Fig. 2From: Effects of an individualized analgesia protocol on the need for medical interventions after adenotonsillectomy in children: a randomized controlled trialSurvival curves of CHEOPS scores> 6. The probability of CHEOPS scores> 6 for all patients in the IP and CP groups, P < 0.001 (a). For the patients with positive results, P = 0.253 (b). For the patients with negative results, P < 0.001 (c). IP, individualized protocol; CP, conservative protocol; CHEOPS, Children’s Hospital of Eastern Ontario Pain ScaleBack to article page