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Table 1 Clinicopathological characteristics of patients for discovery and clinical validation cohorts

From: Genome-wide DNA methylation profiling reveals novel epigenetic signatures in squamous cell lung cancer

Clinical and pathological variables Discovery cohort (N = 24) Validation cohort (N = 56)
Age (years)
  < 60 13 29
  ≥ 60 11 27
Gender
 Male 22 54
 Female 2 2
Smoking status
 Smoker 19 48
 Non-smoker 5 8
Clinical stage
 I-II 14 28
 III-IV 10 28
Differentiation
 Well 0 8
 Moderate 16 27
 Poor 8 21
Lymph node metastasis
 Yes 11 21
 No 13 35