. 2018 Nov 19;12(11):e0006934. doi: 10.1371/journal.pntd.0006934

Table 1. Pair-wise differences of infection rates among the eight groups.

Group^*	Engorged mosquito (n)	Positive mosquito (n)	Infection rate (%)	Average of infection rate^** (%)
Historical control	20	17	85.00	81.67^a
	20	16	80.00
	20	16	80.00
0ng/ml	21	17	80.95	84.62^a
	21	19	90.48
	23	19	82.61
2ng/ml	25	22	88.00	85.29^a
	20	17	85.00
	23	19	82.61
4ng/ml	20	16	80.00	82.54^a
	21	18	85.71
	22	18	81.82
8ng/ml	20	14	70.00	74.24^{a, b}
	25	19	76.00
	21	16	76.19
16ng/ml	20	13	65.00	63.33^{b, c}
	20	13	65.00
	20	12	60.00
32ng/ml	23	12	52.17	54.29^{c, d}
	24	13	54.17
	23	13	56.52
64ng/ml	20	9	45.00	42.62^d
	20	8	40.00
	21	9	42.86

*: 0, 2, 4, 8, 16, 32, 64ng/ml are the groups of mosquitoes fed with according concentrations of ivermectin.

**: The average of infection rate that does not share a same letter indicates statistical difference at P < 0.05 using the Duncan multiple range test.