Table 4.

Univariate analysis of risk of high BP in patients aged ≥16 years (n=314)

Considered Parameters	No. of Patientsa	Patients with High BP, %	OR (95% CI)	P Value
Sex
Female	168	20.8	1
Male	140	37.9	2.3 (1.4 to 3.8)	0.001
Age (yr)
16≤ age <40	158	13.3	1
40≤ age <60	95	34.7	3.5 (1.9 to 6.5)	<0.001
age ≥60	55	61.8	10.6 (5.2 to 21.5)	<0.001
CKD
No	226	19.9	1
Yes	82	52.4	4.4 (2.6 to 7.6)	<0.001
Obesity
No	257	24.1	1
Yes	40	47.5	2.8 (1.4 to 5.6)
Median time: first symptoms—treatment (yr)
<5	112	16.1	1
5≤–<10	31	32.3	2.5 (1.0 to 6.2)	0.05
≥10	88	40.9	3.6 (1.9 to 7.0)	<0.001
Severe impairment of renal parenchymab
No	117	24.8	1
Yes	114	38.6	1.9 (1.1 to 3.4)
Cystine-binding thiol
No	110	22.7	1
Yes	192	31.3	1.5 (0.9 to 2.7)	0.11
No. of urological procedures per patientc	275		1.0 (0.97 to 1.07)	0.44

OR, odds ratio; 95% CI, 95% confidence interval.

^aNumber of patients with available data.

^bSevere impairment of renal parenchyma is defined as a past history of partial or total nephrectomy, a unique congenital kidney, or at least one kidney with a size <10 cm in patients aged ≥16 years.

^cNumber of urological procedures per patient: mean 5.7±5.2; median 4 (0–31).