Effects of Secondhand Smoke Exposure on the Health and Development of African American Premature Infants

Table 1

Raw, unadjusted means for infant growth, illness, and developmental outcomes by household smoke exposure status and age.

Variables	Mean
	2 mo. (n)	6 mo. (n)	12 mo. (n)	18 mo. (n)	24 mo. (n)
Height (cm)
Exposed		65.4 (23)	74.0 (28)	81.6 (22)	85.8 (42)
Non-exposed		65.7 (89)	73.7 (111)	80.9 (72)	85.6 (82)
Weight (kg)
Exposed		7.8 (26)	9.4 (28)	11.5 (27)	12.0 (44)
Non-exposed		7.7 (94)	9.2 (114)	10.9 (81)	11.8 (85)
Head circumference (cm)
Exposed		42.8 (19)	45.4 (27)	47.6 (24)	48.0 (44)
Non-exposed		42.8 (84)	45.5 (112)	46.9 (69)	47.8 (85)
Wheezing*
Exposed	0.2 (20)	0.3 (29)	0.4 (34)	0.4 (34)	0.4 (46)
Non-exposed	0.2 (134)	0.4 (112)	0.5 (123)	0.4 (92)	0.5 (93)
Otitis media*
Exposed	0.2 (20)	0.4 (29)	0.5 (33)	0.5 (34)	0.4 (46)
Non-exposed	0.1 (134)	0.3 (112)	0.5 (124)	0.4 (92)	0.4 (92)
MDI
Exposed			90.5 (32)		75.5 (44)
Non-exposed			92.6 (114)		79.4 (91)
PDI
Exposed			83.0 (32)		82.6 (44)
Non-exposed			87.9 (113)		88.5 (91)

* indicates the proportion with the event.