Table 4

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 stratified on leisure time physical activity in 1981–1983 in the Copenhagen City Heart Study (n=7816)

Occupational physical activityPerson-yearsNo. of cases (%)HR (95% CI)HR (95% CI)
Men
 Myocardial infarction
  Low leisure time physical activity (n=447)Low (n=166)282525 (15)1 (reference)1 (reference)
Moderate (n=136)224825 (18)1.28 (0.74 to 2.23)1.39 (0.76 to 2.53)
High (n=145)238223 (16)1.15 (0.65 to 2.03)1.15 (0.62 to 2.13)
  Moderate leisure time physical activity (n=1468)Low (n=531)954459 (11)1 (reference)1 (reference)
Moderate (n=532)913182 (15)1.39 (1.00 to 1.95)1.27 (0.89 to 1.80)
High (n=405)725463 (16)1.43 (1.00 to 2.04)*1.41 (0.96 to 2.06)
  High leisure time physical activity (n=1364)Low (n=417)757249 (12)1 (reference)1 (reference)
Moderate (n=483)844275 (16)1.31 (0.92 to 1.88)1.27 (0.87 to 1.86)
High (n=464)876159 (13)1.00 (0.69 to 1.47)1.04 (0.69 to 1.55)
 All-cause mortality
  Low leisure time physical activity (n=447)Low (n=166)301274 (45)1 (reference)1 (reference)
Moderate (n=136)242273 (54)1.27 (0.92 to 1.75)1.15 (0.81 to 1.62)
High (n=145)254985 (59)1.48 (1.08 to 2.02)*1.56 (1.11 to 2.18)*
  Moderate leisure time physical activity (n=1468)Low (n=531)10 049185 (35)1 (reference)1 (reference)
Moderate (n=532)9702230 (43)1.24 (1.02 to 1.50)*1.28 (1.05 to 1.57)*
High (n=405)7794179 (44)1.29 (1.05 to 1.59)*1.31 (1.05 to 1.63)*
  High leisure time physical activity (n=1364)Low (n=417)8048136 (33)1 (reference)1 (reference)
Moderate (n=483)8997174 (36)1.08 (0.86 to 1.35)0.96 (0.76 to 1.22)
High (n=464)9226171 (37)1.06 (0.85 to 1.33)1.00 (0.78 to 1.26)
Women
 Myocardial infarction
  Low leisure time physical activity (n=637)Low (n=248)408517 (7)1 (reference)1 (reference)
Moderate (n=309)533518 (6)0.82 (0.42 to 1.59)1.03 (0.49 to 2.15)
High (n=80)15647 (9)1.13 (0.47 to 2.73)1.55 (0.55 to 4.35)
  Moderate leisure time physical activity (n=2568)Low (n=899)16 63258 (6)1 (reference)1 (reference)
Moderate (n=1317)24 38763 (5)0.72 (0.50 to 1.03)0.65 (0.45 to 0.95)*
High (n=352)742722 (6)1.01 (0.62 to 1.65)0.78 (0.46 to 1.33)
  High leisure time physical activity (n=1332)Low (n=358)667112 (3)1 (reference)1 (reference)
Moderate (n=677)12 22232 (5)1.38 (0.71 to 2.68)1.00 (0.49 to 2.01)
High (n=297)626616 (5)1.75 (0.82 to 3.70)1.18 (0.54 to 2.60)
 All-cause mortality
  Low leisure time physical activity (n=637)Low (n=248)424794 (38)1 (reference)1 (reference)
Moderate (n=309)5503106 (34)0.87 (0.66 to 1.14)0.89 (0.66 to 1.20)
High (n=80)161230 (38)0.91 (0.60 to 1.37)0.99 (0.63 to 1.54)
  Moderate leisure time physical activity (n=2568)Low (n=899)17 210259 (29)1 (reference)1 (reference)
Moderate (n=1317)25 221325 (25)0.83 (0.70 to 0.98)*0.80 (0.68 to 0.95)*
High (n=352)772690 (26)0.93 (0.73 to 1.18)0.92 (0.71 to 1.18)
  High leisure time physical activity (n=1332)Low (n=358)685386 (24)1 (reference)1 (reference)
Moderate (n=677)12 607188 (28)1.12 (0.87 to 1.45)1.06 (0.81 to 1.39)
High (n=297)656374 (25)1.18 (0.86 to 1.61)1.05 (0.76 to 1.45)
  • *p≤0.05.

  • Control made for age.

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