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. 2013 Nov 2;382(9903):1496–1506. doi: 10.1016/S0140-6736(13)60992-7

Table 1.

Baseline characteristics of mothers and fetuses

Vesicoamniotic shunt(n=16) Conservative management (n=15)
Maternal age (years) 27 (23–33) 28 (26–33)
Maternal age group*
<20 years 2 0
20–35 years 12 12
>35 years 2 3
Ethnic origin
White 13 13
Asian 2 1
Black 1 1
Gestational age (weeks) 20 (16–22) 21 (19–22)
Gestational age group*
<24 weeks 13 14
≥24 weeks 3 1
Amniotic fluid volume maximum pool depth (cm) 1·6 (0–2·9) 1·0 (0·2–2·9)
Amniotic fluid volume, by centile*
<5th centile 10 9
≥5th centile 6 6
Renal pelvis dilatation, left (mm) 7·4 (5·0–14) 7·3 (5·0–9·0)
Renal pelvis dilatation, right (mm) 8 (4·8–10) 8·6 (5·0–11)
Anteroposterior renal pelvis dilatation diameter >90th centile
Bilateral 13 12
Unilateral 2 0
Neither 0 1
Not recorded 1 2
Renal pelvis severe hydronephrosis >1·5 cm§
Bilateral 1 0
Unilateral 1 1
Neither 13 13
Not recorded 1 1
Macrocystic renal appearance
Bilateral 0 1
Unilateral 2 4
Neither 14 10
Renal echogenicity
Bilateral 2 4
Unilateral 3 3
Neither 7 5
Not recorded 4 3
Bladder wall thickness >3 mm
Yes 6 9
No 8 5
Not recorded 2 1

Data are n or median (IQR).

*

Stratification variable and predefined subgroup.

See reference 23.

See reference 24.

§

See reference 25.