Table 13_2_2-1 2010 National Healthcare Quality and Disparities ReportsThe National Healthcare Quality Report (NHQR) is a comprehensive national overview of quality of health care in the United States. It is organized around four dimensions of quality of care: effectiveness, patient safety, timeliness, and patient centeredness. Table 13_2_2.1Emergency department visits where patients left without being seen,a United States, 2007-2008 2007-2008Population groupSample sizeNumber of visits (in thousands)PercentSETotal 69,624240,5632.70.2Age0-1715,36754,7722.70.218-4428,87798,1693.40.245-6415,02350,8272.60.265 and over10,35736,7960.70.1RacebWhite only48,830174,5762.30.2Black only17,06656,8553.90.3Asian only2,030DSU1.80.5NHOPIDSUDSUDSUDSUAI/ANDSUDSUDSUDSUMultiple racesDSUDSUDSUDSUGenderMale32,267110,3742.70.2Female37,357130,1902.60.2Payment source,c under age 65Private23,38384,0781.90.1Public19,51860,1832.90.2Uninsured10,35636,5904.60.4Payment source,c over age 65Medicare and private4,58916,4020.60.1Medicare and MedicaidDSUDSUDSUDSUMedicare only3,92214,1420.60.1Location of hospitalMetropolitan60,685201,8092.90.2Nonmetropolitan8,93938,7551.30.2a Population used for rate calculation is U.S. Census Bureau estimated civilian noninstitutional population on July 1, 2007, and July 1, 2008.b Race data were missing for 15.5% of total visits. Missing race data were imputed. Standard errors for estimates by race were inflated as described in "2007 NAMCS Microdata File Documentation," ftp://ftp.cdc.gov/pub/Health_Statistics/NCHS/Dataset_Documentation/NAMCS/doc07.pdf.c Payment source classified by all expected payment sources. Public insurance includes Medicare, Medicaid, and State Children's Health Insurance program. No insurance is defined as having only "self-pay" or "no charge/charity" as payment sources.DSU - Data do not meet the criteria for statistical reliability, data quality, or confidentiality.Key: AI/AN: American Indian or Alaska Native; NHOPI: Native Hawaiian or Other Pacific Islander; SE: standard error.Source: Centers for Disease Control and Prevention, National Center for Health Statistics, National Hospital Ambulatory Medical Care Survey. Current as of February 2011 Internet Citation: Table 13_2_2-1: 2010 National Healthcare Quality and Disparities Reports. February 2011. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/nhqrdr/nhqrdr10/13_timeliness/T13_2_2-1.html