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Mean scores of students who took the pretest and posttest online
| Time spent (minutes) | Mean pretesta | Mean posttesta |
|---|---|---|
| 10 | 31.5 ± 2.1 (34) | 42.3 ± 2.1 (47) |
| 20 | 40.3 ± 2.7 (256) | 57.8 ± 1.2 (227) |
| 30 | 46.8 ± 2.8 (218) | 60.9 ± 1.1 (252) |
| 40 | 49.2 ± 2.8 (112) | 60.6 ± 1.9 (106) |
| >40 | 51.0 ± 1.8 (46) | 54.2 ± 2.7 (34) |
a Entries are indicated as average percentage scores ± SE, with number of students in parentheses.
