. Author manuscript; available in PMC: 2014 Aug 14.

Published in final edited form as: Am J Sports Med. 2014 Jan 28;42(3):544–551. doi: 10.1177/0363546513516592

TABLE 4.

Change Over Time Between Initial and Final Stress US Findings of Pitchers With at Least 2 Yearly US Examinations (n = 131)^a

	Initial US	Final US	P Value	χ² (df)
Thickness at rest, mm	6.05 ± 1.44	6.12 ± 1.60	.62
Joint space width, mm
At rest	3.08 ± 0.74	2.96 ± 0.73	.11
With stress	4.00 ± 1.12	4.37 ± 0.99	.001
Change in joint space (with stress – at rest)	1.17 ± 0.96	1.03 ± 0.72	.06
Hypoechoic foci, n (%)	65 (49.0)	70 (53.4)	.65	8.37 (1)
Calcifications, n (%)	40 (30.5)	35 (26.7)	.24	24.9 (1)

Data are expressed as mean ± standard deviation unless otherwise indicated. US, ultrasound.