Table 1.

ACCESS Participant Characteristics

Categorical Variables	All (n=199)		Boys (n=106)		Girls (n=93)
	n	%	n	%	n	%
Maternal Race
Hispanic	129	64.8	67	63.2	62	66.7
African American	42	21.1	22	20.8	20	21.5
White/Other	28	14.1	17	16.0	11	11.8
Maternal education
>12 yrs	65	32.7	36	34.0	29	31.2
≤12 yrs	134	67.3	70	66.0	64	68.8
Child ever asthma*
No	164	82.4	77	72.6	87	93.6
Yes	35	17.6	29	27.4	6	6.5
Prenatal maternal smoking
No	170	85.4	90	84.9	80	86.0
Yes	29	14.6	16	15.1	13	14.0
Postnatal household tobacco smoke †
No	155	77.9	79	74.5	76	81.7
Yes	44	22.1	27	25.5	17	18.3
Continuous Variables
FEV1 (L; mean, SD)	1.44	0.25	1.46	0.23	1.42	0.26
FVC (L; mean, SD)	1.58	0.29	1.60	0.26	1.55	0.32
FEF25-75 (L/s; mean, SD)	1.87	0.46	1.83	0.47	1.91	0.44
FEV1/FVC ratio (mean, SD)	0.92	0.05	0.91	0.06	0.92	0.05
z-score of FEV1 (median, IQR) ‡	−0.09	−0.79–0.66	−0.13	−0.58–0.61	−0.08	−0.96–0.68
z-score of FVC (median, IQR) ‡	−0.12	−0.74–0.64	−0.02	−0.51–0.68	−0.15	−1.03–0.57
z-score of FEF25-75 (median, IQR) ‡	−0.12	−0.73–0.63	−0.31	−0.87–0.33	0.29	−0.62–0.96
z-score of FEV1/FVC ratio (median, IQR) ‡	0.02	−0.66–0.64	−0.43	−0.99–0.14	0.59	0.02–1.27
Prenatal negative life events (range 0–8; median, IQR) §	2	1–3	2	1–3	2	1–3
Postnatal negative life events (range 0–8; median, IQR) §	2	1–3	2	1–3	2	1–3
Age at spirometry test (years; mean, SD)	6.99	0.89	6.90	0.78	7.10	0.99
Height at spirometry test (cm; mean, SD)	121.8	7.4	121.9	7.3	121.7	7.6
Birthweight for gestational age z-score (median, IQR)	−0.11	−0.79–0.57	−0.10	−0.76–0.72	−0.11	−0.72–0.54

^*Ever diagnosed with asthma prior to spirometry test

^†Maternal report of smoking and/or whether others smoked in the home at each postpartum interview

^‡Adjusted for age, sex, height, race

^§Assessed using Crisis in Family Systems-Revised (CRISYS-R) survey; multi-item survey summarized into a continuous score