A brief report: The National Adult Reading Test (NART) is a stable assessment of premorbid intelligence across disease severity in obstructive sleep apnea (OSA)

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Abstract

Obstructive sleep apnea (OSA) is a widely prevalent disorder that can affect cognitive function. The relationship between cognitive function and OSA is known to be affected by an individual's premorbid cognitive ability. Tools to measure premorbid intelligence across OSA disease severity have not been validated. This brief report aims to establish if the National Adult Reading Test (NART) provides a stable estimate of premorbid intelligence across levels of OSA disease severity. We examined if NART scores varied systematically across levels of untreated OSA severity (defined according to the apnea–hypopnea index [AHI]) and mean oxygen saturation in sleep clinic (n = 121) and community samples (n = 398) using regression analysis. Simple linear regression was used to predict NART scores based on the AHI. NART-estimated premorbid IQ scores without demographics did not vary systematically with AHI (F < 1; β = 0.01) or mean SpO2(F < 1; β = 0.12). NART-estimated premorbid IQ scores with added demographic information also did not vary systematically with AHI (F < 1; β = −0.01) or mean SpO2 (F < 1; β = 0.15). This preliminary examination shows that the NART provides a stable estimate of premorbid intelligence across untreated OSA disease severity, as demarcated by AHI or mean nocturnal SpO2.

Original languageEnglish
Article numbere12958
JournalJournal of Sleep Research
DOIs
Publication statusPublished - 28 Nov 2019

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Obstructive Sleep Apnea
Intelligence
Reading
Cognition
Demography
Aptitude
Linear Models
Sleep
Regression Analysis
Oxygen

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title = "A brief report: The National Adult Reading Test (NART) is a stable assessment of premorbid intelligence across disease severity in obstructive sleep apnea (OSA)",
abstract = "Obstructive sleep apnea (OSA) is a widely prevalent disorder that can affect cognitive function. The relationship between cognitive function and OSA is known to be affected by an individual's premorbid cognitive ability. Tools to measure premorbid intelligence across OSA disease severity have not been validated. This brief report aims to establish if the National Adult Reading Test (NART) provides a stable estimate of premorbid intelligence across levels of OSA disease severity. We examined if NART scores varied systematically across levels of untreated OSA severity (defined according to the apnea–hypopnea index [AHI]) and mean oxygen saturation in sleep clinic (n = 121) and community samples (n = 398) using regression analysis. Simple linear regression was used to predict NART scores based on the AHI. NART-estimated premorbid IQ scores without demographics did not vary systematically with AHI (F < 1; β = 0.01) or mean SpO2(F < 1; β = 0.12). NART-estimated premorbid IQ scores with added demographic information also did not vary systematically with AHI (F < 1; β = −0.01) or mean SpO2 (F < 1; β = 0.15). This preliminary examination shows that the NART provides a stable estimate of premorbid intelligence across untreated OSA disease severity, as demarcated by AHI or mean nocturnal SpO2.",
keywords = "apnea, cognition, cognitive reserve, NART, OSA, premorbid IQ",
author = "Michelle Olaithe and Bucks, {Romola S.} and Peter Eastwood and David Hillman and Timothy Skinner and Alan James and Michael Hunter and Brandon Gavett",
year = "2019",
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doi = "10.1111/jsr.12958",
language = "English",
journal = "Journal of Sleep Research",
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AU - Eastwood, Peter

AU - Hillman, David

AU - Skinner, Timothy

AU - James, Alan

AU - Hunter, Michael

AU - Gavett, Brandon

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AB - Obstructive sleep apnea (OSA) is a widely prevalent disorder that can affect cognitive function. The relationship between cognitive function and OSA is known to be affected by an individual's premorbid cognitive ability. Tools to measure premorbid intelligence across OSA disease severity have not been validated. This brief report aims to establish if the National Adult Reading Test (NART) provides a stable estimate of premorbid intelligence across levels of OSA disease severity. We examined if NART scores varied systematically across levels of untreated OSA severity (defined according to the apnea–hypopnea index [AHI]) and mean oxygen saturation in sleep clinic (n = 121) and community samples (n = 398) using regression analysis. Simple linear regression was used to predict NART scores based on the AHI. NART-estimated premorbid IQ scores without demographics did not vary systematically with AHI (F < 1; β = 0.01) or mean SpO2(F < 1; β = 0.12). NART-estimated premorbid IQ scores with added demographic information also did not vary systematically with AHI (F < 1; β = −0.01) or mean SpO2 (F < 1; β = 0.15). This preliminary examination shows that the NART provides a stable estimate of premorbid intelligence across untreated OSA disease severity, as demarcated by AHI or mean nocturnal SpO2.

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