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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)