Table 1 Summary statistics of weather conditions, air pollution, and daily mortality for four cities in China during 2008–2011
Variables | City | Mean (STDa) | Median (IQRb) | Min | Max |
|---|---|---|---|---|---|
Temperature (°C) | Wuhan | 17.15(9.55) | 18.1(16.1) | –2.7 | 35.3 |
Changsha | 18.27(9.35) | 19.2(16.2) | –3 | 35.5 | |
Guilin | 19.57(8.17) | 21.3(13.8) | –0.7 | 32.6 | |
Haikou | 23.90(4.76) | 25.4(6.7) | 8.7 | 31.6 | |
Relative humidity (%) | Wuhan | 73.84(12.96) | 75.0(17.0) | 21.0 | 100.0 |
Changsha | 72.95(13.06) | 74.0(19.0) | 28.0 | 96.0 | |
Guilin | 70.83(14.33) | 71.0(19.0) | 22.0 | 100.0 | |
Haikou | 80.54(8.01) | 81.0(10.0) | 47.0 | 98.0 | |
Air Pollution Index | Wuhan | 77.77(33.64) | 74.0(38.0) | 14.0 | 500.0 |
Changsha | 68.66(27.09) | 67.0(29.0) | 11.0 | 443.0 | |
Guilin | 51.77(19.44) | 51.0(26.0) | 15.0 | 179.0 | |
Haikou | 38.48(14.21) | 35.0(21.0) | 6.0 | 99.0 | |
Daily non-accidental deaths | Wuhan | 20.94(7.74) | 21.0(10.0) | 1.0 | 49.0 |
Changsha | 3.34(1.98) | 3.0(2.0) | 0.0 | 11.0 | |
Guilin | 1.16(1.13) | 1.0(2.0) | 0.0 | 6.0 | |
Haikou | 2.13(1.91) | 2.0(2.0) | 0.0 | 15.0 |