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Cox proportional hazards regression model showing the effect of independent variables on PFS in multiple analysis
| Independent variable | Coefficient (β) | SE | P value |
|---|---|---|---|
| WHO grade | 0.7 | 0.4 | .13 |
| WHO stage | −0.6 | 0.5 | .14 |
| Substage | 0.7 | 0.5 | .13 |
| B symptoms | −3.5 | 0.6 | .001 |
Note: P values in bold show a statistically significant association.
Abbreviations: PFS, progression free survival; WHO, World Health Organization.
