Table 1.

Comparison of variables related to neonatal, post natal and parental risk factors between SIDS and controls.

	Proportion (%) of:		Univariate odds ratio
	Cases	Controls	(95% CI)
Multiple birth	11/114 (10)	7/341 (2)	5.10 (1.76–15.13)
Prematurity (34–36 weeks)	9/114 (8)	11/341 (3)	2.57 (0.94–6.96)
Bottle feeding at birth	74/111 (67)	181/341 (53)	1.77 (1.10–2.85)
Usual prone sleeping position	50/114 (44)	31/341 (9)	7.81 (4.49–13.64)
Firm mattress	64/97 (66)	300/341 (88)	0.27 (0.15–0.47)
Recent illness (last 8 days)	45/114 (39)	62/341 (18)	2.93 (1.79–4.82)
Recent medication given (last 8 day)	35/112 (31)	73/336 (22)	1.64 (0.98–2.72)
Maternal smoking (cigarettes/day)
1–10	18/99 (19)	57/340 (17)	1.33 (0.69–2.55)
11–20	14/99 (15)	41/340 (12)	1.44 (0.69–2.98)
> 20	7/99 (7)	4/340 (1)	7.38 (1.83–31.63)
Both parents smokers	32/93 (34)	76/328 (23)	1.74 (1.02–2.96)
Family history of SIDS	11/114 (10)	21/341 (6)	1.63 (0.70–3.71)