Participant characteristics
| Women | Men | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No | Community | No | Siblings | p | No | Community | No | Siblings | p | |
| Age (years), mean (SD) | (n = 1085) | 63.4 (9.5) | (n = 423) | 68.1 (8.6) | <0.001 | (n = 644) | 64.2 (9.3) | (n = 314) | 66.7 (8.1) | |
| With knee pain (%) | (n = 1085) | 58.2 | (n = 423) | 59.8 | 0.949 | (n = 644) | 57.3 | (n = 314) | 58.5 | 0.504 |
| BMI (kg/m2), mean (SD) | (n = 1082) | 26.8 (4.6) | (n = 416) | 27.6 (5.3) | 0.003 | (n = 641) | 26.9 (3.8) | (n = 308) | 26.9 (4.0) | |
| Smoking: | (n = 1061) | (n = 423) | (n = 632) | (n = 314) | ||||||
| Never smoked (%) | 54.2 | 52.7 | 0.607 | 29.3 | 28.0 | 0.704 | ||||
| Ex-smokers (%) | 33.0 | 15.4 | <0.001 | 54.9 | 14.6 | <0.001 | ||||
| Current smokers (%) | 12.8 | 31.9 | <0.001 | 15.8 | 57.3 | <0.001 | ||||
| With nodes (%) | (n = 556) | 42.1 | (n = 423) | 69.5 | <0.001 | (n = 297) | 25.6 | (n = 308) | 43.0 | <0.001 |
| Meniscectomy (%) | (n = 882) | 0.1 | (n = 423) | 1.9 | <0.001 | (n = 512) | 4.3 | (n = 314) | 8.3 | 0.018 |