Table 1 Summary of hospitalizations for CKD and daily mean temperature in 261 Chinese cities during the hot season from 2015 to 2018, grouped by three major temperature zones
Variable | Overall | Temperate zone | Warm-temperate zone | Sub-tropical zonea |
|---|---|---|---|---|
Total [n (%)] | 768,129 (100.00) | 53,065 (6.91) | 174,080 (22.66) | 526,363 (68.53) |
Age group [n (%)] | Â | Â | Â | Â |
 18–40 years | 160,086 (20.84) | 10,222 (19.26) | 39,526 (22.71) | 107,308 (20.39) |
 40–60 years | 315,574 (41.08) | 21,810 (41.10) | 69,788 (40.09) | 217,707 (41.36) |
  ≥ 60 years | 292,469 (38.08) | 21,033 (39.64) | 64,766 (37.20) | 201,348 (38.25) |
Sex [n (%)] | Â | Â | Â | Â |
 Male | 438,318 (57.06) | 29,502 (55.60) | 99,021 (56.88) | 301,281 (57.24) |
 Female | 329,811 (42.94) | 23,563 (44.40) | 75,059 (43.12) | 225,082 (42.76) |
Etiology [n (%)]b | Â | Â | Â | Â |
 Diabetic kidney disease | 104,893 (13.66) | 9183 (17.31) | 28,447 (16.34) | 64,958 (12.34) |
 Hypertensive nephropathy | 96,345 (12.54) | 7431 (14.00) | 19,496 (11.20) | 68,256 (12.97) |
 Glomerulonephritis | 192,720 (25.09) | 16,057 (30.26) | 55,657 (31.97) | 117,531 (22.33) |
 Obstructive nephropathy | 165,212 (21.51) | 4869 (9.18) | 20,730 (11.91) | 137,039 (26.04) |
Daily hospitalizations (n, mean ± SD) | 6.02 ± 7.81 | 3.28 ± 4.22 | 5.16 ± 6.69 | 7.09 ± 8.74 |
Daily mean temperature (°C, mean ± SD) | 24.33 ± 3.74 | 20.66 ± 3.96 | 23.71 ± 3.51 | 25.46 ± 3.06 |
95th percentile of temperature (°C) | 29.64 | 26.18 | 28.97 | 30.00 |