Constructing a socioeconomic status index for colorectal cancer screening evaluation

Abstract Objective To construct an individual socioeconomic status index (ISESI) with information available in the Population Information System of Region Valencia, Spain, and use it to analyse inequalities a colorectal cancer screening programme (CRCSP). Methods Cross-sectional study. The study population was composed men women aged between 50 69 who were invited participate most recently completed round Valencia CRCSP 2020, n = 1,150,684. A multiple correspondence analysis performed aggregate Segmented, Integrated Geographical Analysis Code from into ISESI. Data 2016 Health Survey used for validation. relationship participation ISESI analysed by logistic regression models. Results variables included nationality, employment status, disability, healthcare coverage, risk vulnerability family size. important categories determining highest being employed not at social vulnerability, unemployed lowest status. Index validation demonstrated internal external coherence measuring categorised quartile (Q) showed that Q4 (the status) less likely OR 0.769 (0.757-0.782) than Q1 status), opposite found Q2 1.368 (1.347-1.390) Q3 1.156 (1.137-1.175). Conclusions An constructed validated using data made possible evaluate screening. Key messages • Regional data. Individual allows systematically evaluates