Table 2 Socio-demographic characteristics of the sample (n = 163)
Items | Case load(n) | Constituent ratio(%) | Items | Case load(n) | Constituent ratio(%) |
|---|---|---|---|---|---|
gender | Â | Â | nation | Â | Â |
 male | 74 | 45.4 | han nationality | 162 | 99.4 |
 female | 89 | 54.6 | other | 1 | 0.6 |
age | Â | Â | Family economic status | Â | Â |
 20–40 | 29 | 17.8 | poor | 49 | 30.1 |
 40–60 | 88 | 54.0 | medium | 101 | 62.0 |
  ≥ 60 | 46 | 28.2 | good | 13 | 8.0 |
degree of education | Â | Â | medical form | Â | Â |
 primary school | 50 | 30.7 | self-supporting | 9 | 5.5 |
 junior high school | 55 | 33.7 | Social medical insurance (urban and worker health insurance) | 107 | 65.6 |
 High school or technical secondary school | 38 | 23.3 | commercial health insurance | 6 | 3.7 |
 junior college | 12 | 7.4 | cooperative medical care | 36 | 22.1 |
 bachelor degree or above | 8 | 4.9 | missing data | 5 | 3.1 |
occupation | Â | Â | clinical diagnosis | Â | Â |
 worker | 24 | 14.7 | superficial type | 52 | 31.9 |
 farmer | 59 | 36.2 | the superficial type with erosion type | 33 | 20.2 |
 teacher | 9 | 5.5 | flat erosion | 67 | 41.1 |
 cadre | 11 | 6.7 | bile reflux type | 3 | 1.8 |
 private ownership | 17 | 10.4 | complex style | 1 | 0.6 |
 other | 43 | 26.4 | missing data | 7 | 4.3 |
marriage status | Â | Â | clinical stages | Â | Â |
 unmarried | 7 | 4.3 | asymptomatic period | 4 | 2.5 |
 married | 148 | 90.8 | symptom phase | 155 | 95.1 |
 divorced | 3 | 1.8 | missing data | 4 | 2.5 |
 widowed | 5 | 3.1 |  |  |  |