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Table 1 Patients’ clinical characteristics

From: Patterns of brain metastasis immediately before prophylactic cranial irradiation (PCI): implications for PCI optimization in limited-stage small cell lung cancer

Characteristic Patient number (n = 110) Proportion (%)
Gender
 Male 95 86.4%
 Female 15 13.6%
Smoking status
 ever-smokers 86 78.2%
 never-smokers 24 21.8%
T stage
 1 21 19.1%
 2 27 24.5%
 3 34 30.9%
 4 28 25.5%
N stage
 0 2 1.8%
 1 13 11.8%
 2 73 66.4%
 3 22 20.0%
Pre-PCI BM
 Positive 24 21.8%
 Negative 86 78.2%
  Range Median
Age at diagnosis (years) 38–79 60
CRT-D (months) 2.2–8.1 4.1
  1. Abbreviation: PCI Prophylactic cranial irradiation, BM Brain metastasis, evaluated bycranial magnetic resonance imaging, CRT-D Chemoradiotherapy duration. T and Nstaging was based on the 8th TNM staging system for lung cancer