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Table 1 Demographic details of study population

From: Reference values for diaphragm electrical activity (Edi) in newborn infants

Demographic Characteristic Number (N)
Sex
 Male 11
 Female 13
GA at birth
 29+0 - 36+6 weeks 16
 ≥ 37+0 weeks 8
 Median (range) 34+5 (29+5 – 40+6) weeks
Birth Weight
 <1500g 3
 1500-2499g 14
 ≥2500g 7
 Median (range) 2070 (1270-3490) g
Birth Weight <10th percentile 6
Age (in days) at time of study
 Median (range) 10 (2-34) days
GA at time of studya
 29+0 - 36+6 weeks 15
 ≥ 37+0 weeks 9
 Median (range) 36+1 (31+2 – 41+1) weeks
Weight at time of study
 <1500g 2
 1500-2499g 13
 ≥2500g 9
 Median (range) 2153 (1280-3775) g
Maximum respiratory support prior to time of study
 No Respiratory Support 8
 CPAP 6
 Low Flow Oxygen 1
 High Flow Oxygen 2
 Mechanical Ventilation 7
Primary Reason for Admissionb
 Transient tachypnoea of the newborn 4
 Jaundice with phototherapy 1
 Surgical reviewc 2
 Prematurity 11
 Low Birth Weight 2
 Neonatal abstinence syndrome 1
 Risk of Sepsis 2
 Hypoglycaemia 1
  1. aOne preterm infant had reached term corrected age (exact gestation: 39+3 weeks) at the time of enrolment but was included in the preterm group for analyses
  2. bAt the time of enrolment, all subjects were breathing comfortably in room air and had no respiratory compromise associated with their primary reason for admission
  3. cBoth neonates required gastrointestinal surgery (Hirschsprung’s disease; colonic atresia)