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Table 2 Clinical characteristics of 232 patients in RT and non-RT groups after propensity score matching

From: Timing of thoracic radiotherapy in the treatment of extensive-stage small-cell lung cancer: important or not?

  Before matching After matching
RTa non-RTb P RTc non-RTd P
Gender Male 146 36 0.843 32 36 0.462
Female 41 9   13 9
Age, y ≥65 50 14 0.580 10 14 0.475
<65 137 31   35 31
KPS ≥80 174 41 0.749 42 41 1.000
<80 13 4   3 4
Smoking index ≥400 146 35 1.000 34 35 1.000
<400 41 10   11 10
Family history of neoplasm Yes 39 8 0.836 14 8 0.220
No 148 37   31 37
Weight loss Yes 25 2 0.121 4 2 0.677
No 162 43   41 43
PCI Yes 25 1 0.034 2 1 1.000
No 162 44   43 44
Number of metastases ≥2 Yes 21 11 0.029 8 11 0.606
No 166 34   37 34
  1. a n = 187; b n = 45; c n = 45; d n = 45