Research Article
Association of Calcium and Phosphate Levels with Incident Chronic Kidney Disease in Patients with Hypoparathyroidism: A Retrospective Case-Control Study
Table 3
Association between serum phosphate and calcium-phosphate product and development of CKD.
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CI: confidence interval; CKD: chronic kidney disease. Matching for groups was 1:1 based on age ± 5 years, sex, index date ± 1 year, and exposure window duration. Adjusted models were adjusted for the following baseline characteristics: age (continuous variable), index year (continuous), serum phosphate level in mmol/L (baseline measurement closest to index date, scaled 0.1-unit increase), hypocalcemia, and type 2 diabetes. †The reference range for serum phosphate in patients with chronic hypoparathyroidism is 0.81–1.45 mmol/L (2.5–4.5 mg/dL), which does not differ from the normal population reference range. ‡The reference range for calcium-phosphate product in patients with chronic hypoparathyroidism is ≤ 4.40 mmol2/L2 (≤55 mg2/dL2), which does not differ from the normal population reference range. |