Test Parameter Computer-Familiar Computer-Naïve Mann-Whitney U-test Median (range) Median (range) pvalue GPTD baseline 0.31 (0.31-3.93) 0.31 (0.31-3.30) 0.47 GPTD repeat 0.31 (0.31-3.11) 0.31 (0.31-2.80) 0.97 FP baseline (%) 0.00 (0-9) 0.00 (0-12) 0.01 FP repeat (%) 0.00 (0-5) 0.00 (0-11) 0.00 TT baseline (secs) 105 (89-218) 107(87-269) 0.33 TT repeat (secs) 103 (90-195) 103 (90-221) 0.47 GPTD: Global Probability of True Defect; FP: False Positive; TT: Test Time; SD: Standard Deviation.

Table 1: Test performance measures stratified according to computer experience, including Mann-Whitney U test comparison of performance between groups.