Correlation of the Dietary Protein Intake between Those Estimated from a Short Protein Food-Recall Questionnaire and from 24-Hour Urinary Urea-Nitrogen Excretion in Stages 3-4 Chronic Kidney Disease Patients

Table 1

Participants’ demographic and biochemical data.

Parameters	Values
Age, years (mean ± SD)	62 ± 7.8
Female, case (%)	43 (71.6%)
Education level, case (%)
Uneducated	9 (15%)
Elementary school	51 (85%)
Diabetic kidney disease, case (%)	31 (51.66%)
Hypertension, case (%)	58 (96.66%)
Cardiovascular disease, case (%)	2 (3.33%)
Stage of CKD,
3A cases (%)	21 (35%)
3B cases (%)	28 (46.7%)
4 cases (%)	11 (18.3%)
Body weight, kg (mean ± SD)	62.0 ± 4.24
BMI, kg/m^2 (mean ± SD)	25.1 ± 2.83
eGFR, ml per min per 1.73 m^2 (mean ± SD)	40.3 ± 9.73
Serum creatinine, mg/dl (mean ± SD)	1.58 ± 0.38
Serum albumin, g/dl (mean ± SD)	4.27 ± 0.41
LDL cholesterol, mg/dl (mean ± SD)	102 ± 29.5
Proteinuria status
No proteinuria	25 (41.7%)
Proteinuria positive	35 (58.3%)
Mean urine volume, ml (mean ± SD)	1581 ± 612