mass index, personal and family history of cancer.

RESULTS

We analyzed 408 individuals (237 cases and 171 controls). Mean age was 59.45 years (SD 5.17). Internal consistency of all variables reached a Cronbach's alfa of 0.796. The Cronbach's alfa benefit dimension of the screening was 0.871 and for the barrier dimension of the screening it was 0.817. Intraclass correlation coefficients of the test-retest for the benefit dimension of the screening was 0.809 (CI 95% 0.606-0.913) and 0.499 (CI 95% 0.126-0.750) for the barrier dimension.

CONCLUSION

The Spanish version of Rawl's Questionnaire is valid, reliable and reproducible, so we have this validated instrument with which to identify barriers and benefits in a colorectal screening programme in Spain.