. Author manuscript; available in PMC: 2015 Aug 23.

Published in final edited form as: Arch Pediatr Adolesc Med. 2010 Jan;164(1):71–77. doi: 10.1001/archpediatrics.2009.239

Table 3.

Cumulative Incidence and Proportion of Newborn Babies With Hypothermia Within the First Week of Life by Quintile of Minimum Ambient Temperature

Minimum Ambient Temperature, Quintile (Range)	Babies, No.	Hypothermia Cases, No. (%)	RR (98% CI)
1 (3.8°C–11.7°C)	4426	3245 (73.2)	4.03 (3.77–4.30)
2 (11.8°C–16.7°C)	4440	2357 (53.1)	2.92 (2.72–3.12)
3 (16.8°C–22.7°C)	4408	1606 (36.4)	2.00 (1.86–2.15)
4 (22.8°C–25.5°C)	4418	1156 (26.2)	1.44 (1.32–1.56)
5 (25.6°C–29.3°C)	4422	805 (18.2)	1 [Reference]

Abbreviation: CI, confidence interval; RR, risk ratio.