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Table 2 Distribution of pre-pregnancy variables and differences associated with peripartum blood transfusion in women undergoing NHSE within one year before conception

From: Predicting peripartum blood transfusion: focusing on pre-pregnancy characteristics

 No Transfusion
436,668 (98.21%)
Transfusion
7960 (1.79%)
p-value
Waist circumference (cm) ≥ 8047,317 (10.80%)838 (10.49%)0.3695
Body mass index (kg/m2)21.05 ± 2.8721.09 ± 2.930.2
Body mass index (kg/m2) ≥ 2539,454 (9.00%)750 (9.38%)0.2428
Systolic blood pressure (mmHg)110.1 ± 10.84110.5 ± 11.24<  0.001
Diastolic blood pressure (mmHg)69.19 ± 8.1269.55 ± 8.35<  0.001
Blood pressure ≥ 130/85 (mmHg)30,349 (6.92%)664 (8.30%)<  0.001
Hemoglobin12.93 ± 1.0112.70 ± 1.19<  0.001
Fasting glucose (mg/dL)87.81 ± 11.3688.58 ± 12.54<  0.001
Fasting glucose ≥12642,380 (9.67%)900 (11.26%)<  0.001
Total cholesterol (mg/dL)176.9 ± 31.55177.2 ± 36.460.4163
Total cholesterol (mg/dL) ≥ 20087,585 (19.98%)1646 (20.59%)0.1772
AST (IU/L)19.24 ± 12.7719.48 ± 11.03<  0.05
AST (IU/L) ≥ 3018,724 (4.27%)385 (4.81%)<  0.05
ALT (IU/L)15.38 ± 16.8315.70 ± 16.730.087
ALT (IU/L) ≥ 3021,314 (4.86%)444 (5.55%)<  0.01
Smoking
 Never407,408 (93.21%)7403 (92.89%)<  0.05
 Ever15,480 (3.54%)264 (3.31%) 
 Current14,190 (3.25%)303 (3.80%) 
  1. Abbreviations: AST Aspartate aminotransferase, ALT Alanine aminotransferase