Reading time and test performance
| Responding groups | No | % | Mean%2-150 | SD | x%min | x%max |
| Up to 2 h per month | 37 | 14 | 51.4 | 14.5 | 18.6 | 87 |
| Up to 1 h per week | 45 | 18 | 60.3 | 12 | 28.8 | 81.4 |
| 1–2 h per week | 108 | 43 | 60.6 | 12.4 | 28.8 | 86.4 |
| 3–4 h per week | 42 | 17 | 58.3 | 14.3 | 27.1 | 81.4 |
| More than 4 h per week | 21 | 8 | 56.1 | 12 | 28.8 | 79.7 |
| Total | 253 | 100 | 58.5 | 13.2 | 18.6 | 86.4 |
| Missing | 21 |
↵2-150 Analysis of variance, p <0.005.
x%min = minimum % correct answers; x%max = maximum % correct answers.