FactorsGroup 1n = 87 (%)M ± SDGroup 2n = 59 (%)M ± SDGroup 3n = 14 (%)M ± SDp-valueGroup 1 vs. Group 3p-valueGroup 2 vs. Group 3
Age [years]29.4 ± 6.429.7 ± 6.127.4 ± 4.80.310.22
Gestational age at delivery [hbd]30.8 ± 3.930.9 ± 4.039.8 ± 1.3< 0.001< 0.001
Birth weight [g]1706.2 ± 8291749.8 ± 8513470.0 ± 452< 0.001< 0.001
Parity12>3     
52 (60)37 (63)12 (86)  
25 (29)19 (32)2 (14)0.430.46
10 (11)3 (5)0  
History of PTB14 (16)8 (14)1 (7)0.380.49
History of miscarriages9 (10)6 (10)1 (7)0.710.72
History of stillbirth5 (6)2 (3)00.120.46
Mode of deliveryVaginal Delivery C-section   0.460.59
75 (86)52 (88)13 (93)
12 (14)7 (12)1 (7)
Height of the mother [cm]163.7 ± 5.1164.1 ± 5.2165.4 ± 4.50.260.4
Weight before pregnancy [kg]60.7 ± 10.062.7 ± 10.359.9 ± 10.10.80.43
Weight at delivery [kg]68.9 ± 11.570.5 ± 12.273.9 ± 130.170.38
BMI before pregnancy [kg/m2]21.7 ± 5.522.7 ± 5.321.8 ± 4.40.990.61
Temperature at delivery [C]36.7 ± 0.436.7 ± 0.436.5 ± 0.40.140.064
Hemoglobin at delivery [mg/dl]11.4 ± 1.111.4 ± 1.112.3 ± 1.20.020.035
White blood cells count at delivery [109/L]13.9 ± 5.812.4 ± 4.110.7 ± 3.20.0920.23
Average FHR on admission [b/min]144.3 ± 9.2144.4 ± 10.1144.3 ± 6.60.980.95
Maternal heart rate on admission [b/min]79.8 ± 8.079.6 ± 6.082.9 ± 10.80.230.15
Use of Tocolysis40 (46)27 (46)2 (14)0.0180.022
Use of Steroids 29 (33)19 (32)1 (7)0.0270.037
Antibiotics28 (32)19 (32)3 (21)0.410.42
Diabetes     
Pregestational diabetes mellitus001 (7)0.0120.039
Gestational diabetes mellitus3 (4)2 (3)1 (7)0.510.53
Pregnancy Hypertension2 (2)1 (2)00.570.51
Smoking in pregnancy14 (16)12 (20)2 (14)0.860.61
Alcohol in pregnancy7 (8)5 (9)3 (21)0.120.16
Low socioeconomic status9 (10)5 (9)00.0930.14