Table 1: Characteristics of patients in the study groups and predelivery thrombosis risk factors.

ThromboprophylacticGroup AGroup B
regimenBemiparin 3500 IU/5 daysBemiparin 3500 IU/10 days

Number of cases ( )311335
Mean age ± SD31.37 ± 5.2431.06 ± 5.62
Age ≥35 years (%)89 (28.61%)98 (29.25%)
Parity ( ) (%)
 0149 (47.9%)174 (51.9%)
 190 (28.9%)101 (30.1%)
 246 (14.8%)41 (12.2%)
 313 (4.2%)13 (3.9%)
 ≥413 (4.2%) 6 (1.8%)
BMI ( ) (%)
 BMI > 30142 (45.8%)116 (34.62%)
 BMI > 3536 (11.6%)22 (6.56%)
Smoking ( ) (%)51 (16.5%)40 (11.9%)
 >10 cigs./day16 (16%)9 (2.25%)
Drug consumption ( ) (%)1 (0.3%)1 (0.3%)
Multiple pregnancy ( ) (%)13 (4.2%)19 (5.6%)
Hypertension ( ) (%)
 Chronic hypertension6 (1.9%)0
 PIH in previous pregnancy4 (1.3%)6 (1.8%)
 PIH in current pregnancy 34 (10.9%) 35 (10.4%)
Diabetes ( ) (%)15 (4.82%)26 (1.8%)
 Type I3 (1%)2 (0.6%)
 Gestational diabetes8 (2.6%)18 (5.4%)
 Carbohydrate intolerance4 (1.3%)6 (1.8%)
Previous heart disease (%)01 (0.3%)
Immobility ( ) (%)01 (0.3%)

BMI: body mass index, PIH: pregnancy-induced hypertension.