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Table 2 Comparison of two groups

From: The analysis of percutaneous pedicle screw technique with guide wire-less in lateral decubitus position following extreme lateral interbody fusion

Characteristic P group (n = 18) L group (n = 12) p value
Age (years) 69.7 ± 7.3 72.4 ± 10.2 0.305
Sex (M, F) 11, 7 6, 6 0.632
Height (cm) 160.8 ± 9.3 158.7 ± 9.5 0.662
Body weight (kg) 63.5 ± 13.1 60.9 ± 9.7 0.415
Body mass index (kg/m2) 24.6 ± 3.6 24.2 ± 3.5 0.787
Blood loss (ml) 69.0 ± 83.8 32.4 ± 35.0 0.095
Pre-ope Hb (g/dl) 13.6 ± 1.9 14.2 ± 1.1 0.439
First post-ope Hb (g/dl) 12.1 ± 2.1 12.6 ± 1.5 0.545
Change in Hb pre-ope to first post-ope (g/dl) − 1.6 ± 1.0 − 1.6 ± 0.9 0.983
Time in operating room (min) 111.9 + 25.0 77.5 + 22.2 < 0.01
Length of stay (days) 16.0 + 4.2 16.8 + 5.1 0.573
  1. All values are in mean ± standard deviation
  2. pre-ope preoperative, post-ope postoperative