Table 2.

Outpatient Clinical Characteristics at Time of Recruitment

Mean ± SD [Range]	Entire Study Population (n = 341)	Any Daycare (n = 64)	No Daycare (n = 277)	P value
Smokers in the home (% yes)	11.7%	14.1%	11.2%	0.39
Children in the home (#)	2.0 ± 1.2 [1, 7] (n = 328)	1.9 ± 1.1 [1, 6] (n = 62)	2.0 ± 1.2 [1, 7] (n = 266)	0.63
Nasal cannula oxygen (% yes)	37.8%	32.8%	39.0%	0.97
Tracheostomy (% yes)	14.7%	9.4%	15.9%	0.06
Home (invasive) ventilator (% yes)	11.1%	6.3%	12.3%	0.07
Inhaled steroids (% yes)	45.2%	45.3%	45.1%	0.44
Pulmonary hypertension medications (% yes)	10.0%	10.9%	9.8%	0.92
Feeding tube (% yes)	38.3% (n = 337)	29.0% (n = 62)	40.4% (n = 275)	0.24
Any human milk (% yes)	22.6%	18.8%	23.5%	0.84
Medicaid (% yes)	52.0% (n = 333)	50.8% (n = 82)	52.2% (n = 251)	0.84

^*P values were generated through regression models adjusted for recruitment age (years) and clustered by center.