Table 5.
Risk factors associated with SSI.
| Parameters | SSI | Non-SSI | p values | ||||
|---|---|---|---|---|---|---|---|
| N ∗ | N 1 ∗∗ | N 2 ∗∗∗ | Rate (%) | N | Rate (%) | ||
| Gender | 0.9285 | ||||||
| Males | 6 | 3 | 3 | 37.5 | 12 | 30 | |
| Females | 10 | 7 | 3 | 62.5 | 18 | 45 | |
| Age groups | 0.0011 | ||||||
| >65 years | 11 | 11 | 0 | 68.7 | 27 | 67.5 | |
| ≤65 years | 5 | 3 | 2 | 31.25 | 13 | 32.5 | |
| Perioperative factors | |||||||
| Type of intervention (cemented) | 11 | 9 | 2 | 68.75 | 15 | 37.5 | 0.4731 |
| Autologous blood transfusion | 4 | 3 | 1 | 25 | 5 | 12.5 | 0.8427 |
| Duration of intervention (>90 min) | 8 | 7 | 1 | 50 | 6 | 15 | 0.0063 |
| Hospitalisation days (>4 days) | 13 | 12 | 1 | 81.25 | 16 | 40 | 0.0033 |
| Chronic disease/comorbidities (total) | 0.855 | ||||||
| Coronary artery disease | 2 | 1 | 1 | 12.5 | 4 | 10 | 0.4984 |
| Diabetes mellitus | 3 | 3 | 0 | 18.75 | 10 | 25 | 0.2339 |
| Hypertension | 12 | 11 | 1 | 75 | 25 | 62.5 | 0.3306 |
| Thyroid gland disease | 6 | 5 | 1 | 37.5 | 13 | 32.5 | 0.0329 |
| Cancer | 2 | 1 | 1 | 12.5 | 3 | 7.5 | 0.5066 |
| Recurrent infections | 3 | 2 | 1 | 18.75 | 1 | 2.5 | 0.0345 < 0.05 |
| Renal disease | 1 | 1 | 0 | 6.25 | 4 | 10 | 0.1419 |
| Blood disease | 0 | 1 | 0 | 0 | 2 | 5 | 0.3667 |
| Smoking | 1 | 1 | 0 | 6.25 | 6 | 15 | 0.3754 |
∗ Total number of subjects. ∗∗Number of subjects treated with TKR. ∗∗∗Number of subjects treated with THR.