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. 2021 May 28;14:284. doi: 10.1186/s13071-021-04767-6

Table 3.

Demographics of dogs enrolled as veterinary patients and included in the safety-evaluable population for the prevention of heartworm disease (Dirofilaria immitis) in client-owned dogs in the USA

Demographic US heartworm prevention field study
Credelio Plus
(n = 159)
Milbemycin oxime + lufenuron
(n = 158)
Purebred (n) (%) 111 (69.8) 76 (48.1)
Crossbred/mongrel (n) (%) 48 (30.2) 82 (51.9)
Age, mean (months) 48.6 46.8
Age, range (months) 2.0–158.0 2.0–165.0
Age group < 12 months (n) (%) 52 (32.7) 48 (30.4)
Age group ≥ 12 months (n) (%) 107 (67.3) 110 (69.6)
Male (n) (%) 79 (49.7) 65 (41.1)
Female (n) (%) 80 (50.3) 93 (58.9)
Body weight, mean (kg) 16.4 18.0
Body weight, range (kg) 2.1–50.7 2.0–61.1