Table 1 Patient demographics of infants undergoing PDA ligation in the 3 centres – Centre A – Cambridge, Centre B – Guys and St Thomas, Centre C – Great Ormond Street. Results are expressed as median (95% confidence interval).
Demographic | Centre A n = 21 | Centre B n = 35 | Centre C n = 28 | p value* |
|---|---|---|---|---|
Birth weight (grams) Median (95% CI) | 820 (649–1020) | 770 (710–840) | 807 (728–980) | 0.67 |
Birth gestation (weeks) Median (95% CI) | 27 (24–28) | 25 (25–26) | 26 (25–27) | 0.32 |
Ligation weight (grams) Median (95% CI) | 963 (781–1169) | 1050 (910–1170) | 950 (795–1100) | 0.66 |
Ligation age (days) Median (95% CI) | 23 (20–31) | 31 (25–41) | 27 (21–30) | 0.05 |