Neuropsychologic functioning and health status in systemic lupus erythematosus: does ethnicity matter?
BACKGROUND
Despite increased severity of lupus in blacks, including more frequent neuropsychiatric manifestations, there is sparse data on neuropsychologic function in black patients with lupus.


METHODS
Neuropsychologic functioning and health-related variables were examined among blacks (n = 34) and whites (n = 14) fulfilling American College of Rheumatology criteria for systemic lupus erythematosus.


RESULTS
Blacks and whites performed comparably on measures of verbal and visual memory, working memory, and motor speed after controlling for estimates of premorbid cognitive ability. Blacks trended towards poorer performance on specific attention/processing speed measures. Pain, fatigue, depression, anxiety, physical and emotional well-being were unrelated to ethnicity. Blacks exhibited a trend towards greater impairment of physical functioning. Ethnicity-related differences in overall damage, noncognitive neuropsychiatric manifestations, and prevalence of nephritis revealed greater severity among blacks.


CONCLUSIONS
Initial differences in premorbid cognitive function possibly contribute to disparate clinical outcomes, including a greater proportion of blacks exhibiting subnormal neurocognitive performance. Blacks evidencing lower premorbid ability may be at greater vulnerability for poorer functional outcomes (eg, coping skills, medical compliance and employment) if they experience disease-related cognitive dysfunction.
Doninger
Nicholas A
NA
Department of Internal Medicine, The Wallace-Kettering Neuroscience Institute, Kettering Medical Center Network, Kettering, Ohio 45429, USA. nicholas.doninger@kmcnetwork.org
Fink
Joseph W
JW
Utset
Tammy O
TO
D000328:Adult; D044383:Black People; D002641:Chicago / Q000453:epidemiology; D003072:Cognition Disorders / Q000208:ethnology; D005260:Female; D006304:Health Status; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications / Q000208:ethnology*; D008297:Male; D009393:Nephritis / Q000209:etiology; D009483:Neuropsychological Tests; D010147:Pain Measurement; D012720:Severity of Illness Index; D044465:White People; D001741:Black or African American