Table 3

Results of multilevel analysis for leptospirosis in slaughterhouse workers

VariableOR (95% CI)p ValueVIF
Individual factors
Age1.0 (0.9 to 1.0)0.0641.190
Job in the slaughterhouse
 SlaughtermanRef
 Cleaner1.3 (0.4 to 4.8)0.6771.534
 Cleans offal5.1 (1.8 to 15.0)0.0032.015
 Flayer1.4 (0.6 to 3.1)0.4682.470
Wounds3.1 (1.5 to 6.1)0.0011.054
Smoking1.8 (1.1 to 2.9)0.0241.049
Eating2.1 (1.2 to 3.6)0.0101.137
HIV positive0.3 (0.1 to 0.9)0.0311.035
Private borehole2.3 (1.1 to 4.7)0.0301.069
Visited a clinic in past 3 months0.5 (0.3 to 1.0)0.0651.041
Worker reports antemortem inspection performed0.6 (0.4 to 1.0)0.0321.103
Contact with pigs outside work0.6 (0.4 to 1.1)00861.087
Slaughterhouse level factors
Slaughterhouse has a roof2.6 (1.2 to 5.6)0.0151.236
Water source
 BoreholeRef
 Municipal water1.3 (0.6 to 2.6)0.5121.191
 Well/spring2.2 (1.2 to 4.0)0.0071.172
 River1.9 (0.8 to 4.5)0.1361.177
Workers wear protective apron in slaughterhouse0.4 (0.2 to 0.7)0.0011.242