Table 2.

The distribution of the primary variables of interest in the subgroup of patients divided by the racea

Asian(n = 3,127)Black(n = 21,393)White(n = 65,214)Total(n = 92,844)
Recipient education level
    none25 (0.8)62 (0.3)205 (0.3)318 (0.3)
    grade to high school: grades 0 to 12536 (17.1)4,999 (23.4)14,528 (22.3)20,410 (22.0)
    some college to bachelor’s degree565 (18.1)2,684 (12.6)9,942 (15.3)13,384 (14.4)
    postcollege graduate degree116 (3.7)263 (1.2)1,301 (2.0)1,728 (1.9)
    N/A: <5 yr old12 (0.4)51 (0.2)347 (0.5)419 (0.5)
    missing or unknown1,873 (59.9)13,334 (62.3)38,891 (59.6)56,585 (61.0)
Primary source of payment
    Medicare1,135 (36.3)9,424 (44.1)22,733 (34.9)34,484 (37.1)
    Medicaid115 (3.7)721 (3.4)1,319 (2.0)2,259 (2.4)
    US/state government agency40 (1.3)205 (1.0)482 (0.7)764 (0.8)
    private insurance621 (19.9)2,715 (12.7)13,593 (20.8)17,775 (19.2)
    HMO/PPO52 (1.7)124 (0.6)477 (0.7)703 (0.8)
    other8 (0.3)67 (0.3)152 (0.2)239 (0.3)
    missing1,156 (37.0)8,137 (38.0)26,458 (40.6)36,620 (39.4)
Registered patients’ citizenship
    US citizen2,606 (83.3)20,720 (96.85)62,064 (95.2)86,628 (93.3)
    resident alien374 (12.0)164 (0.77)1,292 (2.0)1,955 (2.1)
    nonresident alien29 (0.9)16 (0.07)83 (0.1)147 (0.2)
    missing or unknown118 (3.8)493 (2.3)1,775 (2.7)4,114 (4.4)
  • a Values are presented as an absolute number of patients (percentage of the subgroup). All of the differences between the subgroups using ANOVA for the continuous variables and χ2 for the categorical variables are statistically significant (P < 0.001). HMO/PPO, health maintenance organization/preferred provider organization.