Table 3. Percentage increase of coronary heart disease mortality on heat wave days compared with non-heat wave days for 18 heat wave definitions in hot season (May–September) in Beijing, China during 2000–2011.
| Subgroup | Heat wave threshold | percentage increase (CIs) |
||
|---|---|---|---|---|
| (percentile of temperature) | Duration ≥ 2 days | Duration ≥ 3 days | Duration ≥ 4 days | |
| All CHD | 87.5th (28.3 °C) | 13.7 (5.7, 21.6) | 16.5 (7.7, 25.3) | 15.7 (6.1, 25.4) |
| 90.0th (28.7 °C) | 15.3 (6.4, 24.1) | 18.3 (8.5, 28.1) | 18.5 (7.1, 29.9) | |
| 92.5th (29.1 °C) | 18.1 (8.4, 27.8) | 18.3 (7.9, 28.7) | 16.2 (3.8, 28.7) | |
| 95.0th (29.6 °C) | 20.7 (9.5, 32.0) | 16.4 (3.2, 29.6) | 20.2 (5.2, 35.2) | |
| 97.5th (30.5 °C) | 31.0 (16.5, 45.6) | 23.2 (5.2, 41.2) | 21.0 (0.3, 41.7) | |
| 99.0th (31.3 °C) | 10.2 (-20.5, 40.9) | 22.9 (-9.6, 55.4) | 12.6 (-32.6, 57.7) | |
| Female | 87.5th (28.3 °C) | 16.0 (2.5, 29.5) | 21.8 (6.9, 36.6) | 26.7 (10.7, 42.7) |
| 90.0th (28.7 °C) | 15.4 (0.3, 30.5) | 21.9 (5.4, 38.4) | 24.3 (5.1, 43.4) | |
| 92.5th (29.1 °C) | 18.5 (2.0, 35.0) | 24.1 (6.7, 41.5) | 25.2 (4.5, 45.8) | |
| 95.0th (29.6 °C) | 20.7 (1.4, 40.0) | 18.0 (-4.6, 40.7) | 32.8 (7.9, 57.7) | |
| 97.5th (30.5 °C) | 37.3 (12.7, 61.8) | 30.9 (0.5, 61.3) | 28.1 (-7.1, 63.4) | |
| 99.0th (31.3 °C) | 25.7 (-22.0, 73.4) | 39.3 (-10.8, 89.3) | 45.9 (-18.7, 110.6) | |
| Male | 87.5th (28.3 °C) | 12.6 (3.2, 21.9) | 14.0 (3.6, 24.4) | 10.4 (-1.1, 21.9) |
| 90.0th (28.7 °C) | 15.2 (4.8, 25.6) | 16.6 (5.0, 28.1) | 15.7 (2.1, 29.2) | |
| 92.5th (29.1 °C) | 17.8 (6.4, 29.3) | 15.5 (3.2, 27.7) | 11.9 (-2.9, 26.7) | |
| 95.0th (29.6 °C) | 20.7 (7.5, 33.9) | 15.6 (0.1, 31.1) | 14.1 (-3.8, 32.0) | |
| 97.5th (30.5 °C) | 28.0 (10.8, 45.3) | 19.5 (-1.8, 40.8) | 17.6 (-6.7, 42.0) | |
| 99.0th (31.3 °C) | 1.5 (-36.5, 39.5) | 13.5 (-26.9, 53.9) | -8.8 (-68.1, 50.5) | |
| Age<65 | 87.5th (28.3 °C) | 11.8 (2.7, 20.8) | 13.8 (3.7, 23.9) | 14.8 (3.8, 25.7) |
| 90.0th (28.7 °C) | 10.8 (0.7, 21) | 12.2 (0.9, 23.4) | 13.0 (-0.2, 26.1) | |
| 92.5th (29.1 °C) | 12.2 (1.0, 23.4) | 11.3 (-0.7, 23.3) | 11.5 (-2.8, 25.8) | |
| 95.0th (29.6 °C) | 15.9 (2.9, 28.9) | 11.1 (-4.2, 26.3) | 15.2 (-2.2, 32.6) | |
| 97.5th (30.5 °C) | 25.9 (9.1, 42.8) | 26.6 (6.5, 46.8) | 29.0 (6.3, 51.7) | |
| 99.0th (31.3 °C) | 16.0 (-18.1, 50.1) | 29.5 (-6.4, 65.3) | 15.1 (-35.3, 65.6) | |
| Age≥65 | 87.5th (28.3 °C) | 18.4 (3.7, 33.1) | 23.2 (7.0, 39.5) | 18.1 (0.1, 36.2) |
| 90.0th (28.7 °C) | 26.4 (10.2, 42.5) | 33.4 (15.7, 51.1) | 32.2 (11.5, 52.8) | |
| 92.5th (29.1 °C) | 32.6 (15.0, 50.2) | 35.4 (16.8, 54) | 28.3 (5.7, 50.9) | |
| 95.0th (29.6 °C) | 32.6 (12.2, 52.9) | 29.4 (5.7, 53.0) | 32.5 (5.4, 59.5) | |
| 97.5th (30.5 °C) | 43.4 (17.2, 69.6) | 13.4 (-21.8, 48.6) | -3.5 (-46.8, 39.7) | |
| 99.0th (31.3 °C) | -6.2 (-67.5, 55.2) | 3.6 (-62.9, 70.1) | 5.5 (-83.3, 94.3) | |