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Validation of survival prognostic models for non-small-cell lung cancer in stage- and age-specific groups.

Publication ,  Journal Article
Wang, X; Gu, L; Zhang, Y; Sargent, DJ; Richards, W; Ganti, AK; Crawford, J; Cohen, HJ; Stinchcombe, T; Vokes, E; Pang, H
Published in: Lung Cancer
November 2015

PURPOSE: Prognostic models have been proposed to predict survival for non-small-cell lung cancer (NSCLC). It is important to evaluate whether these models perform better than performance status (PS) alone in stage- and age-specific subgroups. PATIENTS AND METHODS: The validation cohort included 2060 stage I and 1611 stage IV NSCLC patients from 23CALGB studies. For stage I, Blanchon (B), Chansky (C) and Gail (G) models were evaluated along with the PS only model. For stage IV, Blanchon (B) and Mandrekar (M) models were compared with the PS only model. The c-index was used to assess the concordance between survival and risk scores. The c-index difference (c-difference) and the integrated discrimination improvement (IDI) were used to determine the improvement of these models over the PS only model. RESULTS: For stage I, B and PS have better survival separation. The c-index for B, PS, C and G are 0.61, 0.58, 0.57 and 0.52, respectively, and B performs significantly better than PS with c-difference=0.034. For stage IV, B, M and PS have c-index 0.61, 0.64 and 0.60, respectively; B and M perform significantly better than PS with c-difference=0.015 and 0.033, respectively. CONCLUSION: Although some prognostic models have better concordance with survival than the PS only model, the absolute improvement is small. More accurate prognostic models should be developed; the inclusion of tumor genetic variants may improve prognostic models.

Duke Scholars

Published In

Lung Cancer

DOI

EISSN

1872-8332

Publication Date

November 2015

Volume

90

Issue

2

Start / End Page

281 / 287

Location

Ireland

Related Subject Headings

  • Prognosis
  • Oncology & Carcinogenesis
  • Neoplasm Staging
  • Middle Aged
  • Male
  • Lung Neoplasms
  • Humans
  • Female
  • Carcinoma, Non-Small-Cell Lung
  • Aged
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Wang, X., Gu, L., Zhang, Y., Sargent, D. J., Richards, W., Ganti, A. K., … Pang, H. (2015). Validation of survival prognostic models for non-small-cell lung cancer in stage- and age-specific groups. Lung Cancer, 90(2), 281–287. https://doi.org/10.1016/j.lungcan.2015.08.007
Wang, Xiaofei, Lin Gu, Ying Zhang, Daniel J. Sargent, William Richards, Apar Kishor Ganti, Jeffery Crawford, et al. “Validation of survival prognostic models for non-small-cell lung cancer in stage- and age-specific groups.Lung Cancer 90, no. 2 (November 2015): 281–87. https://doi.org/10.1016/j.lungcan.2015.08.007.
Wang X, Gu L, Zhang Y, Sargent DJ, Richards W, Ganti AK, et al. Validation of survival prognostic models for non-small-cell lung cancer in stage- and age-specific groups. Lung Cancer. 2015 Nov;90(2):281–7.
Wang, Xiaofei, et al. “Validation of survival prognostic models for non-small-cell lung cancer in stage- and age-specific groups.Lung Cancer, vol. 90, no. 2, Nov. 2015, pp. 281–87. Pubmed, doi:10.1016/j.lungcan.2015.08.007.
Wang X, Gu L, Zhang Y, Sargent DJ, Richards W, Ganti AK, Crawford J, Cohen HJ, Stinchcombe T, Vokes E, Pang H. Validation of survival prognostic models for non-small-cell lung cancer in stage- and age-specific groups. Lung Cancer. 2015 Nov;90(2):281–287.
Journal cover image

Published In

Lung Cancer

DOI

EISSN

1872-8332

Publication Date

November 2015

Volume

90

Issue

2

Start / End Page

281 / 287

Location

Ireland

Related Subject Headings

  • Prognosis
  • Oncology & Carcinogenesis
  • Neoplasm Staging
  • Middle Aged
  • Male
  • Lung Neoplasms
  • Humans
  • Female
  • Carcinoma, Non-Small-Cell Lung
  • Aged