4 shows a clear trend: Most pain events occurred in the measurement episode at home, with more frequent occurrences of pain in the PWI group than in the US-ILIHB group.
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Ultrasound-guided ilioinguinal-iliohypogastric block (ILIHB) or perifocal wound infiltration (PWI) in children: a prospective randomized comparison of analgesia quality, a pilot study.
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The sentences
Within the episodes ( p = 0.000) and measurement times ( p = 0.001), and between groups ( p = 0.009) being highly significant.