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. 2016 Jun 24;11(6):e0157987. doi: 10.1371/journal.pone.0157987

Table 1. Characteristics of farms (N = 8).

Farm 1 Farm 2 Farm 3 Farm 4 Farm 5 Farm 6 Farm 7 Farm 8 p value
Location of farm Southern part Southern part Northern part Central part Southern part Northern part East coast Central part -
Type of livestock
Cattle Cattle Sheep Cattle Goat Cattle Cattle Cattle -
Type of grazing system
Rotation Rotation Rotation Rotation Zero grazing Rotation Rotation Rotation -
Frequency of applying acaricides
Monthly Every 6 months Only when ticks’ density is high Every 6 months Only when ticks’ density is high Only when ticks’ density is high Monthly Every 2 months -
No. of farmworkers
N = 41 N = 36 N = 18 N = 23 N = 18 N = 24 N = 28 N = 21 -
Response rate (%)
71.4 72.2 72.2 73.9 72.2 70.8 71.4 71.4 -
Farmworkers’ experience of tick bites, n (%)
8(26.7%) 16(61.5) 7(53.8) 13(76.5) 11(84.6) 14(82.4) 12(60.0) 10(66.7) 0.002**
Farmworkers’ knowledge mean (SD)
13.1(2.8) 14.3(4.1) 13.2(3.7) 13.4(2.8) 14.1(2.2) 14.2(3.0) 13.5(3.3) 13.1(3.2) 0.84
Prevention practice mean (SD)††
7.8(3.7) 7.6(3.3) 9.5(3.4) 8.2(2.1) 9.6(3.4) 7.2(1.9) 10.0(2.4) 7.0(2.1) 0.01*

Total knowledge score (0–20 items score), Mean = 13.6 (SD±3.2)

††Total preventive practices score (0–15 items score), Mean = 8.27 (SD±3.09)

Chi square test.

One-way analysis of variance (ANOVA)

Association is significant at the **p < 0.01; *p < 0.05.