Survey Doctor has retired PROMIS Adult Short Form v1.0 Sleep-Related Impairment 8a. All 33 raw-to-T-score conversions in its stored table differ from the revised official table. If you have an older Survey Doctor result, do not treat its T-score, band, percentile, or trend as a verified PROMIS interpretation.
The old conversion fails.
The quick answer
This eight-item form asks about daytime effects linked to poor sleep during the past seven days. A complete response produces a raw total from 8 to 40. That total must be converted with the revised table for this exact form.
The exact form matters.
Survey Doctor's retired table conflicts at every possible raw total. The product preserves the older number as history. It keeps that number outside current interpretation, comparison, trends, and primary score summaries.
The warning is absolute.
The form is no longer available for new collection or manual score entry.
What the form measured
The official Sleep-Related Impairment 8a form contains eight questions that people answer themselves. They cover daytime sleepiness, alertness after waking, concentration, daily tasks, irritability linked to poor sleep, and difficulty staying awake.
The form focuses on effects while awake. It does not give a detailed record of sleep duration, nighttime awakenings, breathing, or sleep stages. It also cannot diagnose a sleep disorder or explain why someone feels tired.
It is descriptive.
Why the old T-score is unverified
Every completed item contributes a value from 1 to 5. One positively worded item is reversed in the stored scoring direction, so higher raw totals represent more impairment. All eight answers are required before table conversion.
The HealthMeasures sleep scoring manual maps a complete raw total of 8 to a T-score of 30.0 and 40 to 80.1. Survey Doctor's retired table maps those totals to 28.9 and 81.4. The other 31 entries also differ.
No entry matches.
The official manual says the 8a conversion was revised in 2014. Scores made with the earlier table should use the revised table. Survey Doctor does not silently rewrite history because the exact form, completeness, and original answers must first be known.
Version details matter.
Can an old result be corrected?
Keep the item answers if they are available. An authorized clinical or research team may be able to rescore an item-bearing record after confirming the exact form and that all eight items were completed.
Rescoring needs evidence.
A score-only record cannot establish those facts. It does not show the answers, completeness, or table version. Keep it as limited history. Do not turn it into a new clinical result.
Keep the original.
Useful record details include:
- exact form name and version
- completion date
- individual item answers, when available
- raw total and converted score as originally recorded
- scoring method or table version
Daytime impairment is not sleep disturbance
Sleep-Related Impairment describes what happens while awake. Sleep Disturbance describes the experience and quality of sleep at night. Difficulty in one area may not match difficulty in the other. Their results are not interchangeable.
Read the older Sleep Disturbance 8a score guide for that separate measure and conversion warning.
Keep the measures apart.
When symptoms matter more than the number
Talk with a healthcare provider when daytime sleepiness, poor concentration, or reduced alertness persists or interferes with daily life. NHLBI guidance lists daytime sleepiness, trouble focusing, loud snoring, breathing pauses, and gasping among possible sleep apnea symptoms.
An old score cannot decide whether you are safe to drive. NHTSA guidance describes the crash risk and advises delaying driving until well rested.
The bottom line
The retired Sleep-Related Impairment 8a form measured daytime effects linked to poor sleep over seven days. Its old Survey Doctor T-score is unverified because every stored conversion differs from the revised official table. Preserve the original details, but do not use the number or label for clinical comparison.
The Sleep-Related Impairment 8a assessment page records the current retirement and scoring warning.