Table 1.

Variable description.

Variable	Description of variable setting	Mean	Standard deviation
Age	0–49 = 1, 50–59 = 2, 60–69 = 3, 70, or more = 4	2.75	1.124
Gender	Male = 1, Female = 2	1.54	0.498
BMI	Underweight (BMI < 18.5) = 1, Normal (18.5 ≤ BMI < 24) = 2, Overweight (BMI ≥ 24) = 3	1.21	0.668
Marital status	Unmarried/Divorced/Widowed = 1, Married = 2	1.82	0.384
Education level	Below junior high school education = 1, Junior high school, and above = 2	1.30	0.460
Income level	0–999 = 1, 1000–1999 = 2, 2000–2999 = 3, 3000, and more = 4	2.46	1.221
Health insurance	Urban residents basic health insurance = 1, Urban workers basic health insurance = 2, New rural cooperative health insurance = 3, Others = 4	2.11	0.978
Health file	Yes = 1, No = 2, Unknown = 3	2.02	0.707
Drug accessibility	Can medicines needed be purchased in public medical and health institutions? Very inconsistent 1-2-3-4-5 Very consistent	4.33	0.902
OOP level	Do you think the cost of medicine is heavy? Very heavy 1-2-3-4-5 Very light	2.66	1.196
Chronic disease	Monopathy = 1, Multimorbidity = 2	1.17	0.378
Province	Gansu = 1, Hebei = 2, Sichuan = 3, Tianjin = 4, Zhejiang = 5	2.71	1.503
Mobility	Extremely difficulty 1-2-3-4-5 No difficulty	0.63	0.483
Self care	Extremely difficulty 1-2-3-4-5 No difficulty	0.66	0.475
Usual activities	Extremely difficulty 1-2-3-4-5 No difficulty	0.62	0.485
Pain or discomfort	Extremely difficulty 1-2-3-4-5 No difficulty	0.32	0.467
Anxiety or depression	Extremely difficulty 1-2-3-4-5 No difficulty	0.41	0.493
Utility	Calculated based on EQ-5D-5L and its newly developed Chinese value set, the maximum value is 1, the minimum value is −0.391.	0.727	0.345