| Overall | Survival | Death | Odds ratio | 95% CI | p |
---|---|---|---|---|---|---|
Overall | 36 | 22 | 14 | Â | Â | Â |
Age |  |  |  | 2.45 | 0.64–9.37 | 0.310 |
  ≤ 70 | 19 | 12 | 7 |  |  |  |
  ≥ 71 | 17 | 10 | 7 |  |  |  |
Sex |  |  |  | 0.74 | 0.16–3.39 | 0.693 |
 Female | 9 | 5 | 4 |  |  |  |
 Male | 27 | 17 | 10 |  |  |  |
Performance status |  |  |  | 1.22 | 0.44–3.43 | 0.693 |
 0–1 | 27 | 16 | 11 |  |  |  |
 2–4 | 9 | 6 | 3 |  |  |  |
Smoking history |  |  |  | 2.48 | 1.26–4.86 | 0.042 |
 No | 5 | 1 | 4 |  |  |  |
 Yes | 31 | 21 | 10 |  |  |  |
With emphysema |  |  |  | 1.50 | 0.67–3.39 | 0.334 |
 No | 13 | 6 | 7 |  |  |  |
 Yes | 23 | 16 | 7 |  |  |  |
With pre-existing interstitial shadow |  |  |  | 1.67 | 0.73–3.81 | 0.221 |
 No | 15 | 8 | 7 |  |  |  |
 Yes | 21 | 14 | 7 |  |  |  |
ΔSP-D |  |  |  | 7.00 | 2.19–72.26 | 0.001 |
  < 398 | 27 | 21 | 6 |  |  |  |
  ≥ 398 | 9 | 1 | 8 |  |  |  |