Table 6.

Risk ratios (95% Confidence Intervals) of Strabismus at Age 2 Years Associated with Antecedents and Correlates.^a

		Odds ratios (95% confidence intervals)
Occurred/identified	Antecedent/correlate	Ante-/neonatal	Early postnatal	Late postnatal
Antenatal/neonatal	Mother consumed aspirin	2.1 (1.1, 4.1)	2.1 (1.1, 4.2)	2.1 (1.02, 4.2)
	Gestational age 23–24 wk	2.8 (1.7, 4.8)	1.9 (1.1, 3.6)	1.4 (0.8, 2.6)
	Gestational age 25–26 wk	1.8 (1.1, 2.9)	1.5 (0.9, 2.4)	1.3 (0.8, 2.1)
	Birth weight Z score <–2	2.2 (1.1, 4.2)	2.0 (1.00, 2.7)	1.6 (0.8, 3.2)
Early postnatal	SNAP-II ≥30		1.8 (1.2, 2.7)	1.6 (1.00, 2.4)
	Postnatal steroidb		1.7 (1.1, 2.6)	1.4 (0.9, 2.2)
	Definite late bacteremiac		1.6 (1.1, 2.3)	1.4 (0.9, 2.1)
Late postnatal	Ventriculomegaly			2.3 (1.3, 3.9)
	Type I ROP			2.5 (1.5, 4.0)
	BPD ventilator-dependentd			2.8 (1.6, 4.8)

Abbreviations: BPD, bronchopulmonary dysplasia; ROP, retinopathy of prematurity; SNAP-II, Score for Neonatal Acute Physiology.

^aThese are calculated from time-oriented logistic risk models. Variables were retained in the model if the P value when they first entered the model was <.01. Bold items are statistically significant.

^bHydrocortisone or dexamethasone.

^cCulture proven bacteremia in weeks 2–4.

^dOn ventilator as well as oxygen at 36 weeks postmenstrual age.