Skip to content

Main content

Inflation Index Missing Base Gap Tool

Retain missing-index metadata rather than silently substituting a price-year base.

Loading tool…

Description

Rebase amount by target/source only when both known, otherwise return zero and list missing bases.

Health-economic costs depend on resource definitions, perspective, currency, price year, and timing. An incremental or discounted model term uses supplied assumptions without proving treatment benefit or determining an adoption decision.

Rebase amount by target/source only when both known, otherwise return zero and list missing bases.

When to use this tool

Use Inflation Index Missing Base Gap when you need one transparent health-economic cost or comparison component.

How to use the tool and how it works

  1. Enter amount, sourceIndex, targetIndex, sourceKnown, targetKnown. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read defined, rebasedAmount, missingBases. Inspect defined before interpreting the associated values.

Require positive sourceIndex and targetIndex even when knowledge flags are false. Rebase amount by target/source only when both known, otherwise return zero and list missing bases.1

Input fieldMeaning and unitsAccepted input
amountAmountRequired. Finite number.
sourceIndexSource IndexRequired. Finite number; strictly above 0.
targetIndexTarget IndexRequired. Finite number; strictly above 0.
sourceKnownSource KnownRequired. Boolean.
targetKnownTarget KnownRequired. Boolean.
Output fieldInterpretationReturned shape
definedWhether the associated ratio has its required denominator; inspect before using a zero placeholder.Required. Boolean.
rebasedAmountRebased AmountRequired. Finite number.
missingBasesMissing BasesRequired. Array of text; maximum UTF-16 length 8192; maximum items 256.
json
{
  "input": {
    "amount": 100,
    "sourceIndex": 80,
    "targetIndex": 120,
    "sourceKnown": false,
    "targetKnown": true
  },
  "output": {
    "defined": false,
    "rebasedAmount": 0,
    "missingBases": [
      "source"
    ]
  }
}

Limitations and assumptions

  • Rebased zero is a placeholder when undefined; compatible index series, currency, price-year definitions, and purchasing-power interpretation must be established externally.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Review the complete economic evaluation, clinical evidence, uncertainty, and relevant decision context separately.

References

  1. Calculation and input contract: health-economics/inflation-index-missing-base-gap — tool.io

Similar or alternative tools