Table 2.

Best-fitting model multivariate of risk factors for Toxoplasma gondii seropositivity.

Risk factors	OR (95% CI)	p-value
Region
Gafsa
Monastir	2.72 (1.49–4.94)	0.0011
Age (years)
18–25
26–35	4.98 (1.50–16.58)	0.0089
36–45	0.44 (0.15–1.30)	0.1363
>45	0.71 (0.21–2.43)	0.5861
Residence area
Rural
Urban	0.30 (0.13–0.71)	0.0064
Hand washing before eating
No
Yes	0.52 (0.37–0.74)	0.0003
Age (years)*Region
18–25*Gafsa
18–25*Monastir
26–35*Gafsa
26–35*Monastir	0.26 (0.11–0.57)	0.0009
36–45*Gafsa
36–45*Monastir	1.14 (0.47–2.80)	0.7714
>45*Gafsa
>45*Monastir	0.99 (0.33–2.97)	0.9797
Age (years)*Residence area
18–25*Rural
18–25*Urban
26–35*Rural
26–35*Urban	1.17 (0.32–4.22)	0.8107
36–45*Rural
36–45*Urban	2.90 (0.87–9.66)	0.0832
>45*Rural
>45*Urban	5.31 (1.33–21.27)	0.0184

OR, odds ratio; CI, confidence interval.

*: interaction between significant variables.

Hosmer–Lemeshow χ ² = 1.50, p = 0.959, receiver-operating characteristic curve (ROC) = 0.69.