Table 3.
Logistic regression analysis of surgery-related falls only
| Variable | Univariate analysis OR (95% CI) | P-value | Multivariate analysisa OR (95% CI) | P-value |
|---|---|---|---|---|
| Age/yrs | 1.05 (1.03–1.08) | <0.001 | 1.05 (1.02–1.08) | 0.001 |
| Females vs males | 1.34 (0.79–2.27) | 0.272 | – | – |
| BMI | 0.96 (0.91–1.01) | 0.115 | 0.97 (0.92–1.02) | 0.248 |
| THA vs TKA | 1.00 (0.61–1.66) | 0.993 | – | – |
| Use of walking aid | 2.18 (1.29–3.67) | 0.004 | 1.20 (0.67–2.16) | 0.544 |
| Social situationb | – | 0.001 | – | 0.033 |
| Living alone | 2.75 (1.64–4.61) | ,0.001 | 2.09 (1.20–3.62) | 0.009 |
| Nursing home, etc | 2.72 (0.36–20.51) | 0.331 | 1.48 (0.19–11.68) | 0.709 |
| Alcohol >2 units daily | 0.67 (0.21–2.15) | 0.499 | – | – |
| Diabetes | 1.96 (1.04–3.71) | 0.039 | 1.69 (0.87–3.29) | 0.122 |
| Pharmacologically treated CD | 0.93 (0.42–2.06) | 0.861 | – | – |
| Pharmacologically treated PD | 0.64 (0.20–2.05) | 0.449 | – | – |
| Pharmacologically treated PsD | 3.06 (1.58–5.95) | 0.001 | 2.80 (1.42–5.50) | 0.001 |
| LOS ≤4 days | 0.63 (0.30–1.33) | 0.223 | 1.19 (0.52–2.77) | 0.680 |
| Primary LOS/days | 1.02 (0.92–1.13) | 0.723 | – | – |
Notes:
a
Number of falls in the final model was 59, due to missing data
b
living with others as reference.
Abbreviations: BMI, body mass index; CD, cardiac disease; CI, confidence interval; LOS, length of hospital stay; OR, odds ratio; PD, pulmonary disease; PsD, psychiatric disease; THA, total hip arthroplasty; TKA, total knee arthroplasty; yrs, years.