Table 3.

Bronchodilator Use by Subgroup.

	INO (%)	Placebo (%)	Odds Ratio* (95% CI)
White	37.7	49.6	0.54 (0.32–0.91)
Minority	43.8	59.4	0.54 (0.31–0.96)
Female	31.4	48.4	0.49 (0.27–0.88)
Male	47.5	58.3	0.56 (0.34–0.94)
Study Entry: 7–14 days old	34.5	50.0	0.51 (0.27–0.96)
Study Entry: 15–21 days old	43.4	56.4	0.54 (0.33–0.88)
Birth Weight 500–799g	38.1	51.6	0.53 (0.33–0.87)
Birth Weight 800–1250g	43.8	58.2	0.54 (0.29–1.01)

^*Odds Ratio, calculated by GEE.