Table 2: The Efficacy of Ivermectin among the Respondents in Idogun Community.

Age Group (Year) Number Infected before treatment (Prev.) Number Infected after 6months (Prev.) Efficacy (%) ± SE Number Infected after 12 months (Prev.) Efficacy (%) ± SE Df F-value P-Value
10-20 4 (16.7) 3 (12.5) 25.1d ± 0.37 1 (4.2) 74.9d ± 1.65 6 18.000 0.000
21-30 8 (20) 6 (15) 25d ± 0.54 1 (2.5) 87.5e ± 1.89
31-40 6 (20) 4 (13.3) 33.5e ±1.31 2 (6.7) 66.5d ±1.37
41-50 28 (28) 25 (25) 10.7c ± 0.39 16 (16) 42.9c ± 1.52
51-60 34 (43.6) 32 (41.0) 6.0b ± 0.37 26 (33.3) 23.6b ± 1.71
61-70 16 (24.4) 15 (22.7) 7b ± 0.36 12 (18.2) 25.4b ± 1.32
71-80 12 (33.3) 12 (33.3) 0a ± 0.0 10 (27.8) 16.5a ± 1.27
Total 108 (28.1) 97 (25.3) 10.0 68 (17.7) 37.0

Note: Figures with the same superscript are not significantly different while figures with different superscripts are significantly different across the columns.

Letter a-e are used to separate the efficacies across the age groups after significant difference was been established by One-Way ANOVA at P < 0.05.