| Break off rate (%) |
10.1 |
8.2 |
10.8 |
9.3 |
8.5 |
| (n) |
(397) |
(413) |
(381) |
(354) |
(353) |
|
|
|
|
|
|
| Completion time (minutes) |
10.17 |
10.17 |
9.85 |
9.51 |
9.52 |
| Any use of Previous button (%) |
21.9 |
19.5 |
5.0 |
6.9 |
5.3 |
| Rate of Previous button use (%) |
1.12% |
1.13% |
0.38% |
0.36% |
0.19% |
| Rate of Previous button use for grid items (%) |
2.55% |
2.04% |
0.54% |
0.27% |
0.16% |
| Rate of Previous button use for non-grid items (%) |
1.07% |
1.30% |
0.43% |
0.43% |
0.27% |
| (n) |
(374) |
(397) |
(353) |
(334) |
(343) |