Table 3. Participant Characteristics.
|
DD.com sub-sample n=316 (313 provided data) |
DD.com only n=156 (154 provided data) |
DD.com plus MI (n=160) (159 provided data) |
||
|---|---|---|---|---|
|
| ||||
| Mean (SD) | Mean (SD) | Mean (SD) | ||
|
| ||||
| Age | 40.60 (12.84) | 40.23 (12.19) | 40.96 (13.47) | |
|
| ||||
| Miles driven annually | ||||
| 1,001 to 5,000 | N=6 | N=2 | N=4 | |
| 5,001 to 10,000 | N=86 | N=44 | N=42 | |
| 10,001 to 14,000 | N=86 | N=43 | N=43 | |
| 14,001 to 16,000 | N=135 | N=65 | N=70 | |
|
| ||||
| Years with T1DM | 24.67 (13.81) | 23.86 (14.01) | 25.46 (13.62) | |
|
| ||||
| Risk score* | .451 (.172) | .460 (.176) | .443 (.167) | |
|
| ||||
| n (%) | n (%) | n (%) | ||
|
| ||||
| Sex | ||||
| Male | N=222 | N=103 | N=119 | |
| Female | N=91 | N=51 | N=40 | |
|
| ||||
| Race | ||||
| White | N=297 | N=144 | N=153 | |
| Black | N=6 | N=4 | N=2 | |
| Asian | N=4 | N=3 | N=1 | |
| Native | N=2 | N=0 | N=2 | |
| Multiracial | N=4 | N=3 | N=l | |
|
| ||||
| Ethnicity | ||||
| Hispanic | N=11 | N=7 | N=4 | |
| Non-Hispanic | ||||
|
| ||||
| Education | ||||
| High school graduate | N=43 | N=26 | N=17 | |
| Associate degree | N=48 | N=20 | N=28 | |
| Bachelor's degree | N=142 | N=66 | N=76 | |
| Master's degree | N=63 | N=33 | N=30 | |
| Doctoral degree | N=17 | N=9 | N=8 | |
|
| ||||
| Income Group | ||||
| Less than $10,000 | 12 | 6 | 6 | |
| $10,000 - $24,999 | 18 | 12 | 6 | |
| $25,000 - $49,999 | 56 | 31 | 25 | |
| $50,000 - $74,999 | 69 | 35 | 34 | |
| $75,000 - $99,999 | 53 | 25 | 28 | |
| $100,000 - $149,999 | 69 | 31 | 38 | |
| $150,000 - $199,999 | 20 | 7 | 13 | |
| $200,000 or more | 16 | 7 | 9 | |
•
255 of the 316 people randomized to DD.com or to MI plus DD.com had risk scores on the RADD that placed them in the category of high risk for future driving mishaps, while 61 were not in the high risk category.