Distribution of participants in the four levels of occupational physical activity among men and women between 20 and 67 years of age without a history of cardiovascular disorders at the first examination (1976–1978) and the second examination (1981–1983) in the Copenhagen City Heart Study (n=7819)
| Sex | Men | Women | ||||||
| Occupational physical activity | Low (1981–1983) | Moderate (1981–1983) | High (1981–1983) | Very high (1981–1983) | Low (1981–1983) | Moderate (1981–1983) | High (1981–1983) | Very high (1981–1983) |
| Low (1976–1978) | 698 | 188 | 51 | 7 | 797 | 347 | 62 | 0 |
| Moderate (1976–1978) | 228 | 536 | 191 | 13 | 362 | 1304 | 352 | 2 |
| High (1976–1978) | 108 | 201 | 513 | 64 | 117 | 468 | 704 | 5 |
| Very high (1976–1978) | 58 | 67 | 146 | 212 | 0 | 5 | 11 | 2 |
Numbers in bold are those men and women who did not change their level of occupational physical activity from the first examination (1976–1978) to the second examination (1981–1983).