Table 1.

Participant characteristics at baseline, sample size indicated if data is missing

	All Participant (N=43)	Intervention (N=20)	Control (N=23)
	Mean ± SD or % (n)	Mean ± SD or % (n)	Mean ± SD or % (n)	p-value
Age (years)	67.0 ± 7.0	66.5 ± 6.9	67.5 ± 7.2	0.5
Women	53.4% (23)	40.0% (8)	65.2% (15)	0.1
BMI (kg/m2) (n=40)	31.5 ± 5.9	31.1 ± 5.6	32.0 ± 6.3	0.6
Education (≥College)	51.3% (20)	55.0% (10)	47.6% (10)	0.6
White (Other)	91% (39)	95% (19)	87% (20)	0.7
Time post-TKR to PT (days)	13.8 ± 21.3	9.6 ± 7.0	*18.0 ± 35.9	0.3
Total number of PT visits (n=39)	19 ± 8	20 ± 8	18 ± 7	0.4
Duration of PT in weeks (n=39)	9.7 ± 3.4	10.4 ± 5.5	9.0 ± 2.7	0.3
Unilateral TKR side (right)	52.7% (22)	75.0% (15)	30.4% (7)	<0.004
Comorbidity (≥1) (n=42)	50.3% (21)	55.0% (11)	45.5% (10)	0.4
Knee pain at worst (VAS)	6.5 ± 2.9	6.5 ± 2.8	6.6 ± 3.0	0.9
Knee flexion (degrees) (n=42)	85.4 ± 31.4	76.3 ± 36.2	94.5 ± 26.6	0.07
Knee extension^ (degrees) (n=42)	5.7 ± 4.4	5.5 ± 3.8	5.9 ± 5.0	0.9

^*One participant in the control group started PT 6-months after unilateral TKR

Comorbidity present of; cardiovascular disease/chronic obstructive pulmonary disease/stroke/cancer/history of falls/diabetes/depression

Visual Analog Scale (VAS)

Knee flexion and extension passive range of motion on unilateral TKR side

^{^}- lacking knee extension