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Home Support Session Net Contact Term Tool

Net session time excludes the union of supplied travel and documentation intervals, using an explicit overlap correction.

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Description

Subtract the exclusion union for netContactMinutes and divide by session duration.

Research schedules and activity records use numeric intervals, pauses, and overlap conventions. The same endpoints can produce different summaries depending on whether simultaneous activities are counted once or separately.

Subtract the exclusion union for netContactMinutes and divide by session duration.

When to use this tool

Use Home Support Session Net Contact Term when you need a time-budget or interval calculation in geriatric research records.

How to use the tool and how it works

  1. Enter sessionMinutes, travelMinutes, documentationMinutes, simultaneousExcludedMinutes. 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 netContactMinutes, contactShare. Use the output convention below.

Require positive sessionMinutes and nonnegative travel and documentation exclusions with valid shared overlap and union within session. Subtract the exclusion union for netContactMinutes and divide by session duration.1

Input fieldMeaning and unitsAccepted input
sessionMinutesSession Minutes Unit: min.Required. Finite number; strictly above 0.
travelMinutesTravel Minutes Unit: min.Required. Finite number; minimum 0.
documentationMinutesDocumentation Minutes Unit: min.Required. Finite number; minimum 0.
simultaneousExcludedMinutesSimultaneous Excluded Minutes Unit: min.Required. Finite number; minimum 0.
Output fieldInterpretationReturned shape
netContactMinutesNet Contact Minutes Unit: min.Required. Finite number.
contactShareContact ShareRequired. Finite number.
json
{
  "input": {
    "sessionMinutes": 120,
    "travelMinutes": 30,
    "documentationMinutes": 20,
    "simultaneousExcludedMinutes": 10
  },
  "output": {
    "netContactMinutes": 80,
    "contactShare": 0.6666666666666666
  }
}

Limitations and assumptions

  • Supplied overlap avoids double subtraction but does not verify actual contact, care quality, billing eligibility, or sufficient support.
  • 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

Reconcile the full schedule and source timing convention before aggregation. Use an appropriate observational or clinical assessment for questions that duration arithmetic cannot answer.

References

  1. Calculation and input contract: geriatrics/home-support-session-net-contact-term — tool.io

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