Proteinuria, ^99mTc-DTPA Scintigraphy, Creatinine-, Cystatin- and Combined-Based Equations in the Assessment of Chronic Kidney Disease

Table 2

Most frequent causes of CKD.

CKD etiology; (𝑛 = patients)	Group
	0	1	2	3	4	5	Total	𝜒^2	𝑃
Hypertension	0	10	28	56	33	48	175	80.30	0.0001
Diabetes	0	5	5	12	14	17	53	26.77	0.0001
Glomerulonephritis	0	9	18	30	10	18	85	20.65	0.024
PKD	0	2	3	11	2	9	27	8.54	0.13

Abbreviations: CKD: chronic kidney disease; PKD: polycystic kidney disease.