Table 1.
Demographic and screening data for placebo and WBB participants
| Placebo (n = 25) | WBB (n = 29) | ||||
|---|---|---|---|---|---|
| Mean | SD | Mean | SD | P statistic | |
| Age | 8.23 | 1.05 | 8.24 | 0.88 | 0.97 |
| Gender (M:F)a | 13:12 | – | 12:17 | – | – |
| School year (3:4:5) | 8:7:8 | – | 8:7:10 | – | – |
| CPT | (n = 22) | (n = 28) | |||
| Omissions (%) | 10.74 | 7.14 | 11.21 | 16.03 | 0.90 |
| Commissions (%) | 88.48 | 8.21 | 89.17 | 15.62 | 0.85 |
| RCPM |
(n = 22) 26.55 |
6.10 |
(n = 27) 26.78 |
4.40 | 0.88 |
| YARC | |||||
| Reading accuracy | (n = 24) | (n = 27) | |||
| Raw scores | 14.5 | 7.93 | 17.48 | 9.14 | 0.32 |
| Standard scores | 103.37 | 16.96 | 107.74 | 11.27 | 0.28 |
| Reading rate | |||||
| Raw scores (ms) | 286.36 | 92.69 | 293.44 | 90.07 | 0.45 |
| Standard scores | 107.09 | 15.72 | 109.81 | 11.73 | 0.50 |
| Reading comprehension | |||||
| Raw scores | 11.36 | 2.88 | 11.33 | 2.13 | 0.96 |
| Standard scores | 111.12 | 17.81 | 115.51 | 13.82 | 0.32 |
| SWRT | |||||
| Raw scores | 40.25 | 11.82 | 45.18 | 8.89 | 0.09 |
| Standard scores | 103.91 | 19.56 | 111.4 | 13.73 | 0.07 |
No significant differences between treatment groups were seen for the demographic measures or performance of the CPT, RCPM, YARC or SWRT. YARC standard scores: mean = 100, SD = 15
aNo significant differences were observed between the number of males and females in each treatment group (males, χ2 = 0.15, p = 0.70; females, χ2 = 0.86, p = 0.35)