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Table 1 Clinical characteristics of term parturients

From: A prediction model using machine-learning algorithm for assessing intrathecal hyperbaric bupivacaine dose during cesarean section

  Overall Appropriate block Inappropriate block P value
No. pts. (%) 684 516 (75.44%) 168 (24.56%)
Age, yrs 30.7 ± 4.5 30.7 ± 4.5 30.8 ± 4.6 0.717
Weight, kg 69.5 ± 9.6 69.1 ± 9.4 71.0 ± 10.1 0.022
Height, cm 159.3 ± 4.7 159.4 ± 4.6 159.1 ± 4.8 0.405
Vertebral column length, cm 56.6 ± 3.2 56.7 ± 3.0 56.4 ± 3.8 0.323
Abdominal girth, cm 99.9 ± 7.1 99.5 ± 6.9 101.2 ± 7.7 0.007
Fundal height, cm 35.2 ± 2.8 35.2 ± 2.9 35.2 ± 2.6 0.789
Fetal biparietal diameter, cm 9.1 ± 0.5 9.1 ± 0.5 9.2 ± 0.4 0.076
Fetal weight, kg 3.3 ± 0.7 3.4 ± 0.7 3.4 ± 0.6 0.445
Bupivacaine dosage, mL 2.0 ± 0.2 2.0 ± 0.2 2.0 ± 0.1 0.057