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Table 1 Demographic characteristics of the sample and SMS prevalence

From: Socioeconomic inequalities and mental stress in individual and regional level: a twenty one cities study in China

Group N % of sample Prevalence (%) Rao-Scott Chi-Square P
Age (years)     0.15 0.9977
<25 3010 15.0 26.4   
25-34 4394 20.7 25.9   
35-44 3883 19.7 25.5   
45-54 2755 19.5 27.3   
55+ 2824 25.0 26.2   
Ethnicity     0.26 0.6098
Han 15203 91.9 26.5   
Other 1663 8.1 22.7   
Gender     6.83 0.0089
Male 8795 46.9 32.8   
Female 8071 53.1 20.4   
Education     12.97 0.0047
Elementary school or less 1899 10.7 48.4   
Junior high school 5213 27.0 29.8   
High school 4914 31.0 19.1.   
Junior college or more 4840 11.3 22.6   
Occupation     26.07 0.0002
Managers and clerks 1553 7.5 61.7   
Professionals 1291 6.2 40.5   
Commerce and service 2914 15.7 26.9   
Operations 2344 23.8 22.4   
Students 1541 8.1 29.5   
Retired 2286 21.1 17.4   
Other 4932 28.6 20.7   
Income/person/year Yuan*     111.87 <0.0001
<10,000 3818 21.6 43.4   
10,000-19,999 5090 27.2 33.3   
20,000-29,999 3677 21.2 18.8   
30,000-39,999 1754 12.2 10.8   
40,000-49,999 1157 8.2 11.4   
50,000+ 1370 9.8 16.4   
Region variance      
Region location     0.73 0.6939
East 6469 49.8 23.1   
Central 2566 10.6 26.2   
West 7831 39.6 30.3   
GDP     16.25 0.0003
<40,000 7713 39.0 36.1   
40,000-59,999 3944 26.1 30.4   
60,000+ 5209 34.8 12.1   
Population(million)     7.20 0.0275
<5 7026 22.0 23.6   
5- 5960 30.8 28.4   
10 - 3880 46.9 16.6   
  1. *1Chinese yuan = $6.5.