From: Base excess and hematocrit predict response to indomethacin in very low birth weight infants with patent ductus arteriosus
Baseline characteristic
OR (95% CI)
P value
Birth weight
1.002 (1.00–1.01)
0.021
Gestational age
1.48 (1.13–1.93)
0.005
Apgar score at 5 min
  > 6
1.00
 0–3
0.16 (0.03–0.77)
0.02
 4–6
0.34 (0.12–0.94)
0.04