Fig. 6From: Effect of Dexmedetomidine combined with sufentanil for post- thoracotomy intravenous analgesia:a randomized, controlled clinical studyPatients’ overall postoperative satisfaction rating with 48 h (control group vs dexmedetomidine group). The satisfaction score was assessed using a 4-point scale (not satisfied, moderately satisfied, satisfied, very satisfied). The four categories (N = 180, Mean Rank was 146.3 vs 214.7, x 2 = 41.8, df = 1, P = 0.000)Back to article page