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Table 2 Results of sensitivity analysis

From: Optimal cutoff of pretreatment neutrophil-to-lymphocyte ratio in head and neck cancer patients: a meta-analysis and validation study

NLR values Random effects model Heterogeneity Egger’s regression test for funnel plot asymmetry
Outcomes Method No. of articles Hazard ratio (95% CI) P-value P-value I squared (%) P-value
OS Raw 24 1.96 (1.66–2.31) < 0.0001 0.0053 48.29% 0.0007
  Trim-and-fill 33 1.63 (1.35–1.97) < 0.0001 <  0.0001 65.38% 0.5874
DFS Raw 12 1.90 (1.41–2.54) < 0.0001 0.0002 70.39% 0.0017
  Trim-and-fill 17 1.53 (1.12–2.08) 0.0068 < 0.0001 75.53% 0.2780
  1. OS overall survival, DFS disease free survival, CI confidence interval.