Table 3.
Multivariate analysis of the relationships between urine protein-to-creatinine ratio and hypertension and other important variables during labor at term delivery using a linear regression model
| uPCR during the course of labor | Latent phase uPCR B estimate p |
Active phase uPCR B estimate p |
Recovery phase uPCR B estimate p |
Postpartum phase uPCR B estimate p |
|---|---|---|---|---|
| PIH vs normal | 3.06 0.907 | 189.49 0.181 | -11.70 0.940 | 131.62 0.257 |
| Age | -0.30 0.905 | -7.14 0.597 | 6.04 0.686 | 0.49 0.965 |
| Gravidity | ||||
| gravidity 2 vs gravidity 1 | 111.33 0.004* | -70.72 0.725 | 152.49 0.495 | 127.77 0.440 |
| gravidity ≥ 3 vs gravidity 1 | 48.13 0.219 | -22.16 0.914 | 132.76 0.559 | 38.52 0.819 |
| Parity | ||||
| parity 1 vs parity 0 | -72.47 0.055 | -48.72 0.808 | -245.71 0.270 | -212.54 0.198 |
| parity ≥ 2 vs parity 0 | -46.49 0.436 | -75.28 0.813 | 37.12 0.916 | -296.39 0.259 |
| Gestational age | -5.88 0.658 | 36.774 0.604 | -3.94 0.960 | 62.38 0.285 |
| BMI group# | ||||
| 3 (> 24) vs 2 (18-24) | -67.26 0.038* | -9.82 0.954 | -333.63 0.082 | 46.81 0.740 |
| Newborn weight | -0.01 0.782 | 0.19 0.289 | -0.06 0.754 | -0.10 0.487 |
| Delivery method | ||||
| VED vs NSD | 22.43 0.372 | 88.92 0.507 | 176.64 0.236 | -26.44 0.810 |
Statistical analysis: linear regression model, uPCR was regarded as continuous variable
*uPCR in latent phase: gravidity of 2 vs gravidity of 1, B estimate: 111.33, 95% CI: 36.75-185.91, p = 0.004; BMI 3 (> 24) vs 2 (18-24), B estimate: -67.26, 95% CI: -130.8- -3.67, p = 0.038
#Participants were classified by body mass index (BMI) as group 1 (< 18), group 2 (18-24) and group 3 (> 24).
uPCR, urine protein-to-creatinine ratio; PIH, pregnancy-induced hypertension; VED, vacuum extraction vaginal delivery; NSD, normal spontaneous vaginal delivery.