Table 3. Occurrence of acute MI and All-Cause Mortality with an Interquartile Range (IQR) Change in Apparent Temperature.
| Cold Months a | Warm Months b | |||
|---|---|---|---|---|
| HR c | (95 % CI) | HR d | (95 % CI) | |
| Occurrence of acute MI | ||||
| Same day | 1.15 | (1.01–1.31) | 1.04 | (0.86–1.26) |
| 2 day average (Lag0 – Lag1) | 1.10 | (0.97–1.25) | 1.11 | (0.92–1.35) |
| 3 day average (Lag0 – Lag2) | 1.08 | (0.96–1.22) | 1.13 | (0.94–1.35) |
| 4 day average (Lag0 – Lag3) | 1.08 | (0.95–1.23) | 1.07 | (0.90–1.27) |
| 5 day average (Lag0 – Lag4) | 1.10 | (0.97–1.25) | 1.00 | (0.84–1.19) |
| 6 day average (Lag0 – Lag5) | 1.11 | (0.98–1.27) | 0.96 | (0.80–1.15) |
| All-Cause Mortality | ||||
| Same day | 0.93 | (0.80–1.10) | 0.92 | (0.71–1.20) |
| 2 day average (Lag0 – Lag1) | 1.00 | (0.85–1.17) | 0.88 | (0.67–1.16) |
| 3 day average (Lag0 – Lag2) | 1.03 | (0.88–1.20) | 0.88 | (0.68–1.13) |
| 4 day average (Lag0 – Lag3) | 1.07 | (0.92–1.25) | 0.85 | (0.66–1.08) |
| 5 day average (Lag0 – Lag4) | 1.12 | (0.95–1.32) | 0.84 | (0.66–1.07) |
| 6 day average (Lag0 – Lag5) | 1.16 | (0.98–1.37) | 0.88 | (0.68–1.12) |
a
January, February, March, November and December
b
April, May, June, July, August, September, October
c
Hazard Ratio for an IQR decrease in apparent temperature. The IQR for cold months was 6.6 °C. Models adjusted for day of week, PM2.5, and absolute humidity
d
Hazard Ratio for an IQR increase in apparent temperature. The IQR for warm months was 12.3 °C. Models adjusted for day of week, PM2.5, ozone, and absolute humidity