Table 2. Possible risk factors for Sp carriage.

Features	Numberof children	CarriersN (%)	OR	95% CI	p-value
Siblings
0	469	88 (18.8)
1	429	129 (30.1)	1,86	1.36–2.54	0.01
> = 2	207	63 (30.4)	1,89	1.30–2.76	0.01
Day care attendance
No	794	150 (18.9)
Yes	311	130 (41.8)	3,08	2.31–4.11	0.01
Antibiotic consumption
None	507	121 (23.9)
7–30 days	101	19 (18.8)	0,74	0.43–1.27	0.27
>31 days	497	140 (28.2)	1,25	0.94–1.66	0.12
Passive smoke
No	557	141 (25.3)
Yes	548	139 (25.4)	1,00	0.76–1.32	0.98
History of breast feeding
No	345	92 (26.7)
Yes	760	188 (24.7)	0,90	0.68–1.21	0.50
History of pneumonia
No	1.083	272 (25.1)
Yes	22	8 (36.4)	1,70	0.71–4.11	0.20
History of acute otitis media
No	854	206 (24.1)
Yes	251	74 (29.5)	1,32	0.96–1.80	0.09
History of hospitalization
No	816	202 (24.8)
Yes	289	78 (27.0)	1,12	0.83–1.52	0.45
Presence of health provider at home
No	1.047	266 (25.4)
Yes	58	14 (24.1)	0,93	0.50–1.73	0.83