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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