| Chronic conditions (ICD-9 code) | % | OR (95% CI)* (unadjusted) | OR (95% CI)* (age-adjusted) | REM index† (p value) |
| Cardiovascular diseases | ||||
| Diseases of valves (ICD-9: 394.0–397.1, 424, 746.3–746.6, 093.2) | 4.2 | 1.13 (0.77 to 1.65) | 1.15 (0.78 to 1.70) | 0.86 (0.445) |
| Hypertensive disease (ICD-9: 401–405) | 21.9 | 1.25 (1.12 to 1.39) | 1.27 (1.14 to 1.43) | 0.94 (0.331) |
| Previous acute myocardial infarction (ICD-9: 410, 412) | 5.7 | 1.24 (1.00 to 1.52) | 1.21 (0.97 to 1.51) | 0.90 (0.365) |
| Other ischaemic heart diseases (ICD-9: 411, 413–414) | 15.0 | 1.31 (1.19 to 1.49) | 1.34 (1.17 to 1.53) | 1.00 (0.997) |
| Diseases of pulmonary circulation (ICD-9: 415–417) | 2.3 | 1.06 (0.74 to 1.53) | 1.09 (0.70 to 1.70) | 0.81 (0.352) |
| Conduction disorders (ICD-9: 426) | 3.2 | 1.83 (1.36 to 2.46) | 1.67 (1.21 to 2.29) | 1.26 (0.164) |
| Cardiac dysrhythmias (ICD-9: 427) | 17.1 | 1.40 (1.24 to 1.58) | 1.41 (1.24 to 1.59) | 1.06 (0.386) |
| Heart failure (ICD-9: 428) | 13.2 | 1.25 (1.09 to 1.45) | 1.29 (1.11 to 1.49) | 0.96 (0.582) |
| Cerebrovascular diseases (ICD-9: 430–438) | 16.5 | 1.49 (1.32 to 1.68) | 1.50 (1.32 to 1.70) | 1.15 (0.063) |
| Diseases of arteries, arterioles, and capillaries (ICD-9: 440–448) | 7.9 | 1.40 (1.16 to 1.68) | 1.44 (1.19 to 1.75) | 1.08 (0.428) |
| Respiratory diseases | ||||
| Pneumonia (ICD-9: 480–486) | 7.4 | 1.34 (1.07 to 1.68) | 1.32 (1.09 to 1.60) | 0.99 (0.934) |
| Chronic pulmonary diseases (ICD-9: 490–505) | 15.0 | 1.23 (1.07 to 1.40) | 1.24 (1.08 to 1.42) | 0.92 (0.281) |
| Other diseases | ||||
| Malignant neoplasms (ICD-9: 140–208) | 26.3 | 1.14 (0.97 to 1.36) | 1.18 (1.03 to 1.36) | 0.85 (0.032) |
| Disorders of thyroid gland (ICD-9: 240–246) | 2.6 | 1.40 (1.02 to 1.94) | 1.39 (0.99 to 1.97) | 1.04 (0.808) |
| Diabetes mellitus (ICD-9: 250) | 13.2 | 1.41 (1.23 to 1.62) | 1.46 (1.25 to 1.70) | 1.10 (0.246) |
| Disorders of fluid, electrolyte, and acid-base balance (ICD-9: 276) | 2.0 | 1.13 (0.69 to 1.86) | 0.94 (0.63 to 1.41) | 0.70 (0.091) |
| Obesity and other hyperalimentation (ICD-9: 278) | 0.8 | 1.84 (1.02 to 3.31) | 2.18 (0.86 to 5.50) | 1.63 (0.300) |
| Anaemias (ICD-9: 280–285) | 10.6 | 1.25 (1.07 to 1.45) | 1.27 (1.09 to 1.48) | 0.94 (0.472) |
| Psychoses (ICD-9: 290–299) | 4.3 | 1.98 (1.43 to 2.74) | 2.05 (1.44 to 2.93) | 1.56 (0.016) |
| Depression (ICD-9: 300.4, 301.1, 309.0, 309.1, 311) | 1.1 | 0.99 (0.51 to 1.90) | 1.24 (0.47 to 3.25) | 0.92 (0.874) |
| Paralysis (ICD-9: 342–344) | 1.6 | 1.44 (0.97 to 2.13) | 1.49 (0.96 to 2.30) | 1.11 (0.636) |
| Other disorders of the central nervous system (ICD-9: 330–341, 345–349) | 5.5 | 1.61 (1.25 to 2.07) | 1.58 (1.24 to 2.03) | 1.20 (0.162) |
| Acute and chronic liver diseases (ICD-9: 570–572) | 5.1 | 1.22 (0.97 to 1.54) | 1.11 (0.79 to 1.57) | 0.83 (0.299) |
| Renal failure (ICD-9: 584–588) | 9.6 | 1.29 (1.10 to 1.52) | 1.33 (1.13 to 1.57) | 0.99 (0.955) |
| Diseases of the osteomuscular system (ICD-9: 710–739) | 6.1 | 1.32 (1.08 to 1.62) | 1.28 (1.03 to 1.59) | 0.96 (0.725) |
| Hip fracture (ICD-9: 820–821) | 3.4 | 1.70 (1.28 to 2.24) | 1.66 (1.23 to 2.25) | 1.25 (0.156) |
*Odds ratio (OR) and 95% confidence intervals (CI). Results in italics are from random effects models.
†REM, relative effect modification index is calculated as the ratio between the specific OR and the OR from the reference category (from the age-adjusted model).