Table 6.

Comparisons of abdominal VAS scores of patients before and after ERCP between two groups [point(s)].

Group	Cases	Before ERCP	3 h after ERCP	12 h after ERCP	24 h after ERCP
Control group	72	1.15±0.54	3.68±0.75*	3.26±0.63*	2.94±0.56*
Observation group	67	1.16±0.53	2.79±0.63*	2.52±0.52*	2.29±0.48*
P		0.913	<0.001	<0.001	<0.001

Compared with that before ERCP,

^*P<0.05.