title: Development and evaluation of a new survey instrument to measure the quality of colorectal cancer screening decisions.
abstract: BACKGROUND
  Guidelines for colorectal cancer screening recommend that patients be informed about options and be able to select preferred method of screening; however, there are no existing measures available to assess whether this happens.
  
  
  METHODS
  Colorectal Cancer Screening Decision Quality Instrument (CRC-DQI) includes knowledge items and patients' goals and concerns. Items were generated through literature review and qualitative work with patients and providers. Hypotheses relating to the acceptability, feasibility, discriminant validity and retest reliability of the survey were examined using data from three studies: (1) 2X2 randomized study of participants recruited online, (2) cross-sectional sample of patients recruited in community health clinics, and (3) cross-sectional sample of providers recruited from American Medical Association Master file.
  
  
  RESULTS
  338 participants were recruited online, 94 participants were recruited from community health centers, and 115 physicians were recruited. The CRC-DQI was feasible and acceptable with low missing data and high response rates for both online and paper-based administrations. The knowledge score was able to discriminate between those who had seen a decision aid or not (84% vs. 64%, p < 0.001) and between providers, online patients and clinic patients (89% vs. 74% vs. 41%, p < 0.001 for all comparisons). The knowledge score and most of the goals had adequate retest reliability. About half of the participants received a test that matched their goals (47% and 51% in online and clinic samples respectively). Many respondents who had never been screened had goals that indicated a preference for colonoscopy. A minority of respondents in the online (21%) and in clinic (2%) samples were both well informed and received a test that matched their goals.
  
  
  CONCLUSIONS
  The CRC-DQI demonstrated good psychometric properties in diverse samples, and across different modes of administration. Few respondents made high quality decisions about colon cancer screening.
authors.affiliation: Division of General Internal Medicine, Health Decision Sciences Center, Massachusetts General Hospital, 50 Staniford Street, 8th Floor, Boston, MA 02114, USA. ksepucha@partners.org.
authors.forename: Karen R
authors.initials: KR
authors.lastname: Sepucha
authors.forename: Sandra
authors.initials: S
authors.lastname: Feibelmann
authors.forename: Carol
authors.initials: C
authors.lastname: Cosenza
authors.forename: Carrie A
authors.initials: CA
authors.lastname: Levin
authors.forename: Michael
authors.initials: M
authors.lastname: Pignone
mesh_terms: D000328:Adult; D000368:Aged; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D003657:Decision Making; D055088:Early Detection of Cancer; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000295:instrumentation*; D011787:Quality of Health Care / Q000592:standards*; D011897:Random Allocation; D011795:Surveys and Questionnaires / Q000592:standards*