Table 3. Increase in hospital admissions for respiratory, infectious and cardiovascular diseases as a function of changes in mean daily temperature, by sex and age, Hong Kong Special Administrative Region, China, 1998–2009.
Characteristic | Respiratory diseases |
Infectious diseases |
Cardiovascular diseases |
|||||
---|---|---|---|---|---|---|---|---|
Increasea (95% CI) | P | Increasea (95% CI) | P | Increasea (95% CI) | P | |||
Sex | ||||||||
Male | 4.1 (3.6 to 4.7) | < 0.0001 | 1.2 (0.5 to 2.0) | 0.0021 | 1.7 (1.1 to 2.3) | < 0.0001 | ||
Female | 4.7 (4.1 to 5.3) | < 0.0001 | 0.9 (0.2 to 1.6) | 0.0070 | 2.2 (1.6 to 2.7) | < 0.0001 | ||
Age (years) | ||||||||
< 15 | 5.0 (4.0 to 6.1) | < 0.0001 | 1.3 (0.3 to 2.3) | 0.015 | 1.1 (–0.4 to 2.5) | 0.14 | ||
15–59 | 2.2 (1.3 to 3.1) | < 0.0001 | 0.7 (0.0 to 1.5) | 0.055 | 0.2 (–0.6 to 1.0) | 0.60 | ||
60–74 | 3.7 (3.1 to 4.4) | < 0.0001 | 0.1 (–0.7 to 0.8) | 0.84 | 0.9 (0.3 to 1.6) | 0.0048 | ||
≥ 75 | 5.1 (4.6 to 5.6) | 0.0001 | 3.4 (2.4 to 4.4) | 0.0001 | 3.8 (3.3 to 4.4) | < 0.0001 |
CI, confidence interval.
a This represents the percentage increase in hospitalizations for every drop of 1 °C in mean temperature (lag 0–21) over the cooler temperature ranges (8.2–26.9 °C).