Description
Label a one-sided censored observation bound.
Censoring preserves partial information about an observation. Follow-up exposure ends under an explicit event/censor policy, while one-sided data bounds indicate values below or above a limit; neither record transformation estimates a survival distribution or resolves missingness assumptions.
Label a one-sided censored observation bound.
When to use this tool
Use Study Data Censor Limit Direction Token when checking the stated clinical-research record, allocation, timing, analysis or evidence-basis convention.
How to use the tool and how it works
- Enter limit, direction, inclusive. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read lowerPresent, upperPresent, bound, inclusive. Inspect lowerPresent, upperPresent, inclusive before interpreting the associated values.
Label a one-sided censored observation bound. Require direction left or right; right sets lowerPresent, left sets upperPresent, and return supplied limit and inclusive flag.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| limit | Limit | Required. Finite number. |
| direction | Direction | Required. Text; one of "left", "right"; maximum UTF-16 length 8192. |
| inclusive | Inclusive | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| lowerPresent | True for right censoring, where the observation is bounded below. | Required. Boolean. |
| upperPresent | True for left censoring, where the observation is bounded above. | Required. Boolean. |
| bound | Bound | Required. Finite number. |
| inclusive | Inclusive | Required. Boolean. |
{
"input": {
"limit": 5,
"direction": "left",
"inclusive": false
},
"output": {
"lowerPresent": false,
"upperPresent": true,
"bound": 5,
"inclusive": false
}
}Limitations and assumptions
- This preserves bound metadata, not an imputed value, likelihood contribution or validated assay limit.
- 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 complete approved protocol, authenticated source records and qualified clinical/statistical oversight for actual trial design, conduct and interpretation.
References
Similar or alternative tools
- Trial Followup Person Day Censor Term
Return one participant's censored exposure and event count.
- Research Instrument Edition Token
Qualify an explicit research instrument identifier by edition without scoring or validating an instrument.