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Table 2 Average age and weight at treatment initiation

From: A cost-effectiveness analysis of respiratory syncytial virus (RSV) prophylaxis in infants in the United Kingdom

Subgroup Post conception age at birth (SE) Chronological age at start of administration (SE) Adjusted chronological age* Weight in g (upper and lower CI)
CHD babies§ 38.50 (0.10) 26.60 (0.8) 25.10 6,649 (6,257; 7,041)
CLD babies 29.00 (0.11) 23.12 (0.68) 14.13 4, 833 (4,084; 4,527)
Preterm: <29 wGA 29.00 (3.70) 15.40 (0.51) 4.40 3,709 (3,503; 3,915)
Preterm: 29–32 wGA 30.50 (3.89) 12.39 (0.34) 2.89 3,959 (3,804; 4,114)
Preterm: 33–35 wGA 34.00 (4.34) 10.89 (0.46) 4.89 4,306 (4,084; 4,527)
  1. Abbreviations: CI Confidence interval, SE Standard error, CHD Congenital heart disease, CLD Chronic lung disease, wGA weeks of gestational age. * Calculated assuming a normal gestation of 40 weeks; Estimated assuming a confidence interval of ± 25%; Gamma distribution; § Data from Feltes et al. 2003 [4] or MedImmune Data on File.