Table 6.
Severity of symptoms’ characteristics according to selected sociodemographic variables for all participants
| Characteristics | Asymptomatic | Mild symptoms | Overt symptoms | |
|---|---|---|---|---|
| Population groups (male:%) | Normal control (39.8%) | 84.0% | 82.8% | 89.1% |
| Esophagitis (45.8%) | 11.0% | 11.9% | 5.9% | |
| LGIN (47.0%) | 4.0% | 4.5% | 3.8% | |
| HGIN and ESCC (52.7%) | 1.0% | 0.8% | 1.2% | |
| Age | 40–50 | 30.3% | 33.5% | 25.9% |
| 51–60 | 43.1% | 43.0% | 40.5% | |
| 61–69 | 26.6% | 23.5% | 33.6% | |
| Gender | Male | 41.9% | 38.5% | 36.6% |
| Female | 58.1% | 61.5% | 63.4% | |
| Education | Never been to school | 15.0% | 13.8% | 25.5% |
| Primary school | 35.0% | 38.4% | 33.6% | |
| Middle school | 39.0% | 38.4% | 29.4% | |
| High school and above | 11.0% | 9.4% | 11.5% | |
| BMI | < 18.5 | 1.8% | 1.8% | 4.0% |
| 18.5–23.9 | 46.0% | 47.8% | 51.0% | |
| 24.0–27.0 | 40.1% | 39.9% | 36.4% | |
| > 27.0 | 12.1% | 10.5% | 8.7% | |
| Smoking status | Never smoked | 74.2% | 78.5% | 74.9% |
| Current smoking | 21.5% | 17.6% | 19.0% | |
| Previous smoking | 4.3% | 3.9% | 6.1% | |
| Drinking status | No alcohol consumption | 65.5% | 67.9% | 70.6% |
| < 1 time/week | 24.6% | 26.0% | 25.7% | |
| ≥1 time/week | 9.9% | 6.1% | 3.8% | |
Note: LGIN low-grade intraepithelial neoplasia, HGIN high-grade intraepithelial neoplasia, ESCC esophageal squamous cell carcinoma, BMI body mass index