Objective: Health locus of control (HLC) is associated with health behaviours. We aimed to investigate the difference of HLC to understand the potential gap in health beliefs between physicians and the general public.
Design and setting: Physicians and the general public were surveyed in Japan using a cross-sectional survey. Data on the Japanese version of the HLC scale (HLCS-J) from 2194 members of the general public and 895 physicians were available.
Method: Multi-group structural equation modelling analysis was used for examining differential item functioning (DIF) in the HLCS-J between the groups.
Results: Uniform DIF was identified for the dimensions of internal, professional control and control by spiritual powers. Mean score for chance control (17.2) among physicians was greater than that (14.9) among the general public (adjusted p<0.001), while mean score for family control (21.7) among physicians was lower than that (22.1) among the general public (adjusted p<0.001).
Conclusion: Physicians are more likely to have a higher chance control but lower family control than the general public. Further studies are needed to evaluate the relationships between individual physicians’ HLC and their health behaviours.
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