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Table 3 Association between Tibetan pig characteristics and Aujeszky’s disease virus serological status with corresponding chi square (χ2), p-value, odds ratio (OR), and confidence interval (CI)

From: Seroprevalence and risk factors associated with Pseudorabies virus infection in Tibetan pigs in Tibet

Characteristic No. tested Positive 95% CI MH Chi-sq P value OR/reciprocal
N %
Age
Juveniles 124 15 12.10 6.9–19.2 P = 0.229
Sub-adults 96 17 17.71 10.7–26.8
Adults 148 26 17.57 11.8–24.7
Sex
Male 178 26 14.61 9.8–20.7 0.84/ 1.18
Female 190 32 16.84 11.8–22.9
Feed type
Free-ranging 154 23 14.94 9.7–21.6 0.90 / 1.11
Large-scale 214 35 16.36 11.7–22.0
Altitude
3700 m 135 15 11.11 6.4–17.7 P = 0.027
3200 m 121 19 15.70 9.7–23.4
2800 m 112 24 21.43 14.2–30.2