Table 1 Participant demographic characteristics
|  | Included Subjects (CR < .18) N = 247 N (%) | Excluded Subjects (CR > .18) N = 309 | p-values χ2 |
Categorical Variables | |||
 Age | |||
   < 50 | 160 (65) | 190 (61.5) | 0.389 |
   50+ | 86 (35) | 119 (38.5) |  |
 Gender | |||
  Woman | 157 (63.6) | 182 (58.9) | 0.256 |
  Man | 90 (36.4) | 127 (41.1) |  |
 Race | |||
  White / Caucasian | 198 (80.2) | 268 (86.7) | 0.037 |
  Not white/Caucasian | 49 (19.8) | 41 (13.3) |  |
 Education categories | |||
  HS or less | 45 (18.2) | 51 (16.6) | 0.474 |
  Some college | 65 (26.3) | 88 (28.6) |  |
  College graduate | 88 (35.6) | 95 (30.8) |  |
  Some graduate school / Graduate degree | 49 (19.8) | 74 (24.0) |  |
 Relationship | |||
  Single | 93 (37.7) | 110 (35.8) | 0.769 |
  Relationship / cohabitating | 35 (14.2) | 50 (16.3) |  |
  Married | 119 (48.2) | 147 (47.9) |  |
 Income | |||
   < 30 k | 52 (21.1) | 54 (17.5) | 0.472 |
  30 k to 59,999 | 72 (29.3) | 102 (33) |  |
  60 k to 89,999 | 63 (25.6) | 70 (22.7) |  |
   > 90 k | 59 (24) | 83 (26.9) |  |
 Insurance | |||
  No | 38 (15.4) | 48 (15.7) | 0.751 |
  Private | 166 (67.2) | 212 (69.3) |  |
  Public | 43 (17.4) | 46 (15.0) |  |
| Â | Mean (SD) | Mean (SD) | ANOVA |
Continuous Variables | |||
 Health literacy | 18.15 (2.2) | 17.63 (2.7) | 0.014 |
 Subjective numeracy | 4.59 (.97) | 4.67 (.90) | 0.302 |
 Decisional self-efficacy | 82.2 (16) | 80.0 (15.9) | 0.107 |