Independent associations of tricuspid regurgitation velocity in multiple linear regression analysis models adjusted for age, sex, site, and chronic transfusion program.
| . | Beta (95% CI) . | Standardized beta . | P . |
|---|---|---|---|
| Analysis based on all participants with erythropoietin available* | |||
| Erythropoietin, IU/L, natural log | 0.06 (0.02-0.11) | 0.19 | .003 |
| Hemolytic component | 0.05 (0.03-0.07) | 0.27 | < .001 |
| Analysis based on participants with value for hemoglobin F available† | |||
| Hemoglobin F (%) | 0.006 (0.001-0.01) | 0.19 | .023 |
| Hemolytic component | 0.06 (0.03-0.08) | 0.35 | < .001 |
| . | Beta (95% CI) . | Standardized beta . | P . |
|---|---|---|---|
| Analysis based on all participants with erythropoietin available* | |||
| Erythropoietin, IU/L, natural log | 0.06 (0.02-0.11) | 0.19 | .003 |
| Hemolytic component | 0.05 (0.03-0.07) | 0.27 | < .001 |
| Analysis based on participants with value for hemoglobin F available† | |||
| Hemoglobin F (%) | 0.006 (0.001-0.01) | 0.19 | .023 |
| Hemolytic component | 0.06 (0.03-0.08) | 0.35 | < .001 |
n = 294; R-square = 0.19; variables entered into the analysis initially include erythropoietin, hemoglobin oxygen saturation, hemolytic component, and hydroxyurea therapy.
n = 142; R-square = 0.21; variables entered into the analysis initially include hemoglobin F percentage, hemoglobin oxygen saturation, hemolytic component, and hydroxyurea therapy. With hemoglobin F category in the model, P value for hemoglobin F = .002.