From: Effect of maternal stress during pregnancy on the risk for preterm birth
Index group | Control group | ||||
---|---|---|---|---|---|
N | % | N | % | P-value** | |
SSRI use during pregnancy | 0.183 | ||||
Yes | 10 | 7 | 5 | 3.1 | |
No | 132 | 93 | 156 | 96.9 | |
Twin pregnancy | <0.000 | ||||
Yes | 24 | 15 | 0 | 0 | |
No | 136 | 85 | 165 | 100 | |
Amniotic fluid pathology | 0.034 | ||||
Normal | 132 | 91.7 | 157 | 98.1 | |
Polyhydramnios | 5 | 3.5 | 1 | 0.6 | |
Oligohydramnios | 7 | 4.9 | 2 | 1.3 | |
Genital tract infection | <0.000 | ||||
Yes | 36 | 24.8 | 13 | 8.1 | |
No | 109 | 75.2 | 147 | 91.9 | |
Premature contractions | <0.000 | ||||
Yes | 60 | 40.3 | 24 | 15 | |
No | 89 | 59.7 | 136 | 85 | |
Cervical changes | <0.000 | ||||
Yes | 21 | 14.2 | 4 | 2.5 | |
No | 127 | 85.8 | 156 | 97.5 | |
Vaginal bleeding | <0.000 | ||||
Yes | 59 | 40 | 15 | 9 | |
No | 89 | 60 | 144 | 91 | |
Anemia | 0.601 | ||||
Yes | 8 | 6 | 7 | 4 | |
No | 126 | 94 | 152 | 96 | |
PPROM | <0.000 | ||||
Yes | 94 | 59.5 | 1 | 0.6 | |
No | 64 | 40.5 | 164 | 99.4 | |
SGA | <0.000 | ||||
Yes | 24 | 15.3 | 4 | 2.4 | |
No | 133 | 84.7 | 165 | 97.6 | |
Congenital defects | 0.279 | ||||
Yes | 9 | 5.7 | 5 | 3 | |
No | 149 | 94.3 | 164 | 97 | |
Placental abruption | 0.003 | ||||
Yes | 8 | 5 | 0 | 0 | |
No | 151 | 95 | 168 | 100 | |
Preeclampsia | <0.000 | ||||
Yes | 14 | 8.8 | 5 | 3 | |
No | 145 | 91.2 | 163 | 97 | |
Maternal stress during pregnancy | <0.000 | ||||
Yes | 58 | 42.3 | 32 | 20 | |
No | 79 | 57.7 | 128 | 80 | |
Onset of labor | 0.005 | ||||
Spontaneous | 123 | 76.9 | 150 | 88.8 | |
Induced | 37 | 23.1 | 19 | 11.2 | |
Mode of delivery | <0.000 | ||||
Vaginal | 98 | 61.6 | 143 | 84.6 | |
Vacuum extraction | 8 | 5 | 13 | 7.7 | |
Cesarean section | 53 | 33.3 | 13 | 7.7 | |
Mean | SD | Mean | SD | p* | |
Gestational week at birth | 33.06 | 3.84 | 40.03 | 1.2 | <0.000 |