Table 4. cumRR of AMI admissions during extreme temperatures and RRR between the DM and non-DM group in the hot season (May–October) in public hospitals of Hong Kong SAR in 2002–2011.
| DM | Non-DM | RRR (95% confidence interval) (DM versus non-DM) | p-value of RRR | |
|---|---|---|---|---|
| cumRR (95% confidence interval) | cumRR (95% confidence interval) | |||
| Hot season (May–October) lag 0–4 days | ||||
| 30.4 °C versus 28.8 °C | ||||
| All AMI | 1.14 (1.00–1.31) | 1.00 (0.91–1.10) | 1.14 (0.97–1.34) | 0.12 |
| <75 | 1.28 (1.06–1.55) | 0.96 (0.85–1.08) | 1.33 (1.07–1.67) | 0.01 |
| ≥75 | 1.03 (0.85–1.24) | 1.06 (0.92–1.21) | 0.97 (0.77–1.23) | 0.81 |
| Female | 1.16 (0.95–1.42) | 1.01 (0.86–1.18) | 1.15 (0.89–1.48) | 0.29 |
| Male | 1.13 (0.93–1.36) | 0.99 (0.89–1.11) | 1.14 (0.92–1.42) | 0.24 |
| First admission | 1.13 (0.96–1.34) | 0.98 (0.89–1.08) | 1.15 (0.95–1.40) | 0.15 |
| Recurrent | 1.15 (0.92–1.46) | 1.08 (0.89–1.32) | 1.07 (0.79–1.45) | 0.66 |
| 23.6 °C versus 28.8 °C | ||||
| All AMI | 1.22 (1.02–1.44) | 1.09 (0.97–1.22) | 1.12 (0.91–1.38) | 0.29 |
| <75 | 1.28 (1.00–1.65) | 1.05 (0.91–1.22) | 1.22 (0.91–1.63) | 0.18 |
| ≥75 | 1.18 (0.94–1.49) | 1.15 (0.98–1.36) | 1.03 (0.77–1.36) | 0.86 |
| Female | 1.40 (1.09–1.80) | 1.19 (0.98–1.45) | 1.18 (0.86–1.62) | 0.32 |
| Male | 1.07 (0.85–1.36) | 1.05 (0.92–1.20) | 1.02 (0.78–1.33) | 0.89 |
| First admission | 1.20 (0.97–1.47) | 1.23 (1.00–1.27) | 0.98 (0.77–1.24) | 0.84 |
| Recurrent | 1.23 (0.92–1.63) | 1.00 (0.79–1.27) | 1.23 (0.85–1.78) | 0.27 |
Abbreviations: AMI, acute myocardial infarction; cumRR, cumulative relative risk; DM, diabetes mellitus; RRR, relative risk ratio.