Psychological or social problems included in the study, coded with the International Classification of Primary Care (ICPC) system
| Type of psychological or social problems | ICPC code |
|---|---|
| Psychological symptoms | P01-P29, for example, P01—anxious feelings |
| Psychological disorders | P70-P99, for example, P74—anxiety disorder |
| Social problems | Z01-Z29, for example, Z12—relational problem with partner |