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Table 3 Operation time, postoperative stay, and re-operation of trial patients and non-randomised patients

From: Non-randomised patients in a cholecystectomy trial: characteristics, procedures, and outcomes

  N Operation time, min Postoperative stay, days Re-operation Re-admitted within 30 days
   Mean SD Mean Median Percentiles   N % N %
       25% 75%     
Trial patients 724 101 45 2.6 2 1 3 17 2.3 47 6.5
Non-randomised patients 993 100 47 4.9 3 2 6 23 2.3 60 6.1
   p = 0.67 P < 0.001 p = 0.92 p = 0.71