Table 3 Geometric and arithmetic mean (standard deviation) flea counts 1 h post-treatment (Day 0) and post-reinfestations in Study 3

 Arithmetic mean

55.3 (12.7)

68.5 (9.7)

69.7 (12.6)

81.2 (7.2)

86.0 (7.2)

 Geometric mean

54.2

68.0^a

68.6^a

80.9^a

85.6^b

 Arithmetic mean

63.8 (11.4)

60.6 (6.0)

55.2 (13.8)

59.5 (17.4)

65.5 (9.0)^b,d

 Geometric mean

62.9

60.2^d

53.6^c

57.6^a

65.0^b,d

 % Reduction from Control

0

11.4

21.9

28.9

24.1

 Arithmetic mean

70.2 (13.3)

55.3 (13.4)

45.7 (5.9)

66.3 (8.3)

57.5 (9.2)

 Geometric mean

69.1

53.8

45.4^a,b

65.9^c

57.0^b,d

 % Reduction from Control

0

20.8

33.9

18.5

33.5

 Arithmetic mean

62.0 (17.5)

47.5 (9.8)

30.5 (14.4)

45.5 (4.3)

42.3 (9.9)

 Geometric mean

60.1

46.6^a,d

28.0^a,c

45.3^a,c

41.3^b,d

 % Reduction from Control

0

31.4

59.2

44.0

51.8