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Table 3 Geometric mean tick count and acaricidal efficacy

From: A study on the long-term efficacy of Seresto® collars in preventing Babesia canis (Piana & Galli-Valerio, 1895) transmission to dogs by infected Dermacentor reticulatus (Fabricius, 1794) ticks

Day

Geometric mean

Geometric mean (% efficacy)

P-valuea

Group 1

Group 2

Day 30

5.8

0.4 (93.0)

F(1,14) = 23.11, P = 0.0003

Day 58

4.1

0 (100)

F(1,14) = 46.83, P < 0.0001

Day 86

4.9

0.1 (97.0)

F(1,14) = 62.62, P < 0.0001

Day 114

8.6

0.1 (99.0)

F(1,14) = 128.27, P < 0.0001

Day 142

3.1

0 (100)

F(1,14) = 21.06, P = 0.0004

Day 170

4.4

0 (100)

F(1,14) = 62.28, P < 0.0001

Day 198

8.7

0 (100)

F(1,14) = 99.57, P < 0.0001

Day 226

5.4

0.1 (98.3)

F(1,14) = 83.22, P < 0.0001

Day 231b

4.1

0.1 (97.8)

F(1,14) = 21.48, P = 0.0004

  1. aP-value: One-way ANOVA with a treatment effect presented as test statistic (F-value) plus degrees of freedom with exact P-value
  2. bRemoval count on Day 231, in situ count on all other assessment days
  3. Note: Group 1: Non-treated control dogs; Group 2: Seresto®-treated dogs