Table 1 Results from counts of Demodex canis mites obtained from deep skin scrapings

Day −2

 Arithmetic mean (SD)

639.9 (589.9)

608.5 (459.5)

 Median

507.5

459.0

 Range

19‒1764

90‒1314

 Geometric mean

347.5

432.3

Day 28

 Arithmetic mean (SD)

2.0 (2.8)

63.9 (118.3)

 Median

0.0

17.0

 Range

0‒6

0–351

 P-value (vs day −2)

 < 0.0005*

 < 0.0001*

 Test statistics

t₍₁₉₎ = 4.18

t₍₂₁₎ = 5.05

 Geometric mean

1.0

17.2

Day 56

 Arithmetic mean (SD)

0 (0.0)

34.1 (70.3)

 Median

0.0

11.0

 Range

0‒0

0‒207

 P-value (vs day −2)

0.0007*

 < 0.0001*

 Test statistics

t₍₁₉₎ = 4.05

t₍₂₁₎ = 5.33

 Geometric mean

0.0

8.5

Day 84

 Arithmetic mean (SD)

0 (0.0)

15.0 (22.8)

 Median

0.0

3.5

 Range

0‒0

0‒65

 P-value (vs day −2)

0.0007*

 < 0.0001*

 Test statistics

t₍₁₉₎ =4.05

t₍₂₁₎ = 5.51

 Geometric mean

0.0

5.1