Table 2. Comparison of clinicopathological features between the patients with EBV(+) and EBV(−) placentas.
| Clinical features | EBV status | ||
|---|---|---|---|
| Negative (n = 52) | Positive (n = 16) | P value | |
| Maternal age (range), yr | 33.06 ± 3.70 (26–43) | 33.06 ± 4.17 (27–40) | 0.998 |
| Gestational age at delivery, day | 242.21 ± 26.67 | 241.56 ± 26.85 | 0.933 |
| Fullterm delivery history | 0.231 | ||
| 0 | 33 | 7 | |
| 1–2 | 18 | 9 | |
| Preterm delivery history | 1.000 | ||
| 0 | 47 | 15 | |
| 1 | 4 | 1 | |
| Spontaneous abortion history | 0.427 | ||
| 0 | 43 | 12 | |
| 1–3 | 6 | 3 | |
| Artificial abortion history | 0.669 | ||
| 0 | 46 | 14 | |
| 1–2 | 2 | 2 | |
| Maternal height, cm | 161.56 ± 5.52 | 161.64 ± 5.47 | 0.962 |
| Pre-pregnancy BMI, kg/m2 | 21.37 ± 4.04 | 23.14 ± 4.62 | 0.196 |
| Post-pregnancy BMI, kg/m2 | 25.51 ± 4.71 | 27.95 ± 5.29 | 0.113 |
| Proteinuria | 0.428 | ||
| 0 | 46 | 14 | |
| 1+–4+ | 1 | 1 | |
| Systolic BP, mmHg | 116.12 ± 14.68 | 123.19 ± 11.29 | 0.081 |
| Diastolic BP, mmHg | 74.46 ± 13.29 | 75.63 ± 10.83 | 0.751 |
| Blood glucose, mg/dL | 94.05 ± 21.54 | 83.08 ± 11.06 | 0.085 |
| Labor induction history | 1.000 | ||
| No | 44 | 14 | |
| Yes | 7 | 2 | |
| Fetal death | 1.000 | ||
| Alive | 49 | 16 | |
| Dead | 2 | 0 | |
| Fetal weight, kg | 2.30 ± 0.92 | 2.40 ± 0.92 | 0.693 |
| Fetal gender | 0.764 | ||
| Male | 43 | 12 | |
| Female | 21 | 4 | |
| Apgar score 1 min | 0.665 | ||
| > 7 | 26 | 7 | |
| ≤ 7 | 23 | 8 | |
| Apgar score 5 min | 0.770 | ||
| > 7 | 15 | 4 | |
| ≤ 7 | 34 | 11 | |
| Placental weight, g | 576.92 ± 233.11 | 500.00 ± 160.26 | 0.233 |
| Acute chorioamnionitis | 1.000 | ||
| Absent | 31 | 9 | |
| Present | 21 | 7 | |
| Acute funisitis | 1.000 | ||
| Absent | 47 | 15 | |
| Present | 5 | 1 | |
| Acute inflammation | 0.567 | ||
| Absent | 27 | 7 | |
| Present | 25 | 9 | |
| Chronic villitis | 0.342 | ||
| Absent | 48 | 13 | |
| Present | 4 | 3 | |
| Chronic chorioamnionitis | 1.000 | ||
| Absent | 37 | 12 | |
| Present | 15 | 4 | |
| Chronic deciduitis | 0.689 | ||
| Absent | 45 | 13 | |
| Present | 7 | 3 | |
| Chronic inflammation | 0.769 | ||
| Absent | 33 | 9 | |
| Present | 19 | 7 | |
Data are shown as mean ± standard deviation.
EBV = Epstein-Barr virus, BMI = body mass index, BP = blood pressure.