Table 2.

Number (n), odds ratio (OR), and 95% confidence interval (CI) for age and sex of dogs with calcium oxalate (CaOx) uroliths compared to two comparison groups: non‐CaOx uroliths and hospital admissions

Variables	CaOx (n)	Non‐CaOx (n)	OR (95% CI) for CaOx versus non‐CaOx	Hospital admission (n)	OR (95% CI) for CaOx versus hospital admission
Age, y
<6	23 136	65 850	1.00 (Ref)	15 759	1.00 (Ref)
6–8	28 878	29 585	2.77 (2.71‐2.84)	5434	3.62 (3.49‐3.75)
8‐10	32 043	19 717	4.62 (4.51‐4.73)	5516	3.95 (3.82‐4.09)
>10	36 147	14 285	7.20 (7.02‐7.38)	8444	2.91 (2.82‐3.00)
Sex
Female	33 025	108 398	1.00 (Ref)	17 073	1.00 (Ref)
Male	89 726	24 437	12.05 (11.82‐12.27)	18 312	2.53 (2.47‐2.59)

Abbreviation: Ref, reference population.