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Table 5 Subgroup OS analysis for stage I NSCLC patients in the overweight group and other groups, stratified by smoking status and T stage

From: Effect of body mass index on survival of patients with stage I non-small cell lung cancer

Prognostic factor OS rate (%) Univariate analysis
3-year 5-year P value (log-rank) P value (Breslow)
Non-smoking    0.001 <0.001
 Overweight 98.2 ± 1.0 92.1 ± 2.2   
 Others 89.1 ± 2.7 79.4 ± 3.6
Smoking    0.083 0.024
 Overweight 89.9 ± 2.8 81.2 ± 3.7   
 Others 78.8 ± 3.1 70.7 ± 3.5
T1a stage    0.024 0.004
 Overweight 100.0 ± 0 97.0 ± 2.1   
 Others 85.0 ± 4.9 81.1 ± 5.4
T1b stage    0.051 0.040
 Overweight 94.8 ± 2.9 87.0 ± 4.6   
 Others 82.4 ± 5.3 76.3 ± 6.0
T2a stage    0.020 0.005
 Overweight 92.4 ± 2.1 83.5 ± 3.1   
 Others 83.2 ± 2.6 72.5 ± 3.2
  1. The data of survival rates are expressed as mean ± standard error