Table 1.

Characteristics of the Patient Population (n = 32,682)

Characteristics*Patients with Service Agreement (N = 21,699)Patients without Service Agreement (N = 10,983)P Value
n (%)n (%)
Female13,097 (60.4)6,553 (59.7).23
Age group<.01f
    18 to 39 years1,109 (5.1)1,172 (10.7)
    40 to 59 years7,386 (34.0)4,343 (39.5)
    60 to 79 years10,261 (47.3)3,988 (36.3)
    80 years and older2,943 (13.6)1,480 (13.5)
Education level<.01f
    < High school5,295 (24.4)2,451 (22.3)
    High school and some college9,038 (41.7)4,354 (39.6)
    Bachelor's degree and higher7,366 (33.9)4,178 (38.0)
Married19,382 (89.3)9,665 (88.0)<.01f
Employed10,427 (48.1)5,146 (46.9).04
Insured18,725 (86.3)8,391 (76.4)<.01f
Comorbidity, mean ± SE2.6 ± 1.71.4 ± 1.5<.01f
Primary care visits, mean ± SE10 ± 8.24.2 ± 5.0<.01f
  • SE, standard error.

  • * Values are number of subjects (weighted proportion) for categorical variables or weighted means (SE) for continuous variables.

  • P values were calculated from χ2 analysis or t-test (normally distributed) or Mann-Whitney U/Wilcoxon test (abnormally distributed) for continuous variables.

  • P < .05; fP < .01.