Study on the correlation between insomnia degree and quality of life in psychiatric outpatients in Chifeng city

Table 1 Comparison of baseline data among the three groups, n (%)

Index	Degree of insomnia			F/χ2	P value
	Mild (n = 137)	Moderate (n = 162)	Severe (n = 46)
Gender (male/female)	52 /85	61 /101	15 /31	0.462	0.794
Age (years)	43.26 ± 5.38	43.59 ± 6.36	45.11 ± 5.81	1.698	0.185
BMI (kg/m2)	24. 26 ± 3. 42	25.07 ± 3. 38	24.59 ± 3.51	2.079	0.127
Education				1.040	0.595
Junior high school and below	92 (67.15)	116 (71.60)	30 (65.22)
Above junior middle school	45 (32.85)	46 (28.40)	16 (34.78)
Marital status				1.205	0.877
Spinsterhood	18 (13.14)	26 (16.05)	8 (17.39)
Married	113 (82.48)	129 (79.63)	32 (76.09)
Other (divorced or widowed)	6 (4.38)	7 (4.32)	3 (6.52)
Occupation				4.399	0.355
Brainwork	72 (52.55)	87 (53.70)	21 (45.65)
Manual labour	51 (37.23)	49 (30.25)	16 (34.78)
Unemployed or retired	14 (10.22)	26 (16.05)	9 (19.57)
Course of disease (month)	59.42 ± 5.89	60.89 ± 5.62	60.96 ± 5.10	2.851	0.059
Smoking	21 (15.33)	28 (17.28)	10 (21.74)	1.005	0.605
Drinking	15 (10.95)	21 (12.96)	7 (15.22)	0.645	0.724
Complicated chronic disease	13 (9.49)	15 (9.26)	4 (8.69)	0.026	0.987

This table compares the continuous variables (e.g., age, body mass index, disease duration) of the three groups of patients by one-way analysis of variance (ANOVA) and the categorical variables (e.g., gender, education level, and marital status) of the three groups of patients by χ² test, and the results show that there is no statistically significant difference between the groups (P > 0.05). BMI: Body mass index.