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Table 1 Comparison of general characteristics between VTE and non-VTE delivery women age ≥ 35(x ± SD)

From: The predictive value of D-dimer test for venous thromboembolism during puerperium in women age 35 or older: a prospective cohort study

  VTE
(n = 30)
Non-VTE
(n = 12,421)
t value P value
Age (years) 38.10 ± 2.23 37.31 ± 2.29 1.893 .058
Height (cm) 161.13 ± 5.76 160.57 ± 4.71 0.650 .516
BMI before pregnancy 21.65 ± 2.96 21.05 ± 2.91 1.139 .255
BMI before delivery 26.70 ± 2.80 26.50 ± 2.99 0.363 .717
Gain weight during pregnancy (kg) 13.07 ± 3.19 14.04 ± 4.94 −1.067 .286
Gestational age at delivery (weeks) 37.83 ± 2.26 37.99 ± 1.95 −0.447 .655
Neonatal birth weight(g) 3114.67 ± 558.19 3203.16 ± 604.89 −0.800 .423
Laboratory test results within postpartum 24 h
 D-dimer (mg/L) 8.91 ± 6.16 4.55 ± 4.31 3.870 .001
 Fibrinogen (g/L) 4.37 ± 0.85 4.63 ± 0.81 −1.706 .088
 Platelet count (10^9/L) 172.00 ± 40.50 187.82 ± 53.53 −1.590 .112