|
Risk factor
|
Post-primary
|
|---|
|
OR
|
95% CI
|
p value
|
|---|
|
Age
|
|
< 5
|
1
| | |
|
6–15
|
1.69
|
1.46–1.96
|
< 0.001
|
|
16–30
|
1.80
|
1.53–2.11
|
< 0.001
|
|
> 31
|
1.91
|
1.54–2.38
|
< 0.001
|
|
Sex
|
|
Female
|
1
| | |
|
Male
|
0.94
|
0.85–1.04
|
0.248
|
|
Disease day
|
|
1–2
|
1
| | |
|
3–4
|
1.06
|
0.94–1.19
|
0.377
|
|
5
|
1.00
|
0.84–1.19
|
0.973
|
|
Clinical manifestation
|
|
No warning signs
|
1
| | |
|
Warning signs
|
1.47
|
1.28–1.70
|
< 0.001
|
|
Severe
|
1.66
|
1.28–2.16
|
< 0.001
|
|
Non-disclosed
|
0.90
|
0.76–1.07
|
0.227
|
|
DRU elevation (metres)
|
|
0–75
|
1
| | |
|
75–150
|
0.81
|
0.67–0.97
|
0.023
|
|
150+
|
0.61
|
0.52–0.72
|
< 0.001
|
|
DRU pop den (km2)
|
|
0–100
|
1
| | |
|
100–200
|
0.87
|
0.77–0.97
|
0.017
|
|
200+
|
1.32
|
1.14–1.53
|
< 0.001
|
- OR unadjusted odds ratio, Pop den population density, DRU disease-reporting unit
