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Table 1 Demographic data in all dogs, healthy dogs and dogs with different stages of MMVD

From: Factors affecting the urinary aldosterone-to-creatinine ratio in healthy dogs and dogs with naturally occurring myxomatous mitral valve disease

  All dogs Healthy Stage B1 Stage B2 Stage C
Number 149 49 45 13 42
Age (years) 9 (6–12.25) 6 (3–7.50) †‡§ 9.99 ± 3.37 9 (8–12) 11.71 ± 2.88
Weight (kg) 9.40 (6.18–17.25) 16 (7.33–27.90) § 9.40 (7.45–18.15) 8.6 (3.08–11.75) 7 (4.95–10.25)
Sex (F/M) 75/74 30/19 20/25 6/7 19/23
Neuter status (IF/NF/IM/NM) 23/52/52/22 16/14/13/6 †§ 3/17/16/9 1/5/6/1 3/16/17/6
Breed   †‡§ §   
 CKCS 27 6 8 6 7
 CHH 18 7 4 3 4
 JRT 8 3 4 0 1
 Other breeds < 15 kg 53 6 16 3 28
 Other breeds ≥15 kg 43 27 13 1 2
  1. CKCS Cavalier King Charles Spaniel, CHH Chihuahua, JRT Jack Russell Terrier, F Females, M Males, IF Intact Females, NF Neutered Females, IM Intact Males, NM Neutered Males. Other breeds < 15 kg: 22 crossbreed (1 healthy, 8 stage B1, 2 stage B2, 11 stage C), 6 Dachshund (2 stage B1, 4 stage C), 5 Miniature Pinscher (1 stage B2, 4 stage C), 4 Toy Poodle (2 healthy, 2 stage B1), 4 Maltese (4 stage C), 3 Pug (2 healthy, 1 stage B1), 2 Shih-tzu (1 stage B1, 1 stage C), 1 Bichon Frisé (1 healthy), 1 Chinese Crested Dog (1 stage C), 1 English Cocker Spaniel (1 stage C), 1 Fox Terrier (1 stage C), 1 Bruxelles Griffon (1 stage B1), 1 Pekingese (1 stage C), 1 Yorkshire Terrier (1 stage B1). Other breeds ≥15 kg: 15 crossbreed (6 healthy, 7 stage B1, 1 stage B2, 1 stage C), 4 American Staffordshire Terrier (4 healthy), 4 Golden Retriever (4 healthy), 3 Pointer (2 healthy, 1 stage B1), 2 German Shepherd (1 healthy, 1 stage B1), 2 Staffordshire Bull Terrier (2 healthy), 1 Great Dane (1 healthy), 1 Standard Poodle (1 healthy), 1 Border Collie (1 stage B1), 1 Boxer (1 stage B1), 1 Cane Corso (1 stage B1), 1 Drahthaar (1 stage C), 1 Labrador Retriever (1 healthy), 1 Belgian Shepherd (1 healthy), 1 Rhodesian Ridgeback (1 healthy), 1 Standard Schnauzer (1 healthy), 1 English Setter (1 stage B1), 1 English Springer Spaniel (1 healthy), 1 Italian Hound (1 healthy)
  2. Data are reported as mean ± standard deviation for normally distributed variables and median (interquartile range) for non-normally distributed variables
  3. †values significantly differ (p < 0.05) from stage B1; ‡values significantly differ (p < 0.05) from stage B2; §values significantly differ (p < 0.05) from stage C