Table 1.
Influence of checklists on eye tracking variables related to enhanced analytic scrutiny during diagnostic verification
| Measure | Hypothesis comparing checklists (CH) versus analytic prompts (AP) | Data | ||||
|---|---|---|---|---|---|---|
| Verification with checklist µ ± SD | Verification with analytic prompt µ ± SD | F 1,15 | p | η 2 | ||
| Task time (seconds) | CH > AP | 32 ± 21 | 21 ± 15 | 11.8 | .004 | .24 |
| Number of fixations | CH > AP | 88 ± 71 | 52 ± 37 | 16.8 | .001 | .23 |
| Scan path length (megapixels) | CH > AP | 13.1 ± 8.8 | 7.9 ± 4.8 | 12.4 | .003 | .23 |
| Ratio of intra to extra lead saccades | CH > AP | 8.1 ± 5.4 | 6.1 ± 4.5 | 10.0 | .006 | .07 |
| Ratio of local to global saccades (i.e. saccades <1.1° vs. >1.1°) | CH > AP | .37 ± .12 | .33 ± .14 | 6.5 | .02 | .04 |
| Proportion of the 12 leads with at least one fixation | CH > AP | .65 ± .20 | .55 ± .23 | 21.3 | .001 | .08 |