J Natl Med Assoc
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Comparative Study
Sleep duration among black and white Americans: results of the National Health Interview Survey.
Epidemiologic studies have shown the importance of habitual sleep duration as an index of health and mortality risks. However, little has been done to ascertain ethnic differences in sleep duration in a national sample. This study compares sleep duration in a sample of black and white participants in the National Health Interview Survey (NHIS). ⋯ Independent of several sociodemographic and medical factors, blacks had more prevalent short and long sleep durations, suggesting greater variation in habitual sleep time. Therefore, blacks might be at increased risks of developing medical conditions associated with short and long sleep.
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Cholestasis occurring in infancy should be evaluated completely to exclude hepatic as well as endocrine or metabolic causes. A rapid diagnosis should be made to ensure that hepatic and neurologic complications are prevented. We describe a rare case of infant cholestasis due to panhypopituitarism resulting in hypoglycemia and liver biopsy findings consistent with bile duct paucity. ⋯ Hypoglycemia and cholestasis resolved with treatment of the underlying panhypopituitarism. Panhypopituitarism should be considered in any infant who presents with cholestasis, hypoglycemia, and other manifestations of pituitary malfunction. Growth hormone deficiency may affect bile duct formation as demonstrated in this patient.