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. 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 3.

Effect of Platelet Yield on Patient-Reported Outcomes.

Timepoint Slope (SE) 95% CI P-value
SPADI
Baseline REF
1 Month −1.4 (2.1) −5.6, 2.7 0.50
2 Months 0.0 (2.1) −4.1, 4.2 0.99
3 Months 0.6 (2.1) −3.5, 4.8 0.77
6 Months −2.1 (2.1) −6.3, 2.1 0.33
12 Months 3.7 (2.4) −1.0, 8.4 0.12
ASES score
Baseline REF
1 Month 3.1 (2.2) −1.2, 7.4 0.16
2 Months 0.0 (2.2) −4.4, 4.2 0.96
3 Months 2.4 (2.2) −1.9, 6.7 0.28
6 Months 2.7 (2.2) −1.7, 7.0 0.23
12 Months −2.2 (2.3) −6.7, 2.4 0.35
Current NRS Pain
Baseline REF
1 Month 0.0 (0.3) −0.6, 0.7 0.95
2 Months 0.5 (0.3) −0.1, 1.2 0.11
3 Months 0.0 (0.3) −0.6, 0.7 0.92
6 Months 0.2 (0.3) −0.5, 0.8 0.61
12 Months 0.6 (0.3) −0.1, 1.3 0.07
Average NRS Pain
Baseline REF
1 Month −0.1 (0.3) −0.7, 0.5 0.75
2 Months 0.2 (0.3) −0.4, 0.8 0.57
3 Months −0.2 (0.3) −0.7, 0.4 0.59
6 Months −0.1 (0.3) −0.7, 0.5 0.65
12 Months 0.3 (0.3) −0.3, 0.9 0.34

Abbreviations: ASES – American Shoulder and Elbow Surgeons; CI – confidence interval; NRS – numerical rating scale; REF – reference; SPADI – Shoulder Pain and Disability Index.