Our study objective was to develop and validate a questionnaire assessing the knowledge, attitude, and practice (KAP) of family physicians regarding dementia care and dementia strategies in Canada. Using a multistage process with a panel of experts, we developed and distributed an 83-item questionnaire to 542 eligible family physicians in 42 interdisciplinary primary care teams participating in the Quebec Alzheimer Plan implementation. Altogether, 369 physicians (68%) returned questionnaires. Median item-specific non-response rate was 0.8 per cent (0.3%–8.1%). Exploratory factor analyses and scale correlation supported the questionnaire validity. The final questionnaire contained five factors and 31 items. The KAP questionnaire has proved to be a reliable instrument for assessing the KAP of family physicians regarding dementia care and dementia strategies. This questionnaire provides researchers, clinicians, managers, and decision-makers with a tool to assess an intervention, a program, or a policy change implemented in primary health care for patients with dementia.
