Table 4.
Demographic data were collected from respondents to uncompensated (RPPS-U, RPPS-S and RPPS-L) and compensated (RPPS-SC1, RPS-SC2 combined) surveys fielded to a national registry. Compensated respondents were younger (p<0.001) and more often Persons of Color (p=0.03) than were uncompensated respondents.
| Sample | RPPS-U | RPPS-S | RPPS-SC1, RPPS-SC2 combined |
RPPS-L | National Registry* |
|---|---|---|---|---|---|
| N | 301 | 266 | 202 | 227 | 69,111 |
| Female | 237 (79%) | 194 (73%) | 150 (74%) | 169 (74%) | (71%)** |
| Male | 63 (21%) | 70 (26%) | 51 (26%) | 58 (26%) | (29%) |
| Transgender | 1 (0.3%) | 2 (0.8%) | 1 (1%) | 0 (0%) | Not reported |
| White | 262 (87%) | 230 (86%) | 160 (79%)+ | 199 (88%) | (78.2%)*** |
| Africa American | 24 (8%) | 24 (9%) | 26 (13%) | 11 (5%) | (10.8%) |
| Asian | 5 (1.7%) | 6 (2%) | 7 (4%) | 4 (2%) | (3.5%) |
| American Indian/Alaska | 1 | 1 | 1 | 2 | |
| Native | (0.3%) | (0%) | (1%) | (1%) | (0.6%) |
| Multi-racial | 9 (3.0%) | 5 (2%) | 7 (4%) | 11 (5%) | (4.1%) |
| Native Hawaiian/Pacific Islander | 0 (0%) | 0 (0%) | 1 (1%) | 0 (0%) | (0.2%) |
| Hispanic | 6 (2%) | 14 (5%) | 11 (6%) | 8 (4%) | (7%) |
| Age | |||||
| 18–34 | 69 (22.9%) | 68 (25.6%) | 96 (47.5%)++ | 62 (27.3%) | |
| 35–44 | 40 (13.3%) | 40 (15.0%) | 31 (15.3%) | 36 (15.4%) | |
| 45–54 | 60 (19.9%) | 55 (20.7%) | 36 (17.8%) | 37 (16.3%) | |
| 55–64 | 80 (26.6%) | 53 (19.9%) | 27 (13.4%) | 68 (30%) | |
| 65 and over | 52 (17.3%) | 50 (18.8%) | 12 (5.9%) | 25 (11.0%) | |
| Education | |||||
| Some high school | 1 (0.3%) | 0 (0%) | 2 (1%) | 0 (0%) | |
| High school diploma or GED | 8 (2.7%) | 11 (4.1%) | 6 (3%) | 11 (4.9%) | |
| Some college or 2-year degree | 63 (20.9%) | 72 (27.1%) | 55 (27.2%) | 50 (22.%) | |
| 4-year college graduate | 75 (24.9%) | 68 (25.6%) | 47 (23.3%) | 70 (30.8%) | |
| More than 4-year college degree | 154 (51.2%) | 115 (43.2%) | 92 (45.5%) | 96 (42.3%) |
Registry privacy policies did not permit retention of the demographic data for individuals who did not consent to the survey. The contemporaneous demographics of the registry overall are shown in place of non-responder demographics. Registry enrollment grew from approximately 69,000 to 75,000 during the fielding of the survey.
Application of a Binomial test showed that the proportion of females in the surveys 750–996 is significantly higher than the proportion in the National Registry (71%), p-value =0.003
Application of the Binomial test has showed that the proportion of Whites in the uncompensated surveys (691/794) is significantly higher when compared to the National Registry (78.2%), p-value<0.001.
More Persons of Color responded to compensated surveys, than to uncompensated surveys (p=0.03).
More respondents came from the 18–35-year-old age group for compensated surveys than for uncompensated surveys (p<0.001).