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          1. 
            Following an episode of major depressive illness, ten percent of people 
            develop a chronic depressive illness. | 
        
         
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            2. Inadequate treatment during the acute episode increases the risk 
            of chronic depression. | 
        
         
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          3. 
            Chronic depression is more common in people with a family history 
            of depression. | 
        
         
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          4. 
            Chronic depression is more common in patients with a late age of onset. 
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          5. 
            Chronic depression is less likely when the acute illness is severe. |