Table 1.
Clinical characteristics of the groups*.
| Groups | Age of mother (yr) Mean ± SD, range |
Gestational age (wk) Mean ± SD, range |
Number of cases (%) | Number of samples (%) |
|---|---|---|---|---|
| Group 1 | 30.78 ± 3.36 (17–40) | 7.63 ± 1.68 (5–12) | 42 (22.8) | 46 (23.2) |
| Group 2 | 28.85 ± 6.11 (19–39) | 17.9 ± 4.18 (13–24) | 15 (8.2) | 16 (8.1) |
| Group 3 | 29.88 ± 7.25 (19–41) | 31.06 ± 5.09 (24–38) | 20 (10.9) | 22 (11.2) |
| Group 4 | 32.59 ± 5.61 (24–44) | 8.54 ± 0.70 (8–12) | 29 (15.7) | 31 (15.6) |
| Group 5 | 36.17 ± 7.89 (19–50) | 10.00 ± 2.11(8–10) | 29 (15.7) | 31 (15.6) |
| Group 6 | 27.40 ± 6.99 (22–40) | 29.60 ± 6.38 (28–40) | 14 (7.6) | 15 (7.6) |
| Group 7 | 33.06 ± 7.79 (18–49) | 32.43 ± 6.73(28–36) | 23 (12.5) | 25 (12.6) |
| Group 8 | 29.00 ± 30.80 (25–33) | 27.60 ± 3.64(24–32) | 12 (6.6) | 12 (6.1) |
| Total | 31.69 ± 7.39 (17–50) | 14.57 ± 8.96 (5–40) | 184 (100) | 198 (100) |
*Group 1 (first trimester, ≤13 weeks of gestation), group 2 (second trimester, 14–27 weeks), group 3 (term placenta, 28–40 weeks), group 4 (non-molar hydropic abortion), group 5 (molar pregnancy), group 6 (acute placental inflammation), group 7 (intrauterine growth retardation [IUGR]), and group 8 (preeclampsia). yr, years; wk, week.