Table 1.
Descriptive statistics on call completion, risk and protective scores, and urine drug screen outcomes for non-incentivized and incentivized participants.
| Non-incentivized | Incentivized | |
|---|---|---|
|
| ||
| Mean (SD) calls completed | ||
|
| ||
| Q1 | 4.80 (3.48) | 7.80 (3.22) |
| Q2 | 2.91 (3.16) | 4.60 (3.34) |
| Q3 | 2.14 (2.66) | 4.02 (3.10) |
| Q4 | 1.41 (2.26) | 4.07 (3.24) |
|
| ||
| Mean (SD) risk score | ||
|
| ||
| Q1 | 1.68 (1.41) | 1.63 (1.31) |
| Q2 | 1.82 (1.52) | 1.97 (1.91) |
| Q3 | 1.67 (1.76) | 1.79 (1.72) |
| Q4 | 1.90 (2.07) | 1.80 (1.86) |
|
| ||
| Mean (SD) protective score | ||
|
| ||
| Q1 | 7.08 (2.04) | 6.98 (1.97) |
| Q2 | 6.75 (2.18) | 7.28 (2.19) |
| Q3 | 6.48 (2.11) | 7.26 (1.98) |
| Q4 | 6.88 (1.96) | 7.11 (2.42) |
|
| ||
| Percent positive urine drug screen (missing data ignored) | ||
|
| ||
| Q1 | 22.95 | 20.00 |
| Q2 | 22.41 | 27.14 |
| Q3 | 27.78 | 30.88 |
| Q4 | 31.48 | 26.87 |
|
| ||
| Percent positive urine drug screen (missing data = positive) | ||
|
| ||
| Q1 | 36.49 | 28.57 |
| Q2 | 39.19 | 39.29 |
| Q3 | 47.30 | 44.05 |
| Q4 | 50.00 | 41.67 |