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Blind working time during a 20‐min period
| Subject number | Age (y) | Frequency | Mean duration (s) | Total duration (s) | Proportion of total time (%) |
|---|---|---|---|---|---|
| 1 | 40 | 9 | 12.3 ± 8.0 | 110.8 | 9.2 |
| 2 | 40 | 10 | 7.2 ± 8.1 | 71.9 | 6.0 |
| 3 | 28 | 6 | 3.6 ± 1.4 | 21.7 | 1.8 |
| 4 | 52 | 4 | 5.2 ± 2.4 | 20.6 | 1.7 |
| 5 | 51 | 5 | 11.8 ± 8.1 | 58.8 | 4.9 |
| 6 | 38 | 19 | 2.7 ± 0.9 | 51.1 | 4.3 |
| 7 | 30 | 4 | 17.3 ± 16.5 | 69.3 | 5.8 |
| 8 | 48 | 9 | 13.4 ± 5.2 | 121.0 | 10.1 |
| 9 | 33 | 4 | 7.4 ± 5.0 | 29.3 | 2.4 |
| 10 | 46 | 4 | 5.5 ± 1.0 | 22.0 | 1.8 |
