|
Determinants
|
N
|
Seroprevalence (%)a
|
Crude ORb
|
[95% CI]c
|
Adjusted ORb,d,e
|
[95% CI]c
|
|---|
|
Age (years)
|
|
20–30
|
50
|
10.0
|
Ref.
| |
Ref.
| |
|
30–40
|
179
|
15.1
|
1.60
|
[0.58–4.39]
|
1.49
|
[0.54–4.13]
|
|
40–50
|
432
|
19.2
|
2.14
|
[0.82–5.55]
|
2.01
|
[0.77–5.26]
|
|
50–60
|
661
|
25.1
|
3.02
|
[1.18–7.72]
|
2.58
|
[1.00–6.70]
|
|
60–70
|
938
|
37.5
|
5.40
|
[2.13–13.73]
|
4.22
|
[1.63–10.91]
|
|
> =70
|
162
|
38.3
|
5.58
|
[2.10–14.80]
|
4.15
|
[1.53–11.24]
|
|
Gender
|
|
Female
|
1,318
|
25.6
|
Ref.
| |
Ref.
| |
|
Male
|
1,104
|
32.3
|
1.39
|
[1.16–1.65]
|
1.21
|
[1.00–1.47]
|
|
Educational level
|
|
High
|
733
|
24.8
|
Ref.
| |
Ref.
| |
|
Medium
|
1,080
|
26.9
|
1.12
|
[0.90–1.38]
|
1.10
|
[0.87–1.38]
|
|
Low
|
609
|
36.5
|
1.74
|
[1.37–2.20]
|
1.36
|
[1.04–1.76]
|
|
Diet without pork meat
|
|
No
|
2,360
|
28.8
|
Ref.
| |
Ref.
| |
|
Yes
|
47
|
19.2
|
0.59
|
[0.28–1.22]
|
0.72
|
[0.33–1.59]
|
|
Missing
|
15
| | | | | |
|
Ever smoked
|
|
No
|
1,034
|
26.5
|
Ref.
| |
Ref.
| |
|
Yes
|
1,388
|
30.3
|
1.21
|
[1.01–1.45]
|
0.96
|
[0.79–1.17]
|
|
Childhood in study region
|
|
No
|
580
|
32.2
|
Ref.
| |
Ref.
| |
|
Yes
|
1,816
|
27.4
|
0.79
|
[0.65–0.97]
|
0.85
|
[0.68–1.07]
|
|
Missing
|
26
| | | | | |
|
Childhood on pig farm
|
|
No
|
1,928
|
27.6
|
Ref.
| |
Ref.
| |
|
Yes
|
468
|
32.5
|
1.26
|
[1.02–1.57]
|
1.21
|
[0.94–1.55]
|
|
Missing
|
26
| | | | | |
|
Performed jobs on farm during childhood
|
|
No
|
1,090
|
26.9
|
Ref.
|
-
|
Ref.
| |
|
Yes
|
1,220
|
29.7
|
1.15
|
[0.96–1.38]
|
1.02
|
[0.83–1.27]
|
|
Missing
|
112
| | | | | |
|
Number of pigs within 1000 m of residential address (tertiles)
|
|
Lowf
|
807
|
32.1
|
Ref.
| |
Ref.
| |
|
Intermediateg
|
808
|
26.9
|
0.78
|
[0.63–0.96]
|
0.79
|
[0.63–0.99]
|
|
Highh
|
807
|
27.1
|
0.79
|
[0.64–0.98]
|
0.83
|
[0.66–1.04]
|
-
aIncluding both positive and borderline samples (anti-HEV IgG ratio > = 0.90)
-
bOdds Ratio
-
c95% Confidence Interval
-
dORs are adjusted for age, gender, educational level, diet without pork meat, ever smoked, childhood in study region, childhood on pig farm, jobs on farm during childhood and number of pigs within 1000 m of residential address
-
eAdjusted ORs and 95% CIs were calculated for cases without missing answers (N = 2,301)
-
fNumber of pigs within 1000 m < = 1,003
-
gNumber of pigs within 1000 m > 1,003 and < = 5,771
-
hNumber of pigs within 1000 m > 5,771
