Description
Propagate an already resolved research anchor-date interval without clinical time-origin rules.
Research lesion records distinguish measured dimensions, geometric size models, censoring conventions, assessment denominators, and follow-up timing. An axis product, percent change, or coverage measure describes only its stated inputs and model. Such arithmetic does not automatically implement a clinical response criterion or validate a study.
Propagate an already resolved research anchor-date interval without clinical time-origin rules.
When to use this tool
Use Oncology Time Anchor Precision Flag when you need this research measurement, assessment-base, source, or event-time calculation.
How to use the tool and how it works
- Enter observationDay, anchorLowerDay, anchorUpperDay. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read elapsedLower, elapsedUpper, exactAnchor. Inspect exactAnchor before interpreting the associated values.
For ordered anchorLowerDay<=anchorUpperDay return elapsedLower=observationDay-anchorUpperDay, elapsedUpper=observationDay-anchorLowerDay, and exactAnchor on equality of the bounds.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observationDay | Observation Day | Required. Finite number. |
| anchorLowerDay | Anchor Lower Day | Required. Finite number. |
| anchorUpperDay | Anchor Upper Day | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| elapsedLower | Elapsed Lower | Required. Finite number. |
| elapsedUpper | Elapsed Upper | Required. Finite number. |
| exactAnchor | Exact Anchor | Required. Boolean. |
{
"input": {
"observationDay": 100,
"anchorLowerDay": 10,
"anchorUpperDay": 12
},
"output": {
"elapsedLower": 88,
"elapsedUpper": 90,
"exactAnchor": false
}
}Limitations and assumptions
- Inputs are integer day coordinates and negative elapsed values are allowed. The interval reflects supplied anchor precision rather than date parsing, a probability distribution, or a clinically adjudicated event time.
- 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
Use the intended study protocol and a complete measurement or analysis model for a broader conclusion. Verify lesion definitions, censoring, measurement correspondence, time anchors, and missing-assessment policy.
References
Similar or alternative tools
- Oncology Event Onset Report Delay
Signed report-delay interval from a supplied uncertain onset-time window, without an adverse-event or clinical interpretation.
- Research Birth Time Precision Width
Return the width and arithmetic midpoint of a supplied birth-time precision interval.