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Table 2 Geometric and arithmetic mean (standard deviation) flea counts of spinetoram-treated cats and percent reduction relative to geometric mean counts in control cats in Study 2

From: Effectiveness and residual speed of flea kill of a novel spot on formulation of spinetoram (Cheristin®) for cats

 

Day of study

2

9

16

23

30

37

Untreated Control

 Arithmetic mean

56.1 (11.1)

67.1 (15.0)

65.6 (11.8)

61 (18.8)

73.4 (18.2)

68.3 (11.3)

 Geometric mean

57.0

65.5

64.7

58.1

71.2

67.4

Spinetoram

 Arithmetic mean

0 (0)

0 (0)

0 (0)

0.4 (1.1)

2.1 (2.3)

7.1 (10.2)

 Geometric mean

0.0*

0.0*

0.0*

0.2*

1.4*

2.7*

 % Reduction from Control

100

100

100

99.7

98.1

96.0

  1. *P < 0.0001