Table 2.
Association of risk factors with hip infection, revision and death 3 months after total hip arthroplasty
| Risk factor | OR (95% CI) | ||
|---|---|---|---|
| Infection | Revision | Death | |
| Year of surgery | 1.1 (1.0 to 1.2) | 1.1 (1.0 to 1.2) | 1.0 (0.9 to 1.1) |
| Blood transfusion (n = 1425 [14.1%]) | 1.1 (0.6 to 2.1) | 0.9 (0.5 to 1.8) | 2.6 (1.3 to 5.3) |
| Diabetes with complications (n = 1504 [14.8%]) | 2.0 (1.2 to 3.3) | 1.1( 0.6 to 2.1) | 1.5 (0.6 to 3.5) |
| Diabetes without complications (n = 341 [3.4%]) | 0.3 (0.1 to 1.1) | 1.0 (0.3 to 2.7) | 0.5 (0.1 to 2.0) |
| Hypertension (n = 4766 [47.0%]) | 0.8 (0.5 to 1.3) | 1.2 (0.8 to 2.0) | 1.3 (0.7 to 2.6) |
| Myocardial infarction (n = 105 [1.0%]) | 0.8 (0.1 to 6.2) | 1.8 (0.4 to 8.1) | 7.9 (2.6 to 24.3) |
| Congestive heart failure (n = 246 [2.4%]) | 6.1 (2.8 to 13.5) | 1.3 (0.5 to 3.7) | 4.1 (1.7 to 10.0) |
| Ischemic heart disease (n = 1230 [12.1%]) | 0.8 (0.4 to 1.6) | 1.2 (0.7 to 2.3) | 1.2 (0.5 to 2.9) |
| Osteoporosis (n = 1139 [11.3%]) | 0.4 (0.2 to 1.0) | 1.0 (0.5 to 1.9) | 0.9 (0.3 to 2.4) |
| Peripheral vascular disease (n = 211 [2.1%]) | 1.9 (0.6 to 5.5) | 1.3 (0.5 to 3.9) | 0* |
| Cerebrovascular accident (n = 232 [2.3%]) | 0.9 (0.2 to 3.6) | 1.0 (0.3 to 3.2) | 2.3 (0.7 to 8.1) |
| Dementia (n = 84 [0.8%]) | 0.7 (0.1 to 5.8) | 1.4 (0.3 to 6.8) | 4.4 (1.1 to 17.5) |
| Chronic obstructive pulmonary disease (n = 1121 [11.0%]) | 1.1 (0.6 to 2.0) | 1.5 (0.9 to 2.7) | 1.8 (0.8 to 3.7) |
| Rheumatologic disease (n = 507 [5.0%]) | 1.4 (0.6 to 3.3) | 1.9 (0.9 to 4.0) | 1.5 (0.4 to 5.3) |
| Peptic ulcer (n = 113 [1.1%]) | 1.2 (0.2 to 8.6) | 0* | 1.2 (0.2 to 9.8) |
| Mild liver disease (n = 81 [0.8%]) | 1.3 (0.2 to 9.8) | 1.4 (0.2 to 10.8) | 2.7 (0.3 to 27.1) |
| Paraparesis/hemiparesis (n = 32 [0.3%]) | 2.6 (0.2 to 28.5) | 7.1 (1.5 to 32.7) | 3.4 (0.3 to 40.6) |
| Renal disease (n = 217 [2.1%]) | 2.4 (0.9 to 6.2) | 0.9 (0.3 to 3.0) | 1.4 (0.4 to 5.2) |
| Cancer (n = 828 [8.2%]) | 0.7 (0.3 to 1.7) | 0.9 (0.4 to 2.0) | 0.9 (0.3 to 2.5) |
| Moderate to severe liver disease (n = 12 [0.1%]) | 0* | 0* | 0* |
| Metastatic disease (n = 95 [0.9%]) | 1.2 (0.1 to 11.5) | 0.8 (0.1 to 7.3) | 34.4 (9.4 to 126.1) |
| Median household income | 1.0 (1.0 to 1.0) | 1.0 (1.0 to 1.0) | 1.0 (1.0 to 1.0) |
| Age 60–69 yr (n = 3208) | 1.5 (0.8 to 2.8) | 1.1 (0.6 to 2.2) | 4.0 (0.9 to 18.2) |
| Age 70–79 yr (n = 2987) | 1.4 (0.7 to 2.7) | 1.5 (0.8 to 2.9) | 3.7 (0.8 to 17.1) |
| Age ≥ 80 yr (n = 1206) | 1.7 (0.8 to 3.6) | 1.7 (0.8 to 3.6) | 9.3 (2.0 to 43.3) |
| Female sex (n = 5639) | 1.2 (0.8 to 1.9) | 0.9 (0.6 to 1.3) | 0.4 (0.2 to 0.8) |
| Centre B (n = 1116) | 1.4 (0.7 to 2.8) | 1.9 (0.9 to 3.7) | 2.4 (0.9 to 5.9) |
| Centre C (n = 1750) | 2.1 (1.2 to 3.6) | 2.6 (1.4 to 4.5) | 0.9 (0.3 to 2.4) |
| Centre D (n = 892) | 0.9 (0.4 to 2.3) | 1.2 (0.5 to 3.1) | 2.5 (0.8 to 7.6) |
| Centre E (n = 2019) | 1.1 (0.5 to 2.0) | 1.5 (0.8 to 2.8) | 1.5 (0.6 to 3.7) |
CI = confidence interval; OR = odds ratio.
*
The number of incidents was insufficient to calculate the odds ratio of corresponding complications.