Table 2 Patients’ weight and age at time of referral and time of surgery

Gestational age (weeks)

Range

26–41

24–40

Mean

34.6

35.7

Birth weight (kg)

Range

0.85–3.59

0.60–3.3

Mean

2.1

2.1

Age at referral (days)

Range

26–150

2–450

Mean

61

79

Weight at referral (kg)

Range

1.5–4

1.4–3.3

Mean

2.6

2.3

Age at operation (days)

Range

28–240

14–460

Mean

91

97.5

Weight at operation (kg)

Range

1.6–6

1.4–4.8

Mean

2.8

2.2