Sample size, number of participants and participation rate by sex, study year, and area
| Area and year | Men | Women | ||||
|---|---|---|---|---|---|---|
| Sample size | Number of participants | Particpation rate (%) | Sample size | Number of participants | Participation rate (%) | |
| Eastern Finland | ||||||
| 1972 | 6714 | 5816 | 86.6 | 6721 | 6054 | 90.1 |
| 1977 | 6768 | 5898 | 87.2 | 6927 | 6257 | 90.3 |
| 1982 | 3853 | 3013 | 78.2 | 3587 | 3030 | 84.5 |
| 1987 | 2972 | 2354 | 79.2 | 2973 | 2546 | 85.6 |
| 1992 | 1978 | 1425 | 72.0 | 1985 | 1633 | 82.3 |
| South western Finland | ||||||
| 1982 | 1965 | 1602 | 81.5 | 1979 | 1702 | 86.0 |
| 1987 | 989 | 755 | 76.3 | 997 | 824 | 82.7 |
| 1992 | 994 | 749 | 75.4 | 995 | 832 | 83.6 |
| Southern Finland | ||||||
| 1992 | 993 | 675 | 68.0 | 982 | 737 | 75.1 |