Table 2.

Multivariate analysis of significant factors in sleeping environment for risk of sudden infant syndrome

Variables*	Univariate		Multivariate
			Sleeping+		All factors++
	Odds ratio (95% CI)	p	Odds ratio (95% CI)	p	Odds ratio (95% CI)	p
Sleeping in a bassinet	8.95 [3.80; 21.05]	<0.001	6.54 [2.45; 17.42]	<0.001	4.22 [1.16; 15.38]	0.029
Substandard infant mattress for sleep**	3.09 [1.38; 6.89]	0.006	3.36 [1.27; 8.84]	0.014	2.25 [0.69; 7.34]	0.180
Waterproof cloth over the mattress	2.35 [1.11; 4.98]	0.025	3.83 [1.43; 10.25]	0.007	2.87 [0.81; 10.21]	0.103
≥4 togs during sleep	8.02 [3.55; 18.16]	<0.001	7.93 [3.16; 19.90]	<0.001	8.49 [2.38; 30.32]	0.001

*Variables are for routine practices.

**Includes pallet, twisted plaid, pillow

⁺ Controlled for all sleeping environment factors listed in table.

⁺⁺ Controlled for all factors that remained significant in the univariate analysis, including factors of sleeping environment.