Table 1.

Descriptive statistics of cats with and without ureteral obstruction (UO)

	UO (n = 28)	No UO (n = 140)
Median (IQR) age (years)	8.0 (5.7–10.9)	10.0 (5.0–13.0)
Female/male (n)	15/13	79/61
Domestic/pedigree (n)	15/13	77/63
Indoor/outdoor (n)	16/10	86/49
Moist/mixed/dry diet (n)	1/10/17	28/82/30
Cat with plasma tCa levels available (n)	22	88
Median (IQR) tCa (mmol/l)	2.3 (2.17–2.45)	2.23 (2.09–2.40)
Cats with creatinine levels available (n)	28	98
Median (IQR) creatinine (mmol/l)	751 (415–1240)	140

IQR = interquartile range; tCa = total calcium