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Table 4 Interspinous level of successful puncture and block level

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 = 40
Ultrasound- assisted group
n = 40
P value
Interspace level of successful puncture n (%) 0.036
 L2/L3 10 (25%) 19 (47.5%)  
 L3/L4 30 (75%) 21 (52.5%)  
Peak dermatome level n (%) 0.251
 T8 13 (32.5%) 18 (45%)  
 T10 27 (67.5%) 22 (55%)  
  1. Data are presented as n (%)