TABLE 6.

ORs and 95% CIs Obtained With TORMs of MDI <55

Epoch	Epoch, OR (95% CI)
	Antenatal	Neonatal (First 28 d)	36 wk PMA
Antenatal
Gestational age 23–24 wk	1.7 (1.00–3.1)	1.4 (0.6–3.0)	1.3 (0.7–2.8)
Single mother	2.3 (1.5–3.5)	2.3 (1.5–3.5)	2.3 (1.5–3.6)
Preeclampsia or fetal indication	2.0 (1.01–3.8)	1.9 (0.96–3.8)	1.9 (0.9–3.8)
Neonatal (first 28 d)
Late bacteremia	—	1.8 (1.3–2.5)	1.8 (1.3–2.5)
Pneumothorax	—	3.7 (2.6–5.4)	3.6 (2.5–5.4)
NEC ≥ stage II	—	2.2 (1.3–3.7)	2.1 (1.2–3.7)
36 wk PMA
CLD without MV	—	—	1.1 (0.8–1.4)
CLD with MV	—	—	1.2 (0.7–2.3)

These analyses include only those children without a severe gross motor impairment (GMFCS score < 1). Antenatal epoch includes the following variables: gestational age of 23–24 weeks; gestational age of 25–26 weeks; single mother; complete course of antenatal steroids; cesarean delivery; and delivery for preeclampsia or fetal indications. Neonatal epoch includes the following variables: SNAP-II in the top quartile; MV or high-frequency ventilation at 7 days; late bacteremia; pneumothorax; PIE; Pao₂ in the lowest quartile (week 1); Pao₂ missing (week 1); transfusions (packed red blood cells); PD; EPPD; ventriculomegaly; echolucent lesion; echodense lesion; NEC stage II or worse; methylxanthine; PDA; and PDA ligation. Thirty-six weeks' PMA epoch includes the following variables: CLD without MV (CMV or high-frequency ventilation) at 36 weeks and CLD with MV.