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Table 6 Odds ratios (ORs) and 95% confidence intervals (CIs) for particular grades of MCTs by age, size and sex

From: Epidemiological assessment of the risk of canine mast cell tumours based on the Kiupel two-grade malignancy classification

Variable All MCTs Kiupel grade
Low High
OR (95% CI) P OR (95% CI) P OR (95% CI) P
Sex
 Male 1 (base) 1 (base) 1 (base)
 Female 1.38 (1.14–1.69) 0.001 1.43 (1.14–1.78) 0.001 1.26 (0.87–1.83) 0.217
Age (years)
 0–3 1 (base) 1 (base) 1 (base)
 4–6 7.23 (4.16–12.55) < 0.001 8.54 (4.53–16.10) < 0.001 3.63 (1.21–10.87) 0.021
 7–10 7.49 (4.39–12.77) < 0.001 8.18 (4.41–15.18) < 0.001 5.57 (2.00–15.52) 0.001
 11–16 4.87 (2.77–8.56) < 0.001 3.17 (1.61–6.24) 0.001 9.55 (3.41–26.77) < 0.001
Size
 Small 1 (base) 1 (base) 1 (base)
 Medium 2.96 (2.18–4.01) < 0.001 3.47 (2.45–4.92) < 0.001 1.71 (0.96–3.03) 0.066
 Large 0.84 (0.59–1.21) 0.366 0.90 (0.59–1.36) 0.626 0.71 (0.36–1.38) 0.321