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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