Table 2.

PROMIS values.

Early vs. late follow-up		Mean	SD	US population	SD	P value
Physical function T-score	Early	42	11	50	10	<0.001
	Late	44	10			<0.001
Anxiety T-score	Early	50	9	50	10	0.567
	Late	49	10			0.309
Depression T-score	Early	46	9	50	10	0.001
	Late	45	9			<0.001
Fatigue T-score	Early	48	11	50	10	0.062
	Late	48	12			0.182
Sleep disturbance T-score	Early	48	9	50	10	0.082
	Late	48	11			0.169
Ability to participate T-score	Early	48	12	50	10	0.208
	Late	51	11			0.245
Pain interference T-score	Early	53	11	50	10	0.085
	Late	53	11			0.059