Table 3. Regression analysis.
| Dependent variable: | |||
|---|---|---|---|
| (1) Open score β (SE) | (2) Closed score β (SE) | (3) Overall score β (SE) | |
| Study Arm 2 | 0.064 (0.04) | 0.014 (0.04) | 0.039 (0.04) |
| Study Arm 3 | 0.076** (0.02) | 0.010 (0.06) | 0.043 (0.03) |
| Age | 0.000 (0.00) | 0.000 (0.00) | 0.000 (0.00) |
| Female | 0.044 (0.05) | 0.008 (0.03) | 0.026 (0.03) |
| Income $25,000-$49,999 (Base: Income <$25,000) | 0.086 (0.04) | -0.012 (0.0) | 0.037 (0.02) |
| Income >=$50,000 (Base: Income <$25,000) | 0.101* (0.04) | -0.057 (0.06) | 0.022 (0.04) |
| Employed part-time (Base: Employed full time) | 0.034 (0.04) | -0.061 (0.05) | -0.013 (0.04) |
| Not employed Base: Employed full time | -0.034 (0.05) | -0.048 (0.04) | -0.041 (0.04) |
| Race – White (Base: Race – non-White) | 0.059 (0.05) | 0.029 (0.06) | 0.044 (0.05) |
| Good or excellent health (Base: Poor or fair health) | -0.004 (0.04) | 0.062 (0.03) | 0.029 (0.04) |
| High school reading level (REALM 4) (Base: Below high school reading level (REALM 1, 2, or 3)) | 0.083 (0.04) | 0.063 (0.03) | 0.073* (0.03) |
| Received consent form in advance | 0.033 (0.04) | -0.020 (0.07) | 0.006 (0.05) |
| Read consent form on own | 0.055 (0.04) | 0.044 (0.03) | 0.050 (0.05) |
| Showed consent form to others | 0.024 (0.04) | 0.039 (0.03) | 0.032 (0.03) |
| Past enrollment in a medical study | 0.057 (0.03) | 0.085 (0.04) | 0.071* (0.03) |
| Has medical insurance | -0.129 (0.06) | -0.056 (0.03) | -0.093* (0.04) |
| Constant | 0.598*** (0.04) | 0.681*** (0.09) | 0.639*** (0.04) |
| R-squared | 0.283 | 0.151 | 0.246 |
| Obs. | 136 | 136 | 136 |
*
p<0.05
**
p<0.01
***
p<0.001
Standard errors, in parentheses, are clustered at collaborating study level.