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Abstract

We agree with Zhou et al that we need to consider the surgical approach in the multivariable logistic regression model, but we did not adjust for it because it was highly correlated with pathologic stage, which we already included in the multivariable adjusted model.1Lee H. Kim H.K. Kang D. et al.Prognostic value of 6-min walk test to predict postoperative cardiopulmonary complications in patients with non-small cell lung cancer.Chest. 2020; 157: 1665-1673Abstract Full Text Full Text PDF PubMed Scopus (18) Google Scholar Also, it was difficult for us to adjust all surgical factors including duration of surgery considering the relatively small number of patients who experienced postoperative cardiopulmonary complications as Zhou et al pointed out. Further study with a larger sample would be necessary to confirm our study findings. The Surgical Approach and Duration of Surgery Should Be Considered in Statistical Models for the Analysis of Postoperative Complications in Patients With Resected Lung CancerCHESTVol. 159Issue 2PreviewWe read with great interest the article by Lee et al1 in CHEST (June 2020), wherein the authors compared the incidence of postoperative cardiopulmonary complications among four groups with the use of a prospective cohort analysis. The authors used postoperative pulmonary function (low-risk or moderate-risk) and a 6-minute walk test (<400 m or ≥400 m) as the criteria for grouping. The authors concluded that, with non-small cell lung cancer, the patients with moderate-risk/short-distance were at greater risk of experiencing postoperative cardiopulmonary complications compared with the low-risk/long-distance patients. Full-Text PDF Prognostic Value of 6-Min Walk Test to Predict Postoperative Cardiopulmonary Complications in Patients With Non-small Cell Lung CancerCHESTVol. 157Issue 6PreviewThe risk stratification value of the 6-min walk test (6MWT) to decide the feasibility of surgical resection is not well elucidated in patients with non-small cell lung cancer (NSCLC) and moderately decreased lung function. Full-Text PDF