PUBLIC LIBRARY / CALCULATOR

Tanaka 2002 · population sodium excretion

Estimates population averages in Japanese adults ages 20 to 59. Estimated excretion does not determine an individual’s salt intake. Do not use for individual clinical decisions.

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Estimate sodium excretion in ELUCENIA

Tanaka method (2002). The result is a NaCl equivalent and estimates a population mean, not an individual measurement of intake. Enter only data without patient identifiers. Field limits are technical; only the age range reflects the study population.

Sources and documentation

Method version

Tanaka 2002

Formula and criteria

Predicted creatinine in mg/day = −2.04 × age + 14.89 × weight in kg + 16.14 × height in cm − 2244.45. X = urinary sodium in mmol/L ÷ (urinary creatinine in mg/dL × 10) × predicted creatinine. Estimated sodium in mmol/day = 21.98 × X^0.392; equivalent NaCl in g/day = estimated sodium × 58.44/1000.

Population and limitations

Estimates population averages in Japanese adults ages 20 to 59. Estimated excretion does not determine an individual’s salt intake. Do not use for individual clinical decisions.

Synthetic cases checked (1)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

{
  "ageYears": "40",
  "heightCm": "170",
  "weightKg": "80",
  "sodiumMmolL": "100",
  "creatinineMgDl": "80"
}

Expected result

{
  "value": 10.3,
  "unit": "g NaCl equivalent/day"
}

Actual result

{
  "value": 10.3,
  "unit": "g NaCl equivalent/day"
}

References

Identifier: jas-tanaka-salt

Checking formulas and synthetic cases does not constitute clinical validation.

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.