Table 2: Sociodemographic Characteristics of Study Sample (n = 1,224).
| Variables | Total Sample (%) | Variables | Total Sample (%) |
| Gender | Income (RMB/Month) | ||
| Male | 72.5 | < 2000 | 49.1 |
| Female | 27.5 | 2000-4999 | 48.7 |
| Age | 5000-10000 | 1.4 | |
| 25-60 | 40.7 | > 10000 | 0.8 |
| > 60 | 59.3 | Health Insurance | |
| Smoker Status | Worker Insurance | 51.4 | |
| Smoker | 65 | Farm Insurance | 27.9 |
| Non-Smoker | 35 | Urban Resident | 2.1 |
| Marital Status | Commercial | 10.7 | |
| Single | 1.1 | Public Insurance | 7.3 |
| Married | 90.9 | Others | 0.5 |
| Divorced | 1.6 | Employment | |
| Widowed | 6.4 | Employed | 23.5 |
| Education | Retired | 58.9 | |
| Junior High or Less | 62.5 | Unemployed | 17.6 |
| High School | 15.1 | Duration of Illness | |
| Vocational School | 8.3 | < 1 | 40.6 |
| College (2 years a) | 7.9 | 1-2 years | 54.9 |
| College Graduate | 6.2 | > 2 years | 4.5 |
| Occupation | Types of Hospital | ||
| Professionals | 45 | Local Hospital | 9.4 |
| Retailer | 3.3 | Major Urban Hospital | 55.3 |
| Non-agricultural workers | 21.1 | Special Hospital | 35 |
| Non-farm workers | 7.9 | Others | 0.6 |
| Farmers | 16.2 | ||
| Other | 6.7 | ||
| a US$ = 6.23 RMB in 2015 |