Table 4. Logistic regression analyses of factors associated with achilles tendon repair.
| Univariable | Multivariable 1 | Multivariable 2 | ||||
|---|---|---|---|---|---|---|
| Odds ratio (95% CI) | p value | Odds ratio (95% CI) | p value | Odds ratio (95% CI) | p value | |
| Median temperature, °C | 1.03 (1.02–1.04) | < .05 | - | - | 1.03 (1.02–1.04) | < .05 |
| Quantile of median temperature, °C | < .05 | - | - | |||
| Q1 (≤5.3) | ref | ref | - | - | ||
| Q2 (>5.3, ≤14.85) | 1.77 (1.4–2.23) | < .05 | 1.70 (1.31–2.21) | < .05 | - | - |
| Q3 (>14.85, ≤22) | 2.28 (1.81–2.86) | < .05 | 2.35 (1.82–3.03) | < .05 | - | - |
| Q4 (>22) | 2.03 (1.61–2.56) | < .05 | 2.14 (1.65–2.77) | < .05 | - | - |
| Male sex | 4.41 (3.71–5.24) | < .05 | 4.24 (3.52–5.11) | < .05 | 4.26 (3.54–5.14) | < .05 |
| Age | 0.95 (0.94–0.96) | < .05 | 0.95 (0.94–0.95) | < .05 | 0.95 (0.94–0.95) | < .05 |
| Income level (percentile) | < .05 | |||||
| Low (<30) | ref | ref | ref | |||
| Intermediate (30–70) | 1.34 (1.06–1.68) | 0.013 | 1.21 (0.94–1.55) | 0.135 | 1.22 (0.95–1.57) | 0.112 |
| High (≥70) | 1.84 (1.47–2.29) | < .05 | 1.97 (1.54–2.51) | < .05 | 1.99 (1.56–2.54) | < .05 |
| Regional latitude | ||||||
| High (37–38 degrees) | ref | - | - | - | - | |
| Low (33–36 degrees) | 1.01 (0.87–1.18) | 0.890 | - | - | - | - |
Boldface indicates statistical significance (p < .05), CI, confidence interval.