Table 2. The clinical characteristics of patients with normal pregnancies and spontaneous abortions.

Characteristics	SA group	Control-2 group	P value
Sample size (N)	19	19
Maternal age (years)	34.71±4.57	34.11±3.95	0.34
Gravity	2.6±1.45	2.21±1.2	0.21
Deliveries	0.6±0.49	1.32±0.46	0.00
Systolic blood pressure (mmHg)	107.19±10.27	106.17±7.57	0.38
Diastolic blood pressure (mmHg)	68.44±9.08	69±7.8	0.43
Gestation age at delivery		275.17±8.44

SA, spontaneous abortion.