DOC questionnaire: measuring how GPs and medical specialists rate collaboration

Purpose - This paper aims to assess the validity of a questionnaire aimed at assessing how general practitioners (GPs) and specialists rate collaboration.Design methodology approach - Primary data were collected in The Netherlands during March to September 2006. A cross-sectional study was conducted among 259 GPs and 232 specialists. Participants were randomly selected from The Netherlands Medical Address Book. Specialists rarely contacting a GP were not invited to participate.Findings - Exploratory factor analysis indicated that the questionnaire, consisting of 20 items, measured five domains: organisation; communication; professional expertise; image; and knowing each other. Cronbach's alpha coefficients ranged from 0.64 to 0.83 indicating sufficient internal consistency. Correlation coefficients between domains were all