Baseline data and at re-examination after five and 10 years of follow up in the Finnish, Italian, and Dutch participants of the Seven Countries Study
| Finland | Italy | Netherlands | |
|---|---|---|---|
| Examination 1 (baseline) | |||
| Year of examination | 1959 | 1960 | 1960 |
| Age range (years) | 40–59 | 40–59 | 40–59 |
| No. of men examined | 1677 | 1712 | 872 |
| Response rate | 98% | 99% | 80% |
| Data on diet (n) | – | – | – |
| Data on pulmonary function (n) | 1614 | 1646 | – |
| Examination 2 (5 year follow up) | |||
| Year of examination | 1964 | 1965 | 1965 |
| Age range (years) | 45–64 | 45–64 | 45–64 |
| No. of men examined | 1531 | 1548 | 778 |
| Response rate (% of survivors) | 97% | 95% | 93% |
| Data on diet (n) | – | 1539 | 721 |
| Data on pulmonary function (n) | 1491 | 1394 | 694 |
| Used in present analysis (n) | 1386 | 691 | |
| Examination 3 (10 year follow up) | |||
| Year of examination | 1969 | 1970 | 1970 |
| Age range (years) | 50–69 | 50–69 | 50–69 |
| No. of men examined | 1363 | 1335 | 701 |
| Response rate (% of survivors) | 95% | 88% | 91% |
| Data on diet (n) | 1306 | 5921-150 | 615 |
| Data on pulmonary function (n) | 1325 | 1069 | – |
| Used in present analysis (n) | 1248 | ||
– = data not available.
↵1-150 Only measured in Crevalcore.