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Table 2 Comparison of two groups

From: Comparison of radiological changes after single- position versus dual- position for lateral interbody fusion and pedicle screw fixation

CharacteristicDP groupSP groupp-value
No. of patients2619
Age (years)70.9 ± 8.172.1 ± 8.50.679
Sex (M, F)18: 811: 80.438
No. of fusion segments1.6 ± 0.81.4 ± 0.70.412
One-level1413 
Two-levels104 
Three-levels12 
Four-levels10 
No. of fusion spine levels41270.083
L1–2 No. of fusion spine levels21 
L2–3 No. of fusion spine levels72 
L3–4 No. of fusion spine levels157 
L4–5 No. of fusion spine levels1717 
Blood loss (ml)65.3 ± 70.242.2 ± 40.50.144
Pre-ope Hb (g/dl)13.6 ± 1.814.0 ± 1.10.441
First-post-ope Hb (g/dl)11.7 ± 2.012.1 ± 1.70.414
Change in Hb preope to first post ope (g/dl)−1.9 ± 1.0−1.9 ± 1.10.982
Time in operating room (min)129.7 + 36.098.4 + 41.3< 0.01
Length of stay (days)16.6 + 4.416.2 + 4.60.835
  1. All values are in mean ± standard deviation
  2. DP dual position, SP single position
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