Factorial validity and invariance of four psychosocial constructs of colorectal cancer screening: does screening experience matter?

ABSTRACT:

Background

Few studies have examined the psychometric properties and invariance of scales measuring constructs relevant to colorectal cancer screening (CRCS). We sought to: (i) evaluate the factorial validity of four core constructs associated with CRCS (benefits, barriers, self-efficacy, and optimism); and (ii) examine measurement invariance by screening status (currently screened, overdue, never screened).

Methods

We used baseline survey data from a longitudinal behavioral intervention trial to increase CRCS among U.S. veterans. Respondents were classified as currently screened (n = 3,498), overdue (n = 418), and never screened (n = 1,277). The measurement model was developed using a random half of the sample and then validated with the second half of the sample and the fu

SUBMITTER: Murphy CC 

PROVIDER: S-EPMC3858498 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature