Characteristics of callers and noncallers to an ambulatory care hotline.
D003258:Consumer Behavior; D005431:Florida; D006746:Hospital Bed Capacity, 500 and over; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000523:psychology; D010044:Outpatient Clinics, Hospital / Q000706:statistics & numerical data*; D011897:Random Allocation; D013689:Telephone / Q000706:statistics & numerical data*; D014481:United States; D014493:United States Department of Veterans Affairs