Table 2. Changes in pain outcome measures after four, eight, twelve, and twenty-four weeks post-treatment.

	Baseline	Week 4	Week 8	Week 12	Week 24
WUSPIa	97.2 (27.8)	38.4 (21.0)	31.1 (29.4)	29.8 (32.4)	29.6 (30.1)
NRSb	6.0 (1.9)	2.86 (2.0)	2.83 (1.5)	2.5 (2.6)	3.0 (1.7)
PESS-STc	9.0 (1.3)	2.4 (1.0)	4.0 (3.2)	3.0 (2.7)	5.17 (2.9)
USPRS-STe	3.2 (1.7)	NA	NA	3.3 (1.5)	3.2 (1.3)

Notes. WUSPI = Wheelchair User's Shoulder Pain Index. NRS = Numerical Rating Scale. PESS-ST = Physical Examination of the Shoulder Scale supraspinatus tendon subscale. USPRS-ST = Ultrasound Shoulder Pathology Rating Scale supraspinatus tendon subscale.

^aP < 0.001; significantly different from baseline at all points (P < 0.001).

^bP < 0.01; significantly different from baseline at all points (P < 0.01).

^cP < 0.01; significantly different from baseline at all points (P < 0.05).

^eP > 0.05.