Table 3.
Self-Reported Race for PRISM Study Participants Compared With Unweighted and Weighted E-Tech–Estimated Sample Frames, North Carolina, 2005
| Race | PRISM Participants (Self-Reported Race) (n = 3490) % (95% CI) | Unweighted PRISM Frame (E-Tech-Estimated Race)a (N = 26,688) % (95% CI) | Weighted PRISM Frame (Adjusted E-Tech-Estimated Race)b (N = 26,688) % (95% CI) |
|---|---|---|---|
| Black | 10.7 (9.7-11.7) | 9.2 (8.8-9.5) | 13.4 (13.0-13.8) |
| White | 89.3 (88.3-90.3) | 90.8 (90.4-91.2) | 86.6 (86.2-87.0) |
PRISM indicates Personally Relevant Information About Screening Mammography; CI, confidence interval. N values are actual (unweighted) values whereas proportions are weighted proportions.
a
PRISM participants compared with E-Tech–estimated PRISM frame: z = 3.10, P = .002.
b
PRISM participants compared with weighted E-Tech–estimated PRISM frame: z = −4.65, P < .001. Unweighted E-Tech–estimated PRISM frame compared with weighted E-Tech–estimated frame: z = 23.97, p < .001.