. Author manuscript; available in PMC: 2023 Nov 1.

Published in final edited form as: Clin J Sport Med. 2022 Mar 17;32(6):558–566. doi: 10.1097/JSM.0000000000001029

Table 4.

Comparison of Baseline Characteristics Between Participants With and Without Need for Surgery

Variables	No Surgery (n=53)	Surgery (N=16)	P-value
Age, years; mean (SD)	68.8 (12.0)	68.2 (11.3)	0.86
Female sex; n (%)	25 (48)	11 (69)	0.15
BMI, kg/m²; mean (SD)	27.2 (4.8)	28.6 (6.6)	0.38
Right-sided OA; n (%)	30 (58)	8 (50)	0.59
Duration of symptoms, months; mean (SD)	45 (75)	30 (14)	0.19
Use of pain medication; n (%)	33 (65)	12 (75)	0.10
Severe OA; n (%)	32 (62)	10 (63)	0.94
Platelet yield, fold increase; mean (SD)	3.4 (1.8)	3.5 (0.8)	0.91
SPADI score; mean (SD)	62.1 (16.0)	73.7 (14.1)	0.011

Abbreviations: BMI – body mass index; HA – hyaluronic acid; LP-PRP – leukocyte-poor platelet-rich plasma; OA – osteoarthritis; SD – standard deviation; SPADI – Shoulder Pain and Disability Index