Table 2.

Summary of chi‐square test for delirium and the associated risk factors (n = 153).

Characteristics	Category	Delirium		Chi-Square
		No (F)	Yes (F)	χ 2	p value
Gender	Male	77	21	3.14	0.087
	Female	36	19
Smoking	No	93	35	0.58	0.454
	Yes	20	5
Emergency surgery or trauma	No	101	34	0.55	0.460
	Yes	12	6
Sepsis	No	108	32	9.22	0.002
	Yes	5	8
Ventilator use	No	41	3	11.95	0.001
	Yes	72	37
Metabolic acidosis	No	75	13	13.87	<0.01
	Yes	38	27
Bladder catheter use	No	20	0	8.14	0.004
	Yes	93	40
Nasogastric tube use	No	91	13	31.30	<0.01
	Yes	22	27

χ ² = Pearson chi-square value, p = significance level.