Fig. 6From: Ultrasound-guided ilioinguinal-iliohypogastric block (ILIHB) or perifocal wound infiltration (PWI) in children: a prospective randomized comparison of analgesia quality, a pilot studyKaplan-Meier curve; Proportion of pain-free patients up to the first dose of a piritramide within the first 2 h after surgery, p = 0.003; b ibuprofen or paracetamol within the first 15 h at home, p = 0.078Back to article page