Sally W. Vernon|Jasmin A. Tiro|Rachel W. Vojvodic|Sharon P. Coan|Pamela M. Diamond|Anthony J. Greisinger|María E. Fernández
Reliability and Validity of a Questionnaire to Measure Colorectal Cancer Screening Behaviors: Does Mode of Survey Administration Matter?
The University of Texas Health Science Center at Houston|The University of Texas Southwestern Medical Center|The University of Texas Health Science Center at Houston|The University of Texas Health Science Center at Houston|The University of Texas Health Science Center at Houston|Kelsey Research Foundation|The University of Texas Health Science Center at Houston
valid reliable selfreport measures cancer screening behaviors important evaluating efforts improve adherence guidelines evaluated testretest reliability validity selfreport fecal occult blood test fobt sigmoidoscopy sig colonoscopy col barium enema using national cancer institute colorectal cancer screening crcs questionnaire secondary objective evaluate reliability validity mail telephone facetoface survey administration modes consenting men women 51 74 years old receiving care multispecialty clinic least 5 years diagnosed colorectal cancer stratified prior crcs status randomized survey mode n 857 within survey mode respondents randomized complete second survey 2 weeks 3 months 6 months comparing selfreport administrative medical records concordance estimates 091 col 085 fobt 085 sig 092 overall sensitivity estimates 091 col 082 fobt 076 sig 056 specificity estimates 091 col 086 fobt 089 sig 097 sensitivity specificity varied little survey mode test reporttorecords ratio showed overreporting sig 11 col 115 fobt 157 underreporting 082 reliability time intervals highest col consistent pattern according survey mode study provides evidence support use national cancer institute crcs questionnaire assess selfreport three survey modes