Table 2.

Cumulative relative risks and their 95% confidence intervals of cold and heat effects of low and high temperatures on CVD related hospitalizations over multiple lag days, with reference at −12 °C.

Lag	Extreme colda	Moderate coldb	Moderate heatc	Extreme heatd
0	0.92 (0.78–1.08)	0.96 (0.89–1.04)	1.01 (0.94–1.08)	0.93 (0.78–1.10)
0–3	0.93 (0.79–1.09)	0.95 (0.88–1.04)	0.96 (0.87–1.05)	0.93 (0.76–1.14)
0–7	0.80 (0.66–0.99)*	0.89 (0.80–0.99)*	0.96 (0.85–1.08)	0.94 (0.75–1.19)
0–14	0.69 (0.51–0.94)*	0.83 (0.71–0.97)*	0.98 (0.83–1.16)	0.94 (0.69–1.27)
0–21	0.72 (0.48–1.09)	0.84 (0.68–1.04)	0.96 (0.77–1.20)	0.92 (0.62–1.37)
0–30	0.86 (0.51–1.46)	0.91 (0.69–1.20)	0.93 (0.69–1.26)	0.91 (0.55–1.53)

*p < 0.05.

^aThe 2.5th percentile of temperature (−5 °C) relative to the 25th percentile of temperature (2 °C).

^bThe 10th percentile of temperature (−2 °C) relative to the 25th percentile of temperature (2 °C).

^cThe 90th percentile of temperature (24 °C) relative to the 75th percentile of temperature (20 °C).

^dThe 97.5th percentile of temperature (27 °C) relative to the 75th percentile of temperature (20 °C).