Description
Compare explicit research timeline timestamps without certifying preregistration quality.
Evidence review distinguishes reporting completeness, source identity, timing, comparator descriptions, and the validity of a clinical claim. Matching metadata or calculating an interval cannot establish study quality or treatment efficacy. Measurement and protocol conventions need to remain explicit before records are compared.
Compare explicit research timeline timestamps without certifying preregistration quality.
When to use this tool
Use Research Preregistered Time Gap when you need this specific evidence-record, measurement, interval, comparator, or protocol check.
How to use the tool and how it works
- Enter registrationTime, enrollmentStart, analysisTime. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read registrationLead, analysisLag, registeredBeforeEnrollment. Inspect registeredBeforeEnrollment before interpreting the associated values.
Return registrationLead=enrollmentStart-registrationTime, analysisLag=analysisTime-enrollmentStart, and registeredBeforeEnrollment=(registrationTime<enrollmentStart).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| registrationTime | Registration Time | Required. Finite number. |
| enrollmentStart | Enrollment Start | Required. Finite number. |
| analysisTime | Analysis Time | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| registrationLead | Registration Lead | Required. Finite number. |
| analysisLag | Analysis Lag | Required. Finite number. |
| registeredBeforeEnrollment | Strictly before; equal timestamps return false. | Required. Boolean. |
{
"input": {
"registrationTime": 5,
"enrollmentStart": 10,
"analysisTime": 30
},
"output": {
"registrationLead": 5,
"analysisLag": 20,
"registeredBeforeEnrollment": true
}
}Limitations and assumptions
- Times need one unit and origin; exact equality is not before enrollment. The arithmetic does not authenticate registry dates, inspect protocol changes, or establish adequate preregistration or study validity.
- 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. Signed zero is exported as zero.
Alternative or Complementary methods
Use a substantive source and study appraisal for clinical claims. Verify methods, preregistration, reporting, comparator conditions, and measurement validity beyond matching labels or calculated completeness.
References
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