Table 3

 Relative risks of morbidity attributable to myocardial infarction by income, education, and occupational position (German study population, 2038 myocardial infarctions, controlled for sex) as estimated by means of Cox regression

Model 1Model 2 (mutually adjusted)
Relative risks95% CIRelative risks95% CI
Income (quintiles)
Income: highest 20% (reference category)11
Income: higher 20%1.201.03 to 1.411.150.98 to 1.35
Income: mean 20%1.581.32 to 1.881.481.24 to 1.76
Income: lower 20%1.581.29 to 1.931.431.17 to 1.75
Income: lowest 20%2.351.89 to 2.922.251.80 to 2.80
Not classified for income2.041.80 to 2.322.261.98 to 2.58
Occupational position
Intermediates/professionals (reference category)11
Skilled non-manuals1.791.14 to 2.831.360.85 to 2.19
Skilled manuals3.142.05 to 4.822.941.86 to 4.65
Unskilled/semi skilled3.562.33 to 5.453.242.05 to 5.14
Not classified for occupational position5.323.48 to 8.163.392.13 to 5.38
Education
University education (reference category)11
13 years of school with or without apprenticeship2.281.00 to 5.161.490.64 to 3.44
9 or 10 years of school and completed apprenticeship4.382.41 to 7.943.341.77 to 6.28
Max 10 years without having completed apprenticeship5.142.83 to 9.333.491.84 to 6.62
Not classified for education8.114.47 to 4.734.062.14 to 7.67