Table 1.

Univariate analysis of cognitive dysfunction in chronic kidney disease patients undergoing peritoneal dialysis

		Number	Patients with cognitive impairment	χ2 value	P value
Age (yr)	< 60	50	13 (26.00%)	11.825	0.03
	60-79	86	35 (40.70%)
	≥ 80	64	37 (57.81%)
Sex	Female	97	46 (47.42%)	1.868	0.172
	Male	103	39 (37.86%)
Education level	Primary school or less	60	36 (60.00%)	13.816	0.001
	Junior and senior high schools	98	39 (39.80%)
	Junior college or above	42	10 (23.81%)
Per capita monthly household income	Less than 3000 yuan	37	23 (62.16%)	11.543	0.003
	3000-6000 yuan	96	43 (44.79%)
	> 6000 yuan	67	19 (28.36%)
Marital status	Unmarried	27	11 (40.74%)	23.747	< 0.001
	Married	132	43 (32.58%)
	Divorced or widowed	41	31 (75.61%)
Living condition	Living alone	57	33 (57.89%)	8.757	0.013
	Living with children	42	18 (42.86%)
	Conjugal residence	101	34 (33.66%)
Payment method	Insurance	143	36 (25.17%)	61.63	< 0.001
	Self-funded	57	49 (85.96%)
Hypertension	Yes	68	37 (45.41%)	5.982	0.014
	No	132	48 (36.36%)