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Table 1 Characteristics of patients with chemorefractory and chemosensitive small cell lung cancer

From: Molecular analysis of cell-free DNA identifies distinct molecular features in patients with chemosensitive and chemorefractory small cell lung cancer

Characteristic Chemorefractory group Chemosensitive group
Total (cases) 12 16
Age [years; median (range)] 60.5 (47–72) 57 (36–78)
  < 40 [cases (%)] 0 (0) 2 (12.5)
 40–49 [cases (%)] 1 (8.3) 1 (6. 3)
 50–59 [cases (%)] 4 (33.3) 9 (56.3)
 60–69 [cases (%)] 5 (41.7) 2 (12.5)
  ≥ 70 [cases (%)] 2 (16.7) 2 (12.5)
Gender [cases (%)]
 Male 11 (91.7) 9 (56.3)
 Female 1 (8.3) 7 (43.8)
Disease stage [cases (%)]
 Limited stage 3 (25.0) 12 (75.0)
 Extensive stage 9 (75.0) 4 (25.0)
Cycles of first-line regimen [cases (%)]
 1–2 5 (41.7) 0 (0.0)
 3–4 3 (25.0) 5 (31.3)
 5–6 4 (33.3) 11 (68.8)
Follow-up [months; median (range)] 10 (5–16) 43.5 (26–103)