Respiratory severity score as a predictive factor for severe bronchopulmonary dysplasia or death in extremely preterm infants

Table 3 Optimal cut-off of respiratory severity scores for predicting severe bronchopulmonary dysplasia at 14, 21, and 28 days of life

Postnatal day	Cut-point	p-value	RSS	Odds Ratio	95% Confidence Interval
14	3	0.0006	RSS < 3.00	0.089	0.022, 0.352
14	3	0.0006	RSS ≥ 3.00	11.265	2.842, 44.646
21	3.6	0.0003	RSS < 3.60	0.066	0.015, 0.288
21	3.6	0.0003	RSS ≥ 3.60	15.162	3.467, 66.316
28	3.24	0.0005	RSS < 3.24	0.093	0.025, 0.354
28	3.24	0.0005	RSS ≥ 3.24	10.713	2.825, 40.63

ISSN: 1471-2431