Table 4.

Perioperative and postoperative outcomes of supervised vs independent cases

	First 10 cases for each surgeon/supervised (n = 30)	Independent cases (n = 52)	p value
Procedure
• Anterior resection	27 (90%)	45 (87%)	.645c
• Abdominoperineal excision	3 (10%)	7 (14%)
Conversion to open	0	0
Mean operative time in minutes (SD)	311 (55) (n = 20)	275 (65) (n = 39)	.038 t
Median blood loss in ml (IQR)	20 (20–20)	20 (20–20)	.726m
Median length of stay in days (IQR)	5 (4–8)	5 (4–8)	.942m
30-day readmission	1 (3%)	2 (4%)	1.000f
30-day reoperation	2 (7%)	3 (6%)	1.000f
Anastomotic leak	0	0
30-day mortality	0	0
Lymph node yield (IQR)	22 (17–31)	20 (15–30)	.508m
R0	30 (100%)	51 (98%)	1.000f

c, chi square; t, t test; m, Mann-Whitney U; f, Fisher’s exact test

Italic entry is statistically significant