Table 7.

Domestic tobacco smoke exposure and pneumococcal colonization.

Domestic tobacco smoke exposure		S. pneumoniae positive		S. pneumoniae negative		All
		n	%	n	%	n	%
Visit
1	No	22	13.9	136	86.1	158	100
	Yes	12	16.2	62	83.8	74	100
2	No	48	31.8	103	68.2	151	100
	Yes	20	30.8	45	69.2	65	100
3	No	51	36.2	90	63.8	141	100
	Yes	19	31.7	41	68.3	60	100
4	No	52	47.3	58	52.7	110	100
	Yes	13	29.5	31	70.5	44	100