Table 2 Proportion of specific causes of stillbirth in different stages
From: Clinical analysis of 126 cases of stillbirth in high-altitude areas
Specific | Total | Pre-stage group | Post-stage group | χ2 | P |
|---|---|---|---|---|---|
Maternal factors (n = 72) | |||||
Hypertensive disorder complicating pregnancy | 44(61.11) | 36(81.82) | 8(18.18) | 5.159 | 0.023 |
Pregnancy complicated with severe anemia | 14(19.44) | 12(85.71) | 2(14.29) | 2.047 | 0.152 |
Intrahepatic cholestasis of pregnancy | 7(9.72) | 7(100.00) | 0(0.00) | 3.323 | 0.068 |
Pregnancy complicated with syphilis | 1(1.39) | 1(100.00) | 0(0.00) | 0.452 | 0.501 |
Pregnancy complicated with hepatitis B | 4(5.56) | 1(25.00) | 3(75.00) | 1.852 | 0.174 |
Uterine rupture | 2(2.78) | 1(50.00) | 1(50.00) | 0.345 | 0.557 |
Fetal factors (n = 14) | |||||
Fetal malformation | 9(64.29) | 4(44.44) | 5(55.56) | 2.745 | 0.098 |
Fetal distress not terminated | 2(14.29) | 2(100.00) | 0(0.00) | 0.911 | 0.340 |
Fetal growth restriction | 1(7.14) | 0(0.00) | 1(100.00) | 2.249 | 0.134 |
Twin twin transfusion syndrome | 1(0.79) | 1(100.00) | 0(0.00) | 0.452 | 0.501 |
Mother child blood type incompatibility | 1(0.79) | 1(100.00) | 0(0.00) | 0.452 | 0.501 |
Placental, fetal membrane, and umbilical cord factors (n = 45) | |||||
Placental abruption | 31(68.89) | 23(74.19) | 8(25.81) | 0.509 | 0.475 |
Placenta previa | 3(6.67) | 1(33.33) | 2(66.67) | 1.834 | 0.176 |
Premature rupture of membranes without amniotic fluid | 6(13.33) | 3(50.00) | 3(50.00) | 1.069 | 0.301 |
Umbilical cord prolapse | 4(8.89) | 0(0.00) | 4(100.00) | 9.216 | 0.002 |
Umbilical cord torsion | 1(2.22) | 0(0.00) | 1(100.00) | 2.249 | 0.134 |
Unknown or other reason (n = 28) | 28(22.22) | 18(64.29) | 10(35.71) | 0.382 | 0.537 |