Physical activity after total knee arthroplasty: A critical review

Table 2 Outcome measure reliability and validity

Outcome measure	Reliability	Validity
Grimby’s Scale	N/A	N/A
Historical Leisure Activity Questionnaire	r = 0.690-0.870[54,59]	r = 0.26[54]
LEAS	r = 0.9147[45]	r = 0.79[45]
PASE	ICC = 0.77[60]	r = 0.06-0.45[51]
PASIPD	r = 0.77[53]	r = 0.30[53]
Perception	N/A	N/A
Short Questionnaire to Assess Health Enhancing Physical Activity	r = 0.77[61]	r = 0.45[30]
UCLA	r = 0.86[49]	r = -0.50 – 0.51[62]
Activity Monitor	r2 = 0.98[57]	r2 = 0.91[56]

LEAS: Lower Extremity Activity Scale; PASE: Physical Activity Scale for the Elderly; PASIPD: Physical activity scale for individuals with physical disabilities.