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

TY - JOUR

T1 - A brief report: The National Adult Reading Test (NART) is a stable assessment of premorbid intelligence across disease severity in obstructive sleep apnea (OSA)

AU - Olaithe, Michelle

AU - Bucks, Romola S.

AU - Eastwood, Peter

AU - Hillman, David

AU - Skinner, Timothy

AU - James, Alan

AU - Hunter, Michael

AU - Gavett, Brandon

PY - 2020/4/1

Y1 - 2020/4/1

N2 - 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.

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.

KW - apnea

KW - cognition

KW - cognitive reserve

KW - NART

KW - OSA

KW - premorbid IQ

U2 - 10.1111/jsr.12958

DO - 10.1111/jsr.12958

M3 - Journal article

C2 - 31782212

SN - 0962-1105

JO - Journal of Sleep Research

JF - Journal of Sleep Research

M1 - e12958

ER -