Although Cox proportional hazard regression analyses demonstrated that the prognostic effect of SMA on OS was more evident in the LD stage than in the ED stage ( Tables 2 and 3 ), the association between SMA and OS did not reach statistical significance in terms of differences between the two stages ( P for interaction = 0.063).
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Prognostic significance of body mass index in small-cell lung cancer: Exploring the relationship with skeletal muscle status.
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