| Variable | p-Value |
| Sex | 0.005 |
| Age | <0.001 |
| Diabetes | <0.001 |
| Hypertension | <0.001 |
| Systemic infections | 0.016 |
| Cardiovascular disease | 0.950 |
| Recurrent upper-urinary-tract infections | 0.600 |
| Gout or elevated serum uric acid levels | 0.449 |
| Regular use of NSAIDs or nephrotoxic medications | <0.001 |
| Decreased renal mass or unilateral kidney, congenital or acquired | 0.164 |
| Family history of CKD | 0.470 |
| Detected kidney stones or urinary tract stones | 0.830 |
| BMI | 0.007 |
| Waist circumference (metabolic disease) | 0.206 |
| Exercise | 0.858 |
| Smoking | 0.315 |
| Alcohol consumption | 0.546 |
| Unvoid urine | 0.883 |
| Drink a small amount of water (<40mL/kg/day) | 0.643 |
| Use herbal medicines or traditional medicines | 0.329 |
| Current use of pain relievers or NSAIDs | 0.074 |
| Current use of dietary supplements | 0.325 |
| eGFR | <0.001 |
| Systolic blood pressure (SBP) | 0.127 |
| Diastolic blood pressure (DBP) | <0.001 |
| Fasting plasma glucose (FPG) | <0.001 |
| Hemoglobin A1C (HbA1C) | 0.086 |
| Serum lipid | 0.382 |
| Self-management behavior assessment score (S1) | 0.169 |
| CKD knowledge score | <0.001 |
| Self-care ability assessment score (S2) | 0.010 |
| MTM | 0.005 |