Table 5. Percent increase in number of daily deaths related to coronary heart disease for each 1 °C increase in 2-day lagged diurnal temperature range, by control scheme.

Control scheme	Mean	95% CI
Before and after case
​ 7 days	1.64	0.83–2.44
​ 7 and 14 days	2.10	1.37–2.83
​ 7, 14, and 21 days	2.13	1.04–3.22
Before case only
​ 7 days	2.34	1.40–3.29
​ 7 and 14 days	2.44	1.63–3.25
​ 7, 14, and 21 days	3.21	2.23–4.19