Table 2

Comorbidity factors from five population surveys. Comorbidity factors for cumulative cause groups by age and sex. The comorbidity factor f is computed using equation (6) as the prevalence of persons reporting diseases in the two cause groups (p1+2) divided by the two prevalences p1 and p2 for each cause group considered independently: f = p1+2/(p1 × p2)



Males
Females




Survey
Combinations
< 30
30–44
45–59
60 –74
75+
< 30
30–44
45–59
60–74
75+

AUSNHS
Cardiovascular + respiratory
114.77
43.84
7.93
4.05
7.36
48.36
16.14
9.72
6.03
6.80

Previous + musculoskeletal
5.91
8.73
5.12
2.84
4.27
5.77
5.68
4.89
3.84
4.31

Previous + other
3.87
2.58
1.72
1.40
1.72
3.87
2.64
1.78
1.38
1.65

Previous + nervous
4.88
3.47
2.25
1.64
2.13
4.72
3.28
1.94
1.47
1.92

Previous + mental
2.93
2.01
1.43
1.20
1.45
2.87
1.98
1.47
1.25
1.43












AUS NMHS
Cardiovascular + respiratory
--
--
9.66
3.76
4.05
41.99
35.78
14.62
6.12
4.53

Previous + musculoskeletal
37.19
33.12
8.47
3.47
3.52
27.62
21.66
11.54
5.13
4.21

Previous + other
23.44
15.85
4.03
2.07
2.21
19.34
10.31
3.56
1.91
1.89

Previous + mental
4.76
4.83
2.29
1.44
1.73
4.25
3.93
2.09
1.37
1.46












US NHIS
Cardiovascular + respiratory
9.97
4.10
1.80
2.59
1.77
8.14
4.12
2.20
1.42
2.37

Previous + musculoskeletal
7.07
3.55
1.64
2.38
1.56
4.78
3.07
1.89
1.31
2.24

Previous + other
2.00
2.00
1.56
1.22
1.22
1.92
1.92
1.57
1.27
1.27

Previous + mental
1.84
1.84
1.46
1.15
1.15
1.65
1.65
1.39
1.17
1.17












Denmark
Cardiovascular + respiratory
32.71
32.71
14.05
6.04
6.04
41.56
41.56
15.63
5.87
5.87

Previous + musculoskeletal
13.49
13.49
5.76
2.46
2.46
14.38
14.38
7.43
3.84
3.84

Previous + other
4.15
4.15
2.61
1.64
1.64
4.35
4.35
2.66
1.63
1.63

Previous + nervous
4.08
4.08
2.63
1.69
1.69
4.46
4.46
2.73
1.67
1.67

Previous + mental
3.12
3.12
2.09
1.40
1.40
3.20
3.20
2.05
1.32
1.32












Belgium
Cardiovascular + respiratory
33.02
33.02
11.66
4.12
4.12
43.21
43.21
15.74
5.73
5.73

Previous + musculoskeletal
11.06
11.06
5.28
2.52
2.52
11.12
11.12
6.31
3.58
3.58

Previous + mental
5.90
5.90
3.27
1.81
1.81
5.72
5.72
3.48
2.12
2.12

Mathers et al. Population Health Metrics 2006 4:4   doi:10.1186/1478-7954-4-4