Table 3.

Univariate analysis of anxiety in emergency department observation patients (N = 32).

Independent variable	Group	Number (N)	Percentage (%)	χ2	P value
Age (years)	≤39	3	16.67	7.953	.047
	40–59	17	56.67
	60–79	9	25.71
	≥80	3	20.00
Gender	Female	9	28.13	2.472	.116
	Male	23	34.85
Marital status	Unmarried	1	14.29	0.64	.887
	Married	25	35.21
	Divorced	4	33.33
	Widowed	2	25.00
Educational level	Primary school or below	2	13.33	8.22	.042
	Junior high school	5	14.29
	Senior high school	23	60.53
	University or above	2	18.18
Occupation	Farmers or migrant workers	16	44.44	1.451	.228
	Company employees	4	25.00
	Civil servants or public institution employees	3	23.08
	Freelancers	1	16.67
	Unemployed or retired	8	28.57
Residence	Urban	27	34.18	0.173	.677
	Rural	5	26.32
Average monthly household income	<4000 CNY/month	3	15.79	3.588	.166
	4000–8000 CNY/month	25	44.64
	>8000 CNY/month	4	16.67
Medical insurance status	Self-paid	1	16.67	0.148	.700
	New rural cooperative medical scheme	5	31.25
	Urban medical insurance	23	35.94
	Employee health insurance	3	25.00
Disease type	Musculoskeletal diseases	22	61.11	7.613	.006
	Respiratory diseases	6	27.27
	Digestive system diseases	2	12.50
	Hematological diseases	0	0.00
	Circulatory system diseases	1	7.69
	Urinary system diseases	1	20.00
	Endocrine and metabolic diseases	0	0.00
	Neurological diseases	0	0.00
	Other	0	0.00
Disease awareness	Unaware	5	14.71	0.131	.717
	Somewhat aware	23	46.00
	Aware	3	27.27
	Very aware	1	20.00
Self-perceived severity of disease	Mild	2	22.22	7.443	.024
	Moderate	9	16.07
	Severe	21	61.76
Number of comorbidities	None	8	21.05	2.254	.324
	1–2	20	44.44
	≥3	4	23.53
First time under observation	Yes	14	38.89	0.369	.544
	No	18	29.03
Observation duration (hours)	≤12.00	1	12.50	0.184	.668
	12.01–24.00	16	32.65
	24.01–36.00	7	46.67
	36.01–48.00	3	33.33
	48.01–60.00	2	33.33
	60.01–72.00	2	28.57
	>72.00	1	25.00