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. 2024 Mar 18;14:6426. doi: 10.1038/s41598-024-57280-y

Table 3.

Demographic characteristics of the participants and 2020 Population Census.

Demographics n = 5284 (%) 2020 Population census
Gender Male 2741 (51.87) 51.24%
Female 2543 (48.13) 48.76%
Age 18–20 years 275 (5.20) Mean = 38.8 years
21–30 years 1714 (32.44)
31–40 years 1678 (31.76)
41–50 years 872 (16.50)
51–60 years 498 (9.43)
61–70 years 247 (4.67)
Education Junior middle school and below 632 (11.96) 69.44%
High school 909 (17.20) 15.09%
Junior college 2030 (38.42) 15.47%
Undergraduate 1269 (24.02)
Postgraduate 444 (8.40)
Monthly household income  < US $500 1023 (19.36) mean = US $1018.83
US $501–1000 1518 (28.73)
US $1001–1500 1670 (31.60)
US $1501–2000 707 (13.38)
 > US $2000 366 (6.93)
Area of residence Urban area 3428 (64.88) 63.89%
Rural area 1856 (35.12) 36.11%
Occupation Unemployed 298 (5.64) 4.20%
Students 895 (16.94) 18.64%
Farmers 409 (7.74) 14.69%
Self-employed 911 (17.24) 18.55%
Employed 2582 (48.86) 34.61%
Retired 189 (3.58) 9.31%
Region North China 835 (15.80) 11.99%
Northeast China 609 (11.53) 6.98%
East China 1176 (22.26) 27.35%
South Central China 1289 (24.39) 29.03%
Southwest China 854 (16.16) 14.53%
Northwest China 521 (9.86) 10.12%

Monthly household income was converted at the average exchange rate for 2020, which was CNY 6.897 per USD.