| Activity/attention | # Limit | % Limit | Sub. rate |
| Low/low | 51 | 22.13% | 49.70% |
| Low/high | 22 | 13.50% | 57.77% |
| Difference in means | 29 | 8.63% | −8.07% |
| P-value | 0.10 | 0.05 | 0.29 |