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Table 1 Cumulative incidence (%) of hospitalization due to knee injury by baseline characteristics

From: Risk factors for first hospitalization due to meniscal lesions - a population-based cohort study with 30 years of follow-up

   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