- 20-65 aged, general public, The Netherlands, 1968
- N = 1552
- Non Response:
- 34% refusal and unattainable.
- Authors's label
- Number of doctor's consults
- Our Classification
- Direct question on number of consults during the past three months: 0 / 1 / 2 / 3-4 / 5-10 / more than 10