Table 1 Cumulative incidence (%) of hospitalization due to knee injury by baseline characteristics
No hospitalization due to knee injury | Hospitalization due to meniscal lesion | Hospitalization due to other knee injury | ||||
|---|---|---|---|---|---|---|
N | N | % | N | % | ||
Age group | ||||||
30–39 years | 1638 | 131 | 7.2 | 46 | 2.5 | |
40–49 years | 1436 | 65 | 4.2 | 40 | 2.6 | |
50–59 years | 1301 | 28 | 2.1 | 28 | 2.1 | |
Gender | ||||||
Men | 2173 | 97 | 4.2 | 50 | 2.2 | |
Women | 2202 | 127 | 5.3 | 64 | 2.7 | |
Education | ||||||
<8 years | 2645 | 118 | 4.2 | 68 | 2.4 | |
8–12 years | 1097 | 68 | 5.7 | 29 | 2.4 | |
>12 years | 633 | 38 | 5.5 | 17 | 2.5 | |
Physical strenuousness of work | ||||||
Light | 1171 | 65 | 5.1 | 28 | 2.2 | |
Moderate | 1800 | 115 | 5.9 | 39 | 2.0 | |
Heavy | 979 | 35 | 3.4 | 29 | 2.8 | |
Not at work | 425 | 9 | 2.0 | 18 | 4.0 | |
BMI (kg/m2) | ||||||
< 25 | 2215 | 116 | 4.8 | 63 | 2.6 | |
25.0–29.9 | 1648 | 80 | 4.5 | 39 | 2.2 | |
≥ 30 | 512 | 28 | 5.1 | 12 | 2.2 | |
Leisure time physical exercise | ||||||
Little | 1362 | 58 | 4,0 | 25 | ||
Irregular | 2243 | 105 | 4,4 | 64 | ||
Regular | 770 | 61 | 7,1 | 25 | ||
Smoking | ||||||
Never- smoker | 2244 | 124 | 5.1 | 66 | 2.7 | |
Ex-smoker | 901 | 47 | 4.9 | 20 | 2.1 | |
Current smoker | 1230 | 53 | 4.0 | 28 | 2.1 | |
Alcohol intake (g/wk) | ||||||
0 | 1550 | 63 | 3.8 | 41 | 2.5 | |
1–49 | 2171 | 130 | 5.5 | 55 | 2.3 | |
≥ 50 | 649 | 31 | 4.4 | 18 | 2.6 | |