Table 2. The cumulative relative risks (95% confidence interval) of cold and heat exposure on cardiovascular mortality based on lag days and educational levels.
| Variabels | Cold effect | Heat effect | |
|---|---|---|---|
| Lag days | Lag 0 | 1.01 (1.00–1.02) | 1.04 (1.03–1.05) |
| Lag 0–3 | 1.06 (1.05–1.08) | 1.10 (1.08–1.12) | |
| Lag 0–7 | 1.05 (1.03–1.07) | 1.14 (1.09–1.17) | |
| Lag 0–13 | 1.09 (1.07–1.10) | 1.11 (1.08–1.15) | |
| Lag 0–21 | 1.06 (1.05–1.07) | 1.12 (1.06–1.17) | |
| Lag 0–28 | 1.07 (1.05–1.08) | 1.13 (1.07–1.17) | |
| Educational levels | Low Educational Level | 1.035 (1.031–1.04) | 1.03 (1.02–1.04) |
| High Educational Level | 1.014 (1.011–1.02) | 1.011 (1.00–1.015) |