Table 2. Descriptive factors for Achilles tendon injury and ACL rupture.
| Achilles tendon injury | |||
| Cases (%) | Controls (%) | Total | |
| Overall | 5,148 (5.0%) | 97,831 (95.0%) | 102,979 |
| Ancestry Group | |||
| European | 4,258 (5.1%) | 79,006 (94.9%) | 83,264 |
| Latin-American | 413 (4.8%) | 8,147 (95.2%) | 8,560 |
| East Asian | 268 (3.6%) | 7,250 (96.4%) | 7,518 |
| African | 192 (6.1%) | 2,969 (93.9%) | 3,161 |
| South-East Asian | 17 (3.6%) | 459 (96.4%) | 476 |
| Sex | |||
| Female | 2,934 (4.9%) | 56,737 (95.1%) | 59,671 |
| Male | 2,211 (5.1%) | 41,031 (94.9%) | 43,242 |
| Unknown | 3 (4.5%) | 63 (95.5%) | 66 |
| Agea | 62.3 (62.2–62.4)b | 62.7 (62.6–62.8) | 62.6 (62.5–62.7) |
| ACL rupture | |||
| Cases (%) | Controls (%) | Total | |
| Overall | 598 (.61%) | 98,744 (99.39%) | 99,342 |
| Ancestry Group | |||
| European | 495 (.59%) | 82,769 (99.61%) | 83,264 |
| Latin-American | 54 (.63%) | 8,506 (99.37%) | 8,560 |
| East Asian | 49 (.65%) | 7,469 (99.35%) | 7,518 |
| Sex | |||
| Female | 349 (.61%) | 57,257 (99.39%) | 57,606 |
| Male | 249 (.59%) | 41,421 (99.41%) | 41,670 |
| Unknown | 0 (0%) | 66 (100%) | 66 |
| Agea | 52.0 (50.8–53.1)c | 62.7 (62.6–62.8) | 62.6 (62.5–62.7) |
a Mean age (years) at enrollment (95% CI).
bThere is a small difference in ages between cases and controls (p = 0.01).
c The difference in ages between the cases and controls is highly significant (p<10−100).