Table 3.

Multivariate logistic regression analysis of influencing factors of preoperative hypokalemia in gastrointestinal surgery

	Grouping	b value	b value standard error	Wald value	OR value (95% CI)	p value
ALT(U/L)		-0.04	0.02	3.52	0.96(0.93 to 1.00)	0.061
BUN(mmol/L)		-0.12	0.07	3.30	0.89(0.78 to 1.00)	0.069
ACEI or ARB[n(%)]	Group N Group H	-2.48	0.99	6.29	0.08(0.01 to 0.58)	0.012
Thiazide diuretic [n(%)]	Group N Group H	2.12	0.94	5.05	8.31(1.31 to 52.68)	0.025
Inability to eat or intestinal obstruction [n(%)]	Group N Group H	2.89	1.08	7.14	17.96(2.16 to 149.43)	0.008
Vomiting a [n(%)]	Group N Group H	-0.35	0.81	0.192	0.70(0.14 to 3.42)	0.662
Diarrheab [n(%)]	Group N Group H	1.83	0.85	4.65	6.21(1.18 to 32.61)	0.031
Hypokalemia on admission [n(%)]	Group N Group H	2.19	1.10	4.00	8.97(1.05 to 77.04)	0.046

^a Vomiting for more than 48 h;

^b Diarrhea for more than 48 h;

Group H, Hypokalemia group; Group N, Normokalemia group;

ALT, glutamic pyruvic transaminase; BUN, blood urea nitrogen; ACEI, angiotensin converting enzyme inhibitors; ARB, angiotensin receptor antagonist;