Table 2 Demographic and peripartum factors (left column) grouped by normalization of post-void residual urine at 7 and 9 days. p values were calculated using Fisher’s exact test and Wilcoxon/Mann–Whitney tests respectively, to compare if there were differences in the grouped factors between patients with normalized PVR and those with persistent PVR (i.e., if there were differences in age distribution between patients with normalized and those with persistent PVR)
From: Postpartum urinary retention: what are the sequelae? A long-term study and review of the literature
Total (n = 62) | PVR > 150 ml by day 7 (n = 44) | PVR ≤ 150 ml by day 7 (n = 18) | p value day 7 | PVR > 150 ml by day 9 (n = 4) | PVR ≤ 150 ml by day 9 (n = 58) | p value day 9 | |
|---|---|---|---|---|---|---|---|
Median (lq, uq) or n (%) | Median (lq, uq) or n (%) | Median (lq, uq) or n (%) | Median (lq, uq) or n (%) | Median (lq, uq) or n (%) | |||
Age (years) | 29 (23, 35) | 29 (23, 35) | 34 (23, 37) | 0.63 | 37 [27, 41] | 29 [23, 35] | 0.23 |
BMI (kg/m2) | 27 (21, 29) | 27 (21, 29) | 28 (27, 29) | 0.33 | 29 (29, 34) | 27 (21, 29) | 0.030 |
Spontaneous delivery | 0.14 | 0.12 | |||||
No | 52 (84%) | 39 (89%) | 13 (72%) | 2 (50%) | 50 (86%) | ||
Yes | 10 (16%) | 5 (11%) | 5 (28%) | 2 (50%) | 8 (14%) | ||
1st stage of labor (min) | 390 (320, 580) | 343 (320, 580) | 470 (340, 580) | 0.64 | 508 (343, 670) | 390 (320, 580) | 0.19 |
2nd stage of labor (min) | 190 (90, 200) | 170 (90, 198) | 190 (90, 210) | 0.83 | 195 (193, 198) | 150 (90, 210) | 0.22 |
Birthweight (kg) | 3.9 (3.5, 4.1) | 3.9 (3.4, 4.1) | 3.7 (3.5, 4.0) | 0.67 | 3.9 (3.8, 4.2) | 3.8 (3.3, 4.1) | 0.33 |
Head circumference (cm) | 36 (35, 36) | 36 (35, 36) | 36 (35, 36) | 0.97 | 36 (36, 37) | 36 (35, 36) | 0.40 |
Duration of pregnancy (days) | 275 (263, 280) | 267 (258, 280) | 278 (263, 280) | 0.45 | 273 (259, 282) | 275 (263, 280) | 0.93 |
Epidural | 0.27 | 1.00 | |||||
No | 24 (39%) | 19 (43%) | 5 (28%) | 1 (25%) | 23 (40%) | ||
Yes | 37 (60%) | 24 (55%) | 13 (72%) | 2 (50%) | 35 (60%) |