Osteopathy Evidence Interval Null Gap Tool

Description

Audit a supplied effect interval and explicit null/end-point convention.

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.

Audit a supplied effect interval and explicit null/end-point convention.

When to use this tool

Use Osteopathy Evidence Interval Null Gap when you need this specific evidence-record, measurement, interval, comparator, or protocol check.

How to use the tool and how it works

Enter lower, upper, nullValue, lowerClosed, upperClosed. Use the units and conventions below.
Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
Read width, lowerGap, upperGap, includesNull. Inspect includesNull before interpreting the associated values.

Require upper>=lower. Return width=upper-lower, lowerGap=nullValue-lower, upperGap=upper-nullValue, and includesNull using the selected lowerClosed and upperClosed comparisons.^[1]

Input field	Meaning and units	Accepted input
lower	Lower	Required. Finite number.
upper	Upper	Required. Finite number.
nullValue	Null Value	Required. Finite number.
lowerClosed	Lower Closed	Required. Boolean.
upperClosed	Upper Closed	Required. Boolean.

Output field	Interpretation	Returned shape
width	Width	Required. Finite number.
lowerGap	Lower Gap	Required. Finite number.
upperGap	Upper Gap	Required. Finite number.
includesNull	Whether the supplied null lies within the selected open/closed interval.	Required. Boolean.

json

{
  "input": {
    "lower": -0.2,
    "upper": 0.5,
    "nullValue": 0,
    "lowerClosed": true,
    "upperClosed": true
  },
  "output": {
    "width": 0.7,
    "lowerGap": 0.2,
    "upperGap": 0.5,
    "includesNull": true
  }
}

Limitations and assumptions

The interval and null are supplied on one effect scale. Endpoint conventions are explicit; this arithmetic does not infer a confidence level, statistical significance, clinical importance, or treatment efficacy.
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

Calculation and input contract: osteopathy/osteopathy-evidence-interval-null-gap — tool.io

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