Variables | Seropositive n = 40 (%) | Seronegative n = 104 (%) | OR (95 % CI)a | P Value |
---|---|---|---|---|
State Location | Â | Â | Â | Â |
   Lagos | 4 (10) | 27 (26) | Ref |  |
   Ondo | 4 (10) | 16 (15) | 1.7 (0.3; 10.3) | 0.76 |
   Ekiti | 4 (10) | 13 (12.5) | 2.1 (0.3; 12.9) | 0.58 |
   Osun | 5 (12.5) | 19 (18) | 1.8 (0.3; 10.1) | 0.67 |
   Oyo | 6 (15) | 16 (15) | 2.5 (0.5; 13.9) | 0.34 |
   Ogun | 17 (42.5) | 13 (12.5) | 8.8 (2.2; 41.8) | 0.001 |
Total No. of pigs on farm | Â | Â | Â | Â |
   Large holder farms (101 – 567) | 7 (17.5) | 19 (18) | Ref |  |
   Medium holder farms (51 – 100) | 8 (20) | 30 (29) | 0.7 (0.2; 2.8) | 0.80 |
   Small holder farms (<= 50) | 25 (62.5) | 55 (53) | 1.2 (0.4; 3.9) | 0.88 |
Season | Â | Â | Â | Â |
   Dry | 21 (52.5) | 18 (17) | 5.3 (2.2; 12.7) | 0.00 |
   Rainy | 19 (47.5) | 86 (83) |  |  |
Having slaughter slabs within 1Â km radius of the farm | Â | Â | Â | Â |
   Yes | 5 (12.5) | 23 (22) | 0.5 (0.1; 1.5) | 0.28 |
   No | 35 (87.5) | 81 (78) |  |  |
Having rubbish heap within 1Â km radius of the farm | Â | Â | Â | Â |
   Yes | 29 (72.5) | 64 (61.5) | 1.6 (0.7; 4.1) | 0.30 |
   No | 11 (27.5) | 40 (38.5) |  |  |
Having a quarantine/isolation unit within 100Â m radius of the regular pen | Â | Â | Â | Â |
   Yes | 13 (32.5) | 13 (12.5) | 3.3 (1.3; 8.9) | 0.01 |
   No | 27 (67.5) | 91 (87.5) |  |  |
Farm workers having designated working clothes | Â | Â | Â | Â |
   Yes | 28 (70) | 85 (82) | 0.5 (0.2; 1.3) | 0.19 |
   No | 12 (30) | 19 (18) |  |  |
Taking of shower/bath at work | Â | Â | Â | Â |
   Yes | 26 (65) | 52 (50) | 1.9 (0.8; 4.3) | 0.15 |
   No | 14 (35) | 52 (50) |  |  |
Lending out of service boars | Â | Â | Â | Â |
   Yes | 8 (20) | 33 (32) | 0.5 (0.2; 1.4) | 0.23 |
   No | 32 (80) | 71 (68) |  |  |
Daily cleaning of pen floor | Â | Â | Â | Â |
   Yes | 36 (90) | 95 (91) | 0.9 (0.2; 4.0) | 1.00 |
   No | 4 (10) | 9 (19) |  |  |
Daily disinfection of pen floor | Â | Â | Â | Â |
   Yes | 8 (20) | 25 (24) | 0.8 (0.3; 2.1) | 0.78 |
   No | 32 (80) | 79 (76) |  |  |
Daily cleaning of working utensils | Â | Â | Â | Â |
   Yes | 28 (70) | 71 (68) | 1.1 (0.4; 2.6) | 1.00 |
   No | 12 (30) | 33 (32) |  |  |
Daily disinfection of working utensils | Â | Â | Â | Â |
   Yes | 9 (22.5) | 21 (20) | 1.1 (0.4; 3.0) | 0.92 |
   No | 31 (77.5) | 83 (80) |  |  |
Snacking or eating while working | Â | Â | Â | Â |
   Yes | 10 (25) | 19 (18) | 1.5 (0.6; 3.8) | 0.50 |
   No | 30 (75) | 85 (82) |  |  |
Wearing of work clothes outside of farm | Â | Â | Â | Â |
   Yes | 8 (20) | 15 (14) | 1.5 (0.5; 4.2) | 0.56 |
   No | 32 (80) | 89 (86) |  |  |
Source of replacement stock | Â | Â | Â | Â |
   External source | 31 (62.5) | 54 (52) | 3.2 (1.3; 8.3) | 0.01 |
   Internal source | 9 (37.5) | 50 (48) |  |  |
Feeding of swill | Â | Â | Â | Â |
   Yes | 22 (55) | 59 (57) | 0.9 (0.4; 2.1) | 1.00 |
   No | 18 (45) | 45 (43) |  |  |
Having carcass disposal or burying site within 1Â km radius of farm | Â | Â | Â | Â |
   Yes | 27 (67.5) | 59 (57) | 1.6 (0.7; 3.7) | 0.32 |
   No | 13 (32.5) | 45 (43) |  |  |
Presence of nearby pig farms (within 1Â km radius) | Â | Â | Â | Â |
   Yes | 21 (52.5) | 59 (57) | 0.8 (0.4; 1.9) | 0.79 |
   No | 19 (47.5) | 45 (43) |  |  |
Sharing of farm workers among fellow farmers | Â | Â | Â | Â |
   Yes | 4 (10) | 13 (12.5) | 0.8 (0.2; 2.8) | 0.93 |
   No | 36 (90) | 91 (87.5) |  |  |
Sharing of working utensils among fellow farmers | Â | Â | Â | Â |
   Yes | 3 (7.5) | 5 (5) | 1.6 (0.2; 8.7) | 0.78 |
   No | 37 (92.5) | 99 (95) |  |  |
Farm workers having a designated work footwear | Â | Â | Â | Â |
   Yes | 27 (67.5) | 77 (74) | 0.7 (0.3; 1.8) | 0.56 |
   No | 13 (32.5) | 27 (26) |  |  |