Table 1.

Performance Characteristics and Metrics for Videos of Standardized Patients

Clinical Factor	Somewhat Vigorous	Neither Vigorous nor Frail	Somewhat Frail
Weight loss	None	Shirt may appear somewhat loose; wearing oversized shirt	Both shirt and pants may appear loose; wearing oversized shirt and pants
Gait	Normal pace, medium stride	Slower pace, normal stride length	Slower pace, shortened stride
	Gait speed to chair 100 steps/min; 0.65 to 0.8 m/sec; 3–4 steps over 6-ft span	Gait speed to chair 85 steps/min; 0.5 to 0.6 m/sec; 4–5 steps over 6-ft span	Gait speed to chair 70 steps/min; 0.3 to 0.4 m/sec; 6–7 steps over 6-ft span
	Gait speed to table 90 steps/min; 0.6 to 0.7 m/sec; 2.5 steps over 4-ft span	Gait speed to table 75 steps/min; 0.5 to 0.6 m/sec; 3.5 steps over 4-ft span	Gait speed to table 60 steps/min; 0.4 to 0.5 m/sec; 4.5 steps over 4-ft span
Strength	Uses one hand for balance when sitting, standing, or climbing onto a step; time to sit and rise 1.5 sec each	Uses two hands for balance and aid when sitting and standing; slightly slow to climb onto step and turn; time to sit and rise 2.0 sec each	Some difficulty sitting and standing despite use of two hands; rocks back and forth before rising from a seated position; some difficulty in climbing onto and turning on step in order to sit on table; time to sit and rise 3.0 sec each
Fatigue	Moves without effort from chair to table	Moves somewhat slowly from chair to table; no evident fatigue	Some rapid breathing with moderate effort, appears tired, moves slowly from chair to table