Biomarkers in Spinal Metastasis of Breast Cancer: Insights Into Survival and Functional Outcomes.

Liberal thresholds are recommended in purposeful selection strategies and confounder screening because variables that are not conventionally significant can still introduce bias, and so candidates were prespecified from clinical relevance and retained if the p value was less than 0.2. 24 26 27 28 The time ratios (TRs), standard errors, and p values are reported.

also in 21 other papers