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Table 5 Efficacy and summary statistics

From: Efficacy of four commercially available heartworm preventive products against the JYD-34 laboratory strain of Dirofilaria immitis

Treatment group N No. of positive dogs Geometric mean no. of wormsc Percent efficacy d Treated vs Non-treated P-value (Z-value)
Ivermectin/ Pyrantel a (Group 1) 8 8 13.1 29.0 0.069 (-1.96)
Milbemycin Oxime/ Spinosada (Group 2) 8 8 8.8 52.2 0.020 (-2.59)
Selamectina (Group 3) 8 8 13.1 28.8 0.046 (-2.18)
Imidacloprid/ Moxidectinb (Group 4) 8 0 0.0 100.0 0.003 (-3.55)
Non-treated Control (Group 5) 8 8 18.4 NA NA
  1. aAdministered as three treatments on SD 0, 31 and 60
  2. bAdministered once on SD 0
  3. cNumber of positive dogs/Number of dogs in treatment group × 100
  4. dGeometric mean number of worms (non-treated)-geometric mean number of worms (treated)/geometric mean number of worms (non-treated) × 100