Skip to main content

Table 1 Demographic characteristics of the study population

From: Morphofunctional cardiac changes in singleton and twin pregnancies: a longitudinal cohort study

  Singleton pregnancy Twin pregnancy P-value
No. of women 44 22  
Nulliparous women 21 (48%) 14 (64%) 0.222
Age (year) 32.2 ± 4.5 31.5 ± 5.5 0.754
Pre-pregnancy BMI (kg/m2) 21.5 ± 3.4 20.1 ± 2.2 0.128
Pre-pregnancy BSA (m2) 1.54 ± 0.10 1.48 ± 0.11 0.023
Gestational week at delivery 38.8 ± 1.4 36.7 ± 1.4 < 0.001
Cesarean delivery 18 (41%) 21 (95%) < 0.001
Chorionicity
 monochorionic diamniotic   12  
 dichorionic diamniotic   10  
Newborn weight, kga 3.1 ± 0.4 4.4 ± 0.6 < 0.001
No. of testsb given in 66 women 166 83  
No. of the testsb per woman 3.8 ± 0.4 3.8 ± 0.4 1.000
Timing of the testsb
 Second trimester, weeks 25.3 ± 1.0 [42] 25.0 ± 1.0 [18] 0.202
 Third trimester, weeks 35.7 ± 2.8 [42] 35.4 ± 0.4 [21] 0.709
 PP1 (postpartum day 2–7) 3.2 ± 0.8 [41] 3.6 ± 1.1 [22] 0.171
 PP2 (postpartum day 23–39) 31.0 ± 3.9 [41] 30.8 ± 2.7 [22] 0.901
  1. Data are presented as the means ± SD. Numbers of women with tests are indicated in square brackets. a sum for twins; b tests consisted of simultaneous echocardiography and blood sampling for determination of biomarkers. BMI Body mass index, BSA Body surface area