Table 1.

Clinical characteristics of the study population

	Control group	Normal pregnancy group
Age (years)	35.16 ± 1.52	35.80 ± 1.32
Gestational age (weeks/range)	–	29.8 ± 0.71
Systolic blood pressure (mmHg)	112.5 ± 3.16	110.0 ± 2.07
Diastolic blood pressure (mmHg)	72.90 ± 2.49	70.66 ± 2.17
Erythrocytes (RBC) (106/mm3)	4.38 ± 0.07	3.89 ± 0.11**
Hemoglobin (HGB) (g/dl)	13.26 ± 0.25	11.98 ± 0.29**
Hematocrit (HCT) (%)	40.0 ± 0.76	35.0 ± 0.87***
n	8–9	14–30

Results are expressed as the mean value ± SEM (n = 39). Data were analyzed by unpaired t-test. **P < 0.01; ***P < 0.001.