Table 1.

Overview of all measures used in this paper

Measure	Type of data collection
Dependent:
Workload
- Working hours weekly (objective)	GP diary 1 week
- Number of patient contacts weekly (objective)	Contact registration 1 year
- Satisfaction with the available time (subjective)	GP questionnaire
- Emotional exhaustion (subjective)	GP questionnaire
Independent:
GP's attention for mental health problems
- GP's role perception with respect to mental health problems	GP questionnaire
- % contacts with psychological or social diagnoses	Contact registration 1 year
GP, practice and patient characteristics
- Sex, age, years of establishment, personal list size	GP questionnaire
- Degree of urbanisation	GP questionnaire
- % of publicly insured, women, 65+, non-Western, unemployed and low educated patients	Patient registration