Variables Age 35-64years Age ≥ 65years No Dementia %/Mean SE Dementia %/Mean SE No Dementia %/Mean SE Dementia %/Mean SE n 232,961,023 221,071 114,547,361 7,219,708 Age 50.03[0.32] 58.59[0.04] 77.4[0.03] 83[0.03] Gender         Male 45.6 53.8 42.9 35.7 Female 54.3 46.2 57.1 64.3 Primary payer         Medicare 16.9 49.3 89.3 92.8 Medicaid 15.8 23.3 1.5 1.4 Private* 53.8 21.3 7.8 4.7 Other 13.5 6.1 1.4 1.1 Race/Ethinicity         White 71.4 65.1 84.4 82.4 African American 17.8 24.7 9.1 11.2 Hispanic 10.8 10.2 6.6 6.4 Total in-Hospital Charge $23,689.94 [338] $25,050.28 [524] $26,048.05 [343] $20,229.44 [315] Length of Hospital Stay  (mean days) 4.72[0.03] 8.50[0.11] 5.68[0.03] 6.50[0.05] *=including HMO All p-values are statistically significant using p<0.05 as the level of statistical significance

Table 1: Baseline characteristics of NIS subjects Aged 35-64 and ≥ 65 years old with and without ICD-9 CM diagnosis of Dementia.