Table 1.
Baseline characteristics of 348 children with antenatal hydronephrosis by anteroposterior diameter of the renal pelvis and Society for Fetal Urology grading systems
| Characteristic | All Patients (N=348) | Anteroposterior Diameter of the Renal Pelvis | Society for Fetal Urology Grading System | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| <6 mm (n=75) | ≥6–9 mm (n=72) | >9–15 mm (n=104) | >15 mm (n=97) | P Value | I (n=68) | II (n=131) | III (n=55) | IV (n=94) | P Value | ||
| Male sexa | 289 (83) | 61 (81.3) | 61 (84.7) | 87 (83.6) | 80 (82.5) | 0.95 | 55 (80.9) | 112(85.5) | 48 (87.3) | 74 (78.7) | 0.44 |
| Age at first ultrasound (d)b | 18 (7–42) | 18 (7–43) | 16.5 (7–42) | 16 (8.5–35) | 20 (7–46) | 0.97 | 21(7.5–37.5) | 18 (9–42) | 14 (7–33) | 17.5(6–46) | 0.57 |
| Duration of follow-up (d)b | 1554±739 | 1387±755 | 1361±704 | 1551±697 | 1831±722 | 0.001 | 1295±707 | 1450±721 | 1796±657 | 1746±752 | 0.001 |
| Laterality,a left-sided, right-sided, and bilateral | 174 (50) | 41 (54.6) | 40 (55.5) | 54 (51.9) | 39 (40.2) | 0.29 | 37 (54.4) | 76 (58) | 22 (40) | 39 (41.5) | 0.50 |
| 44 (12.6) | 10 (13.4) | 6 (8.4) | 11 (10.6) | 17 (17.5) | 6 (8.8) | 5 (3.8) | 12 (21.8) | 21 (22.3) | |||
| 130 (37.4) | 24 (32) | 26 (36.1) | 39 (37.5) | 41 (42.3) | 25 (36.8) | 50 (38.2) | 21 (38.2) | 34 (36.2) | |||
| Prophylaxisa | 237 (68.1) | 48 (64) | 43 (59.7) | 70 (67.3) | 76 (78.3) | 0.11 | 37 (54.4) | 86 (65.6) | 39 (70.9) | 75 (79.8) | 0.07 |
| UTIa | 15 (4.3) | 6 (8) | 2 (2.7) | 6 (5.7) | 1 (1) | 0.11 | 4 (5.8) | 8 (6.1) | 1 (1.8) | 2 (2.1) | 0.34 |
| VCUGa | 250 (71.8) | 39 (52) | 50 (69.4) | 78 (75) | 83 (85.5) | 0.001 | 38 (55.8) | 83(63.3) | 50 (90.9) | 79 (84) | 0.001 |
| VURa | 35 (14) | 4 (10.2) | 6 (12) | 10 (12.8) | 15 (18) | 0.60 | 5 (13.1) | 8 (9.6) | 7 (14) | 15 (18.9) | 0.40 |
Values are n (%), median (interquartile range), mean±SD, or as otherwise indicated. UTI, history of urinary tract infection during follow-up; VCUG, number of patients that had voiding cystourethrograms done; VUR, vesicoureteral reflux diagnosed.
a
Analyzed using ANOVA test.
b
Analyzed using Kruskal–Wallis test; statistically significant at P<0.05.