Caudal bupivacaine supplemented with caudal or intravenous clonidine in children undergoing hypospadias repair: a double-blind study T.G. Hansen, S.W. Henneberg, S Walther-Larsen, J Lund, M Hansen British Journal of Anaesthesia Volume 92, Issue 2, Pages 223-227 (February 2004) DOI: 10.1093/bja/aeh028 Copyright © 2004 British Journal of Anaesthesia Terms and Conditions
Fig 1 Kaplan–Meier plot showing the percentages of children from the two groups who did not require any morphine for postoperative pain relief over time. The difference between groups was not statistically significant (log rank test, P=0.45). British Journal of Anaesthesia 2004 92, 223-227DOI: (10.1093/bja/aeh028) Copyright © 2004 British Journal of Anaesthesia Terms and Conditions