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Table 2 Comparisons of anal pressures before and after assigned treatment.

From: Botulinum toxin injection versus lateral internal sphincterotomy in the treatment of chronic anal fissure: a non-randomized controlled trial

Maximal resting pressure (mmHg) Maximal squeeze pressure (mmHg)
Groups Before treatment After treatment P Before treatment After treatment P
BT 101 ± 23 83 ± 24 <0.05 117 ± 62 76 ± 34 <0.01
LIS 104 ± 22 86 ± 15 <0.05 70 ± 27 61 ± 32 >0.05
  1. BT = Botulinum toxin injection. LIS = Lateral internal sphincterotomy. p > 0.05 for the comparisons between the two groups (BT vs. LIS).