Table 2:

Descriptive statistics of forced expiratory volume (FEV1) and wheeze in the Health Outcomes and Measures of the Environment (HOME) Study Children.

		FEV1 at 4- or 5-Year Visit				Wheeze**
						No		Yes
		N*	%	Mean	SD	N	%	N	%
Overall		273	100	67	21	123	44	158	56
Child sex	Girls	164	58	66	21	68	55	85	54
	Boys	113	42	69	22	55	45	73	46
Child race	Non-Hispanic White	185	69	70	22	77	63	101	69
	Non-Hispanic Black	73	23	59	20	35	28	39	25
	Others	19	7	71	17	11	9	11	7
Marital status	not married	69	22	59	19	35	28	45	28
	married	208	78	70	21	88	72	113	72
Mother’s age	18–25	48	16	61	19	23	19	33	21
	25–35	186	68	68	21	78	63	102	65
	>35	43	16	70	23	22	18	23	14
Maternal education	High school graduate or less	49	16	62	20	25	20	30	19
	Tech school or some college	70	25	65	23	28	23	45	28
	College graduate or above	158	59	69	21	70	57	83	53
Pre-pregnancy BMI	<25	137	51	68	22	60	50	83	54
	25–30	72	26	66	18	38	32	39	25
	>30	62	22	66	23	21	18	33	21
Household income	0–40K	87	28	60	20	42	34	56	35
	40–80K	109	40	69	21	44	36	60	38
	>80K	81	31	72	21	37	30	42	26
Breast milk fed	No	40	14	66	22	27	22	20	13
	Yes	237	86	67	21	96	78	137	87
Parity number	0	132	46	65	19	58	47	67	43
	1	85	32	69	22	39	32	56	35
	≥2	60	22	68	25	26	21	35	22
Maternal serum cotinine at birth	Unexposed (<0.015 ηg/ml)	127	49	70	20	47	41	64	44
	SHS (0.015–3.0 ηg/ml)	120	44	66	21	57	50	68	47
	Active (>3.0 ηg/ml)	20	7	60	24	10	9	14	10
Cord blood cotinine	Unexposed (<0.015 ηg/ml)	135	53	70	21	50	44	64	47
	SHS (0.015–3.0 ηg/ml)	111	41	66	21	56	50	61	44
	Active (>3.0 ηg/ml)	18	6	58	24	7	6	12	9
Wheeze	No	221	81	67	21
	Yes	53	19	66	22

^*N for FEV₁ at 4- or 5-Year Visit is no of repeats.

^**Wheeze for any one of the visits (every six months for the first five years, and at 6 and 8 years of age).