Influence of night duty on endoscopic therapy for bile duct stones

Table 5 Comparison of treatment outcomes for each endoscopist n (%)

	ND Group	DD Group	P value
Endoscopist A
n	5	11
Procedure time (min), median ± SD	90.0 ± 80.8	90.0 ± 39.7	0.910
Rate of stone removal	3 (60.0)	6 (54.5)	0.635
Procedure success rate	5 (100)	9 (81.8)	0.458
Endoscopist B
n	7	17
Procedure time (min), median ± SD	40.0 ± 20.4	50.0 ± 26.0	0.589
Rate of stone removal	5 (71.4)	11 (64.7)	0.572
Procedure success rate	5 (71.4)	12 (70.6)	0.607
Endoscopist C
n	8	21
Procedure time (min), median ± SD	75.0 ± 39.6	50.0 ± 27.1	0.113
Rate of stone removal	3 (37.5)	7 (33.3)	0.745
Procedure success rate	4 (50.0)	10 (47.6)	0.617
Endoscopist D
n	5	16
Procedure time (min), median ± SD	60 ± 31.5	40 ± 14.7	0.017
Rate of stone removal	1 (20)	8 (50)	0.258
Procedure success rate	1 (20)	10 (62.5)	0.126

ND: Night duty; DD: Day duty; Procedure success rate: Removal of stones or biliary stenting.