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Table 1 Schematic Experimental Design of studies aimed at testing the efficacy of an imidacloprid 10.5%/flumethrin 4.5% collar against ectoparasites on dogs

From: Efficacy of an imidacloprid/flumethrin collar against fleas, ticks, mites and lice on dogs

Study Day (Week)

Activity

−10 (approximately)

Acclimatization to housing

−7

Pre-study flea or tick infestations

−4

Select dogs with highest flea or tick counts, and allocate them to treatment groups consisting of at least 7 untreated dogs and 7 treated dogs

−2

Tick infestation

- 1

Flea infestation

0

Fit collars to all dogs in treatment group

2

Flea and tick counts

7 (=Week 1)

Flea and/or tick infestation

8, 9

Flea counts Day 8, tick counts Day 9

28 (=Week 4)

Flea and/or tick infestation

29, 30

Flea counts Day 29, tick counts Day 30

56 (=Week 8)

Flea and/or tick infestation

57, 58

Flea counts Day 57, tick counts Day 58

84 (=Week 12)

Flea and/or tick infestation

85, 86

Flea counts Day 85, tick counts Day 86

112 (=Week 16)

Flea and/or tick infestation

113, 114

Flea counts Day113, tick counts Day 114

140 (=Week 20)

Flea and/or tick infestation

141, 142

Flea counts Day 142, tick counts Day 142

168 (=Week 24)

Flea and/or tick infestation

169, 170

Flea counts Day 169, tick counts Day 170

196 (=Week 28)

Flea and/or tick infestation

197, 198

Flea counts Day 197, tick counts Day 198

224 (=Week 32)

Flea and/or tick infestation

225, 226

Flea counts Day 225, tick counts Day 226

238 (=Week 34)

Flea and/or tick infestation

239, 240

Flea counts Day 239, tick counts Day 240