Nowell, P D <br/><br/>
Clinical factors contributing to the differential diagnosis of primary insomnia and insomnia related to mental disorders.  [electronic resource] 

 -  The American journal of psychiatry  Oct 1997 
 - 1412-6 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0002-953X 
<br/><br/><label>Standard No.: </label>10.1176/ajp.154.10.1412  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Analysis of Variance<br/>Comorbidity<br/>Diagnosis, Differential<br/>Factor Analysis, Statistical<br/>Humans<br/>Mental Disorders--diagnosis<br/>Middle Aged<br/>Psychiatric Status Rating Scales--statistics & numerical data<br/>Reproducibility of Results<br/>Sleep--physiology<br/>Sleep Initiation and Maintenance Disorders--diagnosis