Excessive daytime sleepiness, nocturnal sleep duration and psychopathology among Nigerian university students

<p><strong>Background and objectives.</strong> Short nocturnal sleep duration resulting in sleep debt may be a cause of excessive daytime sleepiness (EDS). Severity of depression (psychopathology) has been found to be directly related to EDS. There is an association between sleep duration and mental health, so there may therefore be an interrelationship between sleep duration, EDS and psychopathology. The objectives of this...