Table 2.
Frequency of anti-HEV IgG EIA reactivity associated with educational level, occupation and region of the participants in the Korea National Health and Nutrition Examination Survey, 2007–2009
| Variable | Testeda | Positive for anti-HEV, N (%) | Pvalueb | OR (95% CI) |
|---|---|---|---|---|
| Educational levelc | ||||
| Elementary school or below | 132 | 27 (20.5) | <.0001 | 1.0 |
| Middle school graduate | 152 | 23 (15.1) | 0.7 (0.4-1.3) | |
| High school graduate | 621 | 56 (9.0) | 0.4 (0.2-0.6) | |
| University graduate | 473 | 31 (6.6) | 0.3 (0.2-0.5) | |
| Occupation | ||||
| Managers, Professionals | 295 | 19 (6.4) | <.0001 | 1.0 |
| Clerks | 234 | 14 (6.0) | 0.9 (0.5-1.9) | |
| Service provider and Seller | 357 | 26 (7.3) | 1.1 (0.6-2.1) | |
| Skilled Agricultural, Forestry and Fishery Workers | 48 | 15 (31.3) | 6.6 (3.1-14.2) | |
| Equipment, Machine Operators and Manufacturing Workers | 230 | 20 (8.7) | 1.4 (0.7-2.7) | |
| Elementary Workers | 151 | 20 (13.3) | 2.2 (1.1-4.3) | |
| Unemployed (housewife, student, etc.) | 819 | 29 (3.5) | 0.5 (0.3-0.9) | |
| Residence | ||||
| Urban area | 1,937 | 90 (4.7) | <.0001 | 1.0 |
| Rural area | 513 | 54 (10.5) | 0.4 (0.3-0.6) | |
| Region of residence | ||||
| Coastal area | 1,064 | 90 (8.5) | <.0001 | 1.0 |
| Inland area | 1,386 | 54 (3.9) | 2.4 (1.7-3.4) |
aThe total no. of participants shown is <2,450, owing to deficient reporting.
bIf P < 0.05, the differences of seroprevalence among compared groups are statistically significant.
cThe seovprevalence of individuals over the age of 10 years old were used for this data.