Characteristics of the 48 333 440 person-years of follow-up within the study cohort of 2 860 448 persons
| Characteristics | Force-years | ||||||||
| <5 | ≥5 to <10 | ≥10 to 30 | |||||||
| 28 798 257 person-years | 9 410 812 person-years | 10 124 371 person-years | |||||||
| % | Mean | SD | % | Mean | SD | % | Mean | SD | |
| Sex | |||||||||
| Male | 41.2 | 54.9 | 79.9 | ||||||
| Female | 58.8 | 45.1 | 20.1 | ||||||
| Age | 47.0 | 11.6 | 44.9 | 12.1 | 47.8 | 11.6 | |||
Mean force-years for men and women with force-years <5: 1.5 (SD 1.5) and 1.8 (SD 1.5).
Mean force-years for men and women with force-years ≥5 to <10: 7.5 (SD 1.5) and 7.2 (SD 1.6).
Mean force-years for men and women with force-years ≥10 to 30: 13.9 (SD 3.0) and 11.5 (SD 2.3).