Table D. Standard errors for inpatient medical expensesa for injury-related conditions, United States, 1997 Corresponds to Table 4 Injury-related inpatient expenses Expense per patient with expense Population characteristic Total in thousands Per capita Percent of total inpatient expenses due to injuryb Median Mean Standard error Total 3,074,015 11.4 1.4 361 1,195 Age in years Under 16 312,179 4.9 2.7 947 1,713 16-24 1,890,607 56.3 11.8 1,596 5,748 25-44 1,258,038 15.0 3.2 589 1,302 45-64 854,142 15.3 1.7 878 1,290 65 and over 2,055,873 60.1 2.2 870 2,843 Sex Male 2,886,688 21.9 2.8 636 1,909 Female 904,081 6.5 0.9 587 758 Race/ethnicity Hispanic 479,768 15.5 2.8 2,028 1,945 Black 330,467 9.7 1.7 792 956 White 3,213,791 16.6 1.8 472 1,544 Other 167,005 15.1 4.5 Ñ 2,539 Health insurance statusc Under age 65: Any private 1,974,686 11.3 2.1 700 1,273 Public only 513,717 18.8 2.5 658 1,583 Uninsured 1,722,535 51.9 15.1 3,483 9,812 Age 65 and over: Medicare only 257,915 29.9 1.3 1,140 1,281 Medicare and private 2,039,382 92.2 3.4 1,828 3,924 Medicare and other public 176,455 50.1 1.4 1,107 1,208 Poverty statusd Poor 718,637 19.5 2.1 833 1,648 Near-poor 290,564 24.0 2.0 2,932 1,785 Low income 670,616 17.3 2.3 687 1,377 Middle income 1,005,163 11.3 1.6 544 971 High income 2,594,223 27.5 4.0 1,218 3,689 aRoom and board and all hospital diagnostic and laboratory expenses associated with the basic facility charge, payments for separately billed physician inpatient services, and emergency room expenses incurred immediately prior to inpatient stays are included. Expenses for hospital discharges that did not involve an overnight stay, which are ambulatory expenses (Table 3), are excluded. Expenses for newborns who left the hospital on the same day as the mother are included in the motherÕs record. bNumerator is inpatient expenses for injuries. Denominator is total medical expenses for both injury- and non-injury-related conditions. cUninsured refers to persons uninsured during the entire year. Public and private health insurance categories refer to individuals with public or private insurance at any time during the period. Individuals with both public and private insurance and those with CHAMPUS or CHAMPVA (Armed-Forces-related coverage) are classified as having private insurance. dPoor refers to family incomes at or below the Federal poverty line; near-poor, over the poverty line through 125 percent of the poverty line; low income, over 125 percent through 200 percent of the poverty line; middle income, over 200 percent to 400 percent of the poverty line; and high income, over 400 percent of the poverty line. Note: Restricted to civilian noninstitutionalized population. Source: Center for Financing, Access, and Cost Trends, Agency for Healthcare Research and Quality: Medical Expenditure Panel Survey, 1997. dPoor refers to family incomes at or below the Federal poverty line; near-poor, over the poverty line through 125 percent of the poverty line; low income, over 125 percent through 200 percent of the poverty line; middle income, over 200 percent to 400 percent of the poverty line; and high income, over 400 percent of the poverty line. Note: Restricted to civilian noninstitutionalized population. Source: Center for Financing, Access, and Cost Trends, Agency for Healthcare Research and Quality: Medical Expenditure Panel Survey, 1997. a Room and board and all hospital diagnostic and laboratory expenses associated with the basic facility charge, payments for separately billed physician inpatient services, and emergency room expenses incurred immediately prior to inpatient stays areincluded. Expenses for hospital discharges that did not involve an overnight stay, which are ambulatory expenses (Table 3), are excluded. Expenses for newborns who left the hospital on the same day as the mother are included in the mother’s record. b Numerator is inpatient expenses for injuries. Denominator is total inpatient expenses for both injury- and non-injury-related conditions. c For health insurance status, uninsured refers to persons uninsured during the entire year. Public and private health insurance categories refer to individuals with public or private insurance at any time during the period. Individuals with both public and private insurance and those with CHAMPUS or CHAMPVA (Armed-Forces-related coverage) are classified as having private insurance. d Poor refers to family incomes at or below the Federal poverty line; near-poor, over the poverty line through 125 percent of the poverty line; low income, over 125 percent through 200 percent of the poverty line; middle income, over 200 percent to 400 percent of the poverty line; and high income, over 400 percent of the poverty line. *Relative standard error equal to or greater than 30 percent. Note: Restricted to civilian noninstitutionalized population. Source: Center for Financing, Access, and Cost Trends, Agency for Healthcare Research and Quality: Medical Expenditure Panel Survey, 1997.