Table 3.

Prevalence estimates and 95% confidence intervals (CIs) of owner-reported lower urinary tract signs (LUTS) at 18 months, 30 months and 48 months for cats enrolled in the Bristol Cats Study

Age (months)	Number of cats with owner-reported LUTS	Number of cats observed urinating	Prevalence (%) of LUTS for cats observed urinating (95% CI)	Number of cats (including those not seen urinating)	Prevalence of LUTS for all cats (including those not observed urinating) (95% CI)
18	44	1030	4.3 (3.2–5.7)	1497	2.9 (2.2–3.9)
30	21	557	3.8 (2.5–5.7)	875	2.4 (1.6–3.6)
48	11	182	6.0 (3.4–10.5)	250	4.4 (2.5–7.7)