Table 1.
Within Subject Means and Correlations Comparing Individual TLFB to Online TLFB
| In-person administration |
Online administration |
||||
|---|---|---|---|---|---|
| M | (SD) | M | (SD) | Pearson’s correlation coefficient | |
| Past month | |||||
| Total drinks | 23.26 | (28.34) | 24.76 | (33.34) | 0.94 |
| Drinking days | 4.94 | (4.55) | 4.88 | (4.78) | 0.91 |
| Average drinks | 4.43 | (2.14) | 4.78 | (2.41)* | 0.87 |
| Peak drinks | 6.81 | (4.19) | 6.92 | (4.40) | 0.88 |
| Days used marijuana | 3.24 | (7.00) | 3.79 | (7.68)* | 0.97 |
| Past 3 months | |||||
| Total drinks | 67.16 | (81.89) | 66.59 | (81.85) | 0.95 |
| Drinking days | 13.97 | (13.65) | 13.47 | (13.61) | 0.93 |
| Average drinks | 4.27 | (2.01) | 4.50 | (2.14)* | 0.92 |
| Peak drinks | 8.00 | (4.51) | 8.09 | (4.59) | 0.90 |
| Days used marijuana | 8.34 | (17.63) | 10.01 | (20.74)* | 0.96 |
| Assessment characteristics | |||||
| Comfort level | 3.02 | (1.16) | 3.45 | (0.98)* | 0.53 |
| Difficulty remembering | 2.08 | (1.07) | 2.04 | (1.20) | 0.53 |
Note. All correlations significant at p < .001.
*
Significant difference between in-person and online administration (see text).