Table 2.

Bivariate associations between viable cyst infection in pigs and selected household and pig-level risk factors (n = 326 pigs)

	N (% of total)	Number positive (≥ 1 viable cyst)	Prevalence ratio of viable cyst infection (95% CI)	P-value
Distance to nearest tapeworm carrier
Carrier’s home	10 (3%)	7 (70.0%)	155.4 (21.2, 1,140)	< 0.001
2–500 m	94 (29%)	10 (10.6%)	23.6 (2.94, 189)	0.003
> 500 m	222 (68%)	1 (0.5%)	Ref.	–
Alternative distance categorization
< 50 m	15 (5%)	8 (53.3%)	118 (15.1, 930)	< 0.001
50–500 m	89 (27%)	9 (10.1%)	22.4 (2.8, 183)	0.004
> 500 m	222 (68%)	1 (0.5%)	Ref.	–
Degenerated cyst infection
Yes	31 (10%)	10 (32.3%)	11.9 (5.47, 25.8)	< 0.001
No	295 (90%)	8 (2.7%)	Ref.	–
Pig sex
Male	147 (55%)	5 (3.4%)	0.47 (0.16, 1.33)	0.15
Female	179 (45%)	13 (7.3%)	Ref.	–
Geographic density (houses within 100 m)
≥ 2	65 (20%)	11 (16.9%)	6.31 (1.30, 30.7)	0.022
0–1	261 (80%)	7 (2.7%)	Ref.	–
Number of pigs in household
1–5	60 (18%)	4 (6.7%)	1.27 (0.34, 4.69)	0.72
> 5	266 (82%)	14 (5.3%)	Ref.	–
Sanitation
Open field defecation	195 (60%)	12 (6.2%)	1.31 (0.32, 5.33)	0.71
Latrine	128 (40%)	6 (4.7%)	Ref.	–
Pig age, per additional month	–	–	1.03 (1.01, 1.06)	0.009