Table 3 Factors associated with the success of spinal anesthesia

Vertebral column length

0.77 (0.66–0.89)

< 0.001

0.73 (0.61–0.85)

< 0.001

Abdominal girth

1.13 (1.00–1.28)

0.049

1.25 (1.03–1.52)

0.022

1.03 (1.01–1.05)

0.007

1.03 (1.01–1.06)

0.022

Height

0.88 (0.81–0.96)

0.003

0.97 (0.83–1.15)

0.74

Weight

0.92 (0.85–0.98)

0.011

1.48 (0.46–4.82)

0.511

Body mass index

1.00 (0.83–1.20)

0.99

0.82 (0.62–1.08)

0.152

Weight gain

1.00 (0.87–1.14)

0.97

1.10 (0.87–1.39)

0.422