Table 3

OR (95% CI) for infants dying from SIDS classified by whether or not they shared a room with one or more adults and weekday or weekend and Sunday or the rest of the week

		Sharing room with adult		Cases		Controls	OR (95% CI)
		Sharing room with adult		Cases		Controls	Adjusted for time of death, season, and ethnic origin	Multivariate3-150
Weekend
No	No	153	578	1.00	1.00
No	Yes	95	534	0.41 (0.30 to 0.56)	0.21 (0.14 to 0.32)
Yes	No	70	232	1.14 (0.81 to 1.60)	1.10 (0.73 to 1.65)
Yes	Yes	70	213	0.74 0.51 to 1.07)	0.48 (0.30 to 0.77)
Sunday
No	No	188	695	1.00	1.00
No	Yes	126	651	0.43 (0.32 to 0.57)	0.22 (0.15 to 0.32)
Yes	No	35	114	1.10 (0.72 to 1.70)	0.89 (0.52 to 1.53)
Yes	Yes	39	96	0.92 (0.59 to 1.45)	0.59 (0.33 to 1.07)

↵3-150 Confounding factors: (a) demographic factors—socioeconomic status (occupation) marital status, school leaving age, and mother’s age at birth of infant; (b) pregnancy factors—antenatal class attended, month of pregnancy when mother started attending antenatal clinic, number of previous pregnancies, and mother’s age at first pregnancy; (c) infant factors—sex of infant, ethnicity, birth weight, and gestation; and (d) postneonatal factors—region, infant’s age at time of death/nominated time, season, sleeping position, maternal smoking, breast feeding, and infant sharing bed with another person.