Table 2 Between group comparisons of performance scores (seconds/number of clicks) according to difficulty levels and settings. Note that number of participants analyzed at each difficulty level and setting is different since only successfully completed trials were included
From: Effect of age on spatial memory performance in real museum vs. computer simulation
Condition/setting | Young | Older | Mann Whitney | ||||
|---|---|---|---|---|---|---|---|
N | Median (IQR) | Mean (SD) | N | Median (IQR) | Mean (SD) | U (p) | |
On-Site setting | |||||||
 Four targets | 20 | 7.13 (6.38–8.2) | 7.76 (1.99) | 16 | 11.38 (9.46–13.64) | 12.81 (6.98) | 36.5 (.0001) |
 Five targets | 20 | 7.43 (6.78–9.28) | 7.96 (1.63) | 10 | 13.11 (9.63–17.96) | 14.85 (7.01) | 18.0 (.0001) |
 Six targets | 18 | 7.52 (6.63–8.41) | 7.65 (1.26) | 13 | 10.27 (9.15–16.68) | 13.17 (6.22) | 22.0 (.0001) |
 Mean of successful trials |  | 7.48 (6.88–8.66) | 7.79 (1.26) |  | 11.64 (9.78–15.92) | 12.94 (4.78) | 26.0 (.0001) |
Simulation setting | |||||||
 Four targets | 20 | 1.33 (1.09–1.67) | 1.40 (0.38) | 17 | 2.35 (1.83–3.41) | 2.65 (1.11) | 27.0 (.0001) |
 Five targets | 20 | 1.23 (1.07–1.70) | 1.38 (0.53) | 14 | 1.94 (1.71–2.37) | 2.11 (0.63) | 41.0 (.001) |
 Six targets | 20 | 1.28 (1.04–1.69) | 1.40 (0.49) | 13 | 1.93 (1.71–2.41) | 2.05 (0.43) | 36.0 (.001) |
 Mean of successful trials |  | 1.20 (1.12–1.57) | 1.39 (0.43) |  | 2.23 (1.89–2.71) | 2.31 (0.57) | 30.0 (.0001) |