Table 2.

Mean (95% empirical confidence interval) fraction of emergency department visits and deaths attributable to deviations from the minimum morbidity or mortality temperature in Rhode Island and Boston. Extreme and moderate cold and heat are defined using the 2.5^th and 97.5^th percentiles of location-specific mean temperature and the location-specific minimum morbidity or mortality temperature.

	Attributable Fraction (%)		Attributable Number (n/year)
	Emergency department visits	Deaths	Emergency department visits	Deaths
Rhode Island
Total	2.0% (0.8%, 3.3%)	12.1% (3.8%, 19.7%)	8981 (3382, 14557)	1138 (356, 1846)
Extreme cold a	0.1% (0.002%, 0.2%)	0.7% (0.3%, 1.1%)	445 (10, 863)	70 (30, 104)
Moderate cold b	0.8% (0.05%, 1.4%)	11.3% (3.4%, 18.4%)	3383 (220, 6320)	1059 (316, 1721)
Moderate heat c	0.9% (−0.2%, 2.0%)	0.03% (−0.2%, 0.3%)	4050 (−993, 8946)	3 (−21, 26)
Extreme heat d	0.2% (0.1%, 0.4%)	0.1% (−0.2%, 0.3%)	1103 (632, 1587)	6 (−21, 29)
Boston
Total	2.1% (−0.3%, 4.3%)	14.8% (6.0%, 22.4%)	12928 (−1660, 26557)	1646 (653, 2500)
Extreme cold a	0.002% (−0.3%, 0.3%)	0.8% (0.3%, 1.1%)	10 (−1694, 1601)	86 (39, 125)
Moderate cold b	0.7 (−0.4%, 1.8%)	14.0% (5.4%, 21.7%)	4222 (−2518, 10786)	1557 (604, 2425)
Moderate heat c	1.2 (−0.9%, 3.2%)	0.01% (−0.1%, 0.1%)	7288 (−5435, 19382)	1 (−12, 14)
Extreme heat d	0.2 (0.1%, 0.4%)	0.03% (−0.2%, 0.2%)	1408 (419, 2369)	3 (−22, 25)

^a< 2.5^th percentile of mean temperature

^b2.5^th percentile of mean temperature to the location-specific minimum morbidity or mortality temperature

^cLocation-specific minimum morbidity or mortality temperature to the 97.5^th percentile of mean temperature

^d< 97.5^th percentile of mean temperature