Table 5 Univariable regression analysis of potential risk factors for the presence of EEHV antibodies in elephants sampled throughout Thailand between 2010 and 2015 (n = 994) based on an EEHV1A glycoprotein B protein antigen specific ELISA
Potential risk factors | Prevalence (%) | p-Value | OR | 95% CI |
|---|---|---|---|---|
Sex | ||||
Female (n = 678) | 40.2 | Ref | 1 | NA |
Male (n = 316) | 46.5 | 0.06 | 1.29 | 0.98–1.68 |
Age category (year) | ||||
< 10 (n = 73) | 43.8 | Ref | 1 | NA |
10–50 (n = 797) | 41.5 | 0.70 | 0.91 | 0.56–1.48 |
> 50 (n = 124) | 45.9 | 0.77 | 1.09 | 0.61–1.95 |
Management type | ||||
Extensive (n = 505) | 47.1 | Ref | 1 | NA |
Intensive (n = 489) | 37.2 | 0.00 | 0.66 | 0.51–0.85 |
Region | ||||
North (n = 435) | 49.4 | Ref | 1 | NA |
Central (n = 76) | 22.4 | < 0.00 | 0.29 | 0.16–0.51 |
East (n = 207) | 37.7 | 0.00 | 0.61 | 0.44–0.86 |
Northeast (n = 62) | 33.9 | 0.02 | 0.52 | 0.29–0.90 |
South (n = 82) | 43.9 | 0.36 | 0.80 | 0.49–1.28 |
West (n = 132) | 40.2 | 0.06 | 0.68 | 0.46–1.01 |
Camp clustera | ||||
< 10 (n = 19) | 57.9 | Ref | 1 | NA |
10–50 (n = 372) | 44.0 | 0.24 | 0.57 | 0.21–1.44 |
> 50 (n = 603) | 40.6 | 0.13 | 0.49 | 0.19–1.24 |
Evaluation period | ||||
Apr-Oct (n = 824) | 40.9 | Ref | 1 | NA |
Nov-Mar (n = 170) | 48.8 | 0.37 | 1.24 | 0.76–2.01 |