Table 3

Combined measure of occupational physical activity from 1976 to 1978 and from 1981 to 1983 as predictor for fatal and non-fatal myocardial infarction and all-cause mortality among men and women between 20 and 67 years of age without a history of cardiovascular disorders in the Copenhagen City Heart Study (n=7819)

Person-yearsNo. of cases (%)HR (95% CI)HR (95% CI)
Men
 Myocardial infarction
  Occupational physical activity
   Low (n=1114)19 941133 (12)1 (reference)1 (reference)
   Moderate (n=1152)19 828183 (16)1.34 (1.07 to 1.68)**1.30 (1.03 to 1.64)*
   High (n=1015)18 424145 (14)1.18 (0.93 to 1.50)1.20 (0.93 to 1.55)
 All-cause mortality
  Occupational physical activity
   Low (n=1114)21 108395 (35)1 (reference)1 (reference)
   Moderate (n=1152)21 136478 (41)1.17 (1.02 to 1.33)*1.15 (1.01 to 1.33)*
   High (n=1015)19 596435 (43)1.21 (1.05 to 1.38)**1.22 (1.05 to 1.41)**
Women
 Myocardial infarction
  Occupational physical activity
   Low (n=1506)27 40387 (6)1 (reference)1 (reference)
   Moderate (n=2303)41 944113 (5)0.82 (0.62 to 1.09)0.76 (0.56 to 1.02)
   High (n=729)15 25745 (6)1.10 (0.76 to 1.57)0.98 (0.67 to 1.44)
 All-cause mortality
  Occupational physical activity
   Low (n=1506)28 326439 (29)1 (reference)1 (reference)
   Moderate (n=2303)43 330619 (27)0.89 (0.79 to 1.01)0.88 (0.78 to 1.00)
   High (n=729)15 901194 (27)0.96 (0.81 to 1.14)0.95 (0.79 to 1.13)
  • *p≤0.05, **p≤0.01.

  • Control made for age.

  • Control made for age, smoking, alcohol, body mass index, leisure time physical activity, systolic blood pressure, diabetes, cholesterol, blood pressure medication and household income.