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.