Résumé :
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ObjectiveCRC screening interventions tailored to the Expanded Health Belief Model (EHBM) socio-psychological factors have been developed, but the contributions of individual factors to screening outcomes are unclear.MethodsIn observational analyses of data from a randomized intervention trial, we examined the independent associations of five EHBM factors – CRC screening knowledge, self-efficacy, stage of readiness, barriers, and discussion with a provider – with objectively measured CRC screening after one year.ResultsWhen all five factors were added simultaneously to a base model including other patient and visit characteristics, three of the factors were associated with CRC screening: self-efficacy (OR = 1.32, p = 0.001), readiness (OR = 2.72, p < 0.001), and discussion of screening with a provider (OR = 1.59, p = 0.009). Knowledge and barriers were not independently associated with screening. Adding the five socio-psychological factors to the base model improved prediction of CRC screening (area under the curve) by 7.7%.ConclusionPatient CRC screening self-efficacy, readiness, and discussion with a provider each independently predicted subsequent screening.
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