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. 2021 Apr 2;28:23. doi: 10.1051/parasite/2021019

Table 4.

Ixodes scapularis studies: mean live tick counts per group and efficacy results

Study n Arithmetic means (AM) of live ticks and % efficacy1 on indicated days
I. scapularis #1 Day 2 Day 9 Day 16 Day 23 Day 32
 Control group2 8 AM 26.5 27.9 30.4 32.1 32.5
 Treated group3 8 AM 1.3 0.2 0.0 0.4 0.0
% efficacy4 95.1 99.3 100.0 98.8 100.0
I. scapularis #2 Day 2 Day 9 Day 16 Day 22 Day 32
 Control group2 10 AM 24.5 26.5 27.2 24.4 22.2
 Treated group3 10 AM 0.3 0.0 0.0 0.1 0.4
% efficacy4 98.8 100.0 100.0 99.6 98.2

Note: p-values5 for comparison of the untreated and treated groups = <0.0001 at all time-points.

n = number of cats per group.

1

The I. scapularis counts were analyzed using SAS Version 9.4. The logarithm of the (count + 1) was analyzed at each study day separately using the MIXED procedure with treatment group used as a fixed effect and blocks used as a random effect.

2

Control group = Mineral oil administered topically once on Day 0 at 0.12 mL/kg

3

Treated group = Novel formulation administered topically once on Day 0 at 0.12 mL/kg, providing 1.4 mg/kg esafoxolaner, 10.0 mg/kg praziquantel and 0.5 mg/kg eprinomectin

4

Percent efficacy = [(C – T)/C] × 100, where C and T are the arithmetic means of the control and treated groups, respectively.

5

Two-sample probability value comparing the population means of the treated group vs. the control group.