Table 2.

Internal consistency (Cronbach’s alpha) of the EPELI measures

Measure	α (95% CI)a
Total score	0.70 [0.59, 0.79]
Task efficacy	0.83 [0.77, 0.88]
Navigation efficacy	0.74 [0.65, 0.81]
Controller motion	0.88 [0.85, 0.92]
Total actions	0.87 [0.82, 0.91]
TBPM	0.59 [0.45, 0.71]
Clock checks	0.72 [0.62, 0.80]
EBPM	0.33 [0.13, 0.54]

N = 77

^aA Bootstrap 95% Confidence Interval. TBPM, time-based prospective memory score. EBPM, event-based prospective memory score