Patterns of hospital based ambulatory care.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000553:Ambulatory Care; D002648:Child; D003695:Delivery of Health Care; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005006:Ethnicity; D005260:Female; D005382:Financing, Personal; D006801:Humans; D007182:Income; D008297:Male; D008483:Medical Assistance; D009017:Morbidity; D009518:New York; D010044:Outpatient Clinics, Hospital / Q000706:statistics & numerical data*; D012017:Referral and Consultation; D012737:Sex Factors