TABLE 1.
Participant characteristics
| Characteristics | N | Mean | SD | Range |
|---|---|---|---|---|
| Total | 43 | |||
| Boys | 32 | |||
| Girls | 11 | |||
| Age | 43 | 14.3 | 2.5 | 8.8 – 18.4 |
| SNAP* inattention | 43 | 16.0 | 6.3 | 4 – 27 |
| SNAP* hyperactivity | 43 | 11.9 | 6.5 | 1 – 27 |
| ADHD diagnosis severity** | light | medium | severe | |
| 43 | 8 | 27 | 8 | |
| ASD comorbidity | 12 |
TABLE 2.
Linear regression, auditory noise benefit with attention and hyperactivity scores as predictors.
| Model 1 | R | R2 | df | F value | p-values |
|---|---|---|---|---|---|
| Auditory noise benefit | .367 | .135 | 40 | 3.114 | .055 |
| Beta unstd | Beta std | t-values | |||
| Attention score* | 1.369 | 0.369 | 40 | 2.152 | .038 |
| Hyperactivity score* | −1.359 | −0.376 | 40 | −2.190 | .034 |
* Parent rated attention and hyperactivity scores after the SNAP instrument (21).
TABLE 3.
Linear regression, visual noise benefit with attention and hyperactivity scores as predictors.
| Model 2 | R | R2 | df | F value | p-values |
|---|---|---|---|---|---|
| Visual noise benefit | .382 | .146 | 40 | 3.407 | .043 |
| Beta unstd | Beta std | t-value | |||
| Attention score* | 1.105 | 0.396 | 40 | 2.327 | .025 |
| Hyperactivity score* | −1.024 | −0.377 | 40 | −2.211 | .033 |
* Parent rated attention and hyperactivity scores after the SNAP instrument (21)
FIGURE 1.
Illustrates the two visual white pixel noise levels, no noise, alpha 0 (A) and 50% noise, alpha 50 (B).
FIGURE 2.
Noise benefit in a visuo-spatial working memory task in visual (A) and auditory modalities (B) as a function of discrepancy score between hyperactivity and inattention assessed by the SNAP score.