Table 5 Risk factors for postpartum VTE after stratification by RCOG risk scores
| Â | low- score | high- score | |||||||
|---|---|---|---|---|---|---|---|---|---|
Variable | non-VTE(n=192) N(%) | VTE (n=60) N(%) | X2 | P | non-VTE(n=221) N(%) | VTE(n=86) N(%) | X2 | P | |
Age≥35 years | 21(10.9) | 4(6.7) | 0.516 | 0.472 | 76(34.4) | 36(41.9) | 1.491 | 0.222 | |
Parity≥3 | 1(0.5) | 0(0) | / | 1.000 | 5(2.3) | 0(0) | / | 0.327 | |
BMI before pregnancy(≥30 kg/m2) | 1(0.5) | 0(0) | / | 1.000 | 7(3.2) | 2(2.3) | 0.000 | 0.987 | |
BMI before delivery(≥30 kg/m2) | 31(16.1) | 10(16.7) | 0.009 | 0.924 | 58(26.2) | 19(22.1) | 0.568 | 0.451 | |
Medical comorbidities | 6(3.1) | 0(0) | 0.812 | 0.368 | 4(1.8) | 3(3.5) | 0.211 | 0.646 | |
Cesarean section | 62(32.3) | 37(61.7) | 16.538 | 0.000 | 210(95) | 84(97.7) | 0.519 | 0.417 | |
Pre-eclampsia /eclampsia | 10(5.2) | 4(6.7) | 0.012 | 0.914 | 48(21.7) | 16(18.6) | 0.364 | 0.546 | |
DM/GDM | 16(8.3) | 5(8.3) | 0.000 | 1.000 | 30(13.6) | 12(14) | 0.008 | 0.931 | |
Preterm birth | 5(2.6) | 1(1.7) | 0.000 | 1.000 | 35(15.8) | 20(23.3) | 2.317 | 0.128 | |
IVF | 6(3.1) | 0(0) | / | 0.341 | 46(20.8) | 12(14) | 1.902 | 0.168 | |
PPH (>1Â L) | 6(3.1) | 5(8.3) | 2.971 | 0.085 | 17(7.7) | 7(8.1) | 0.017 | 0.896 | |
Immobility | 0(0) | 1(1.7) | 2.883 | 0.090 | 4(1.8) | 5(5.8) | 2.223 | 0.136 | |
FGR | 0(0) | 1(1.7) | / | 0.238 | 5(2.3) | 5(5.8) | 2.478 | 0.115 | |
Partum infection | 10(5.2) | 1(1.7) | 0.656 | 0.418 | 28(12.7) | 12(14) | 0.090 | 0.764 | |
transfusion | 5(2.6) | 4(6.7) | 1.170 | 0.279 | 12(5.4) | 6(7) | 0.268 | 0.604 | |
TC≥6.16 mmol/L | 111(57.8) | 44(73.3) | 4.651 | 0.031 | 104(47.1) | 56(65.1) | 8.089 | 0.004 | |
LDL≥2.70 mmol/L | 111(57.8) | 52(86.7) | 16.661 | 0.000 | 96(43.4) | 63(73.3) | 22.044 | 0.000 | |
D-Dimer ≥3.04 mg/L | 166(86.5) | 58(96.7) | 4.823 | 0.028 | 154(69.7) | 74(86) | 8.674 | 0.003 | |
WBC≥8.64*10^9 | 87(45.3) | 32(53.3) | 1.180 | 0.277 | 88(39.8) | 50(58.1) | 8.397 | 0.004 | |