Table 4 Association between weather conditions and AKI
No. of patients | No. of events (%) | Model 1 | Model 2 | Model 3 | ||||
|---|---|---|---|---|---|---|---|---|
RR (95% CI) | p value for trend | RR (95% CI) | p value for trend | RR (95% CI) | p value for trend | |||
Humidity level (%) | ||||||||
- Q1: < 63.0 | 16,777 | 656 (4.5) | 1.00 (Reference) | < 0.001 | 1.00 (Reference) | 0.003 | 1.00 (Reference) | 0.064 |
- Q2: 63-68.2 | 15,643 | 711 (4.5) | 1.16 (1.05, 1.29) p = 0.005 | 1.17 (1.06, 1.30) p = 0.002 | 1.17 (1.05, 1.31) p = 0.006 | |||
- Q3: 68.2-72.8 | 16,497 | 774 (4.7) | 1.20 (1.08, 1.33) p < 0.001 | 1.20 (1.08, 1.32) p < 0.001 | 1.18 (1.03, 1.35) p = 0.016 | |||
- Q4: > 72.8 | 15,693 | 723 (4.6) | 1.18 (1.06, 1.31) p = 0.002 | 1.16 (1.05, 1.28) p = 0.004 | 1.15 (1.01, 1.32) p = 0.038 | |||
Air temperature (°C) | ||||||||
- Q1: < 12.1 | 16,476 | 787 (4.8) | 1.19 (1.07, 1.32) p = 0.002 | < 0.001 | 1.15 (1.04, 1.28) p = 0.008 | 0.009 | 1.03 (0.89, 1.19) p = 0.735 | 0.675 |
- Q2: 12.1-16.9 | 16,603 | 742 (4.5) | 1.11 (1.00, 1.24) p = 0.056 | 1.08 (0.98, 1.20) p = 0.136 | 0.99 (0.87, 1.13) p = 0.867 | |||
- Q3: 16.9-23.8 | 17,424 | 767 (4.4) | 1.09 (0.98, 1.22) p = 0.100 | 1.10 (0.99, 1.22) p = 0.081 | 1.01 (0.89, 1.14) p = 0.901 | |||
- Q4: > 23.8 | 14,107 | 568 (4.0) | 1.00 (Reference) | 1.00 (Reference) | 1.00 (Reference) | |||