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Table 6 Subgroup analysis for patients with scoliosis

From: Landmark-guided versus modified ultrasound-assisted Paramedian techniques in combined spinal-epidural anesthesia for elderly patients with hip fractures: a randomized controlled trial

  Landmark- guided group
n = 6
Ultrasound- assisted group
n = 6
P value 95% CI of differences (%)
First pass success, n (%) 0 (0.0%) 5 (83.3%) 0.015a (71.7, 94.9)
Number of attempts 2 [1 to 5] 1 [1 to 1] 0.022  
Number of passes 3.5 [2.75 to 12.5] 1 [1 to 1.75] 0.016  
Locating time(s) 40.0 [33.75 to 45.75] 405.0 [256.75 to 466.25] 0.004  
Puncture Time(s) 535.33 ± 185.24 272.50 ± 206.80 0.043  
Total time(s) 576.33 ± 180.21 641.17 ± 298.78 0.659  
Satisfaction; 4–5 2 (33.3%) 6 (100.0%) 0.061a (52.1, 81.3)
  1. Data are presented as mean ± SD, median [interquartile range] or n (%)
  2. Abbreviations: SD standard deviation, CI confidence interval
  3. aFisher’s exact test