Fig. 4From: Comparison of anesthetic effects of different doses of alfentanil combined with ciprofol in elderly patients undergoing ERCP: a randomized controlled trialComparison of operation time and awakening time (# showed that there were no statistical differences among the three groups, P > 0.05;*showed that the comparison with the group A and group B had statistical differences,(P < 0.05); **showed that the comparison with the group B and group C had statistical differences, (P < 0.05))Back to article page