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Table 2 Comparing the outcome of PDA ligation after 1 or more courses of prostaglandin synthetase inhibitors

From: Outcome following patent ductus arteriosus ligation in premature infants: a retrospective cohort analysis

Parameter Ligation after 1 course of PSI (n = 28) Ligation after >1 course of PSI (n = 33) p value
Age at operation. Median (95% CI) 24 (21–27) days 31 (25–44) days 0.004*
Total days in oxygen. Median (95% CI) 85.5 (58–120) 119 (89–175) 0.09*
Incidence of CLD 19 (68%) 28 (85%) 0.14¥
Deaths 7 (25%) 8 (24%) 1.0¥
  1. *Mann Whitney U test
  2. ¥Fisher exact test