Comment on: 'Hospital lung surgery volume and patient outcomes'.

Caroline Bennette, Andrew Vickers, Against quantiles: categorization of continuous variables in epidemiologic research, and its discontents BMC Medical Research Methodology. ,vol. 12, pp. 21- 21 ,(2012) , 10.1186/1471-2288-12-21

Terumoto Koike, Teruaki Koike, Katsuo Yoshiya, Masanori Tsuchida, Shin-ichi Toyabe, Risk factor analysis of locoregional recurrence after sublobar resection in patients with clinical stage IA non–small cell lung cancer The Journal of Thoracic and Cardiovascular Surgery. ,vol. 146, pp. 372- 378 ,(2013) , 10.1016/J.JTCVS.2013.02.057

Cardinale B. Smith, Scott J. Swanson, Grace Mhango, Juan P. Wisnivesky, Survival After Segmentectomy and Wedge Resection in Stage I Non–Small-Cell Lung Cancer Journal of Thoracic Oncology. ,vol. 8, pp. 73- 78 ,(2013) , 10.1097/JTO.0B013E31827451C4

Pierre-Emmanuel Falcoz, Marc Puyraveau, Caroline Rivera, Alain Bernard, Gilbert Massard, Frederic Mauny, Marcel Dahan, Pascal-Alexandre Thomas, Epithor Group, The impact of hospital and surgeon volume on the 30-day mortality of lung cancer surgery: A nation-based reappraisal The Journal of Thoracic and Cardiovascular Surgery. ,vol. 148, pp. 841- 848 ,(2014) , 10.1016/J.JTCVS.2014.01.030

Erik Jakobsen, Anders Green, Kell Oesterlind, Torben Riis Rasmussen, Maria Iachina, Torben Palshof, Nationwide quality improvement in lung cancer care: the role of the Danish Lung Cancer Group and Registry. Journal of Thoracic Oncology. ,vol. 8, pp. 1238- 1247 ,(2013) , 10.1097/JTO.0B013E3182A4070F

Margreet Lüchtenborg, Sharma P. Riaz, Victoria H. Coupland, Eric Lim, Erik Jakobsen, Mark Krasnik, Richard Page, Michael J. Lind, Michael D. Peake, Henrik Møller, High Procedure Volume Is Strongly Associated With Improved Survival After Lung Cancer Surgery Journal of Clinical Oncology. ,vol. 31, pp. 3141- 3146 ,(2013) , 10.1200/JCO.2013.49.0219

Wilson W.L. Li, Otto Visser, Dirk T. Ubbink, Houke M. Klomp, Jaap J. Kloek, Bas A.J.M. de Mol, The influence of provider characteristics on resection rates and survival in patients with localized non-small cell lung cancer Lung Cancer. ,vol. 60, pp. 441- 451 ,(2008) , 10.1016/J.LUNGCAN.2007.10.029

Wulf Sienel, Sebastian Dango, Andreas Kirschbaum, Beatrix Cucuruz, Wolfram Hörth, Christian Stremmel, Bernward Passlick, Sublobar resections in stage IA non-small cell lung cancer: segmentectomies result in significantly better cancer-related survival than wedge resections. European Journal of Cardio-Thoracic Surgery. ,vol. 33, pp. 728- 734 ,(2008) , 10.1016/J.EJCTS.2007.12.048

Henrik Møller, Sharma P. Riaz, Lars Holmberg, Erik Jakobsen, Jesper Lagergren, Richard Page, Michael D. Peake, Neil Pearce, Arnie Purushotham, Richard Sullivan, Peter Vedsted, Margreet Luchtenborg, High lung cancer surgical procedure volume is associated with shorter length of stay and lower risks of re-admission and death: National cohort analysis in England European Journal of Cancer. ,vol. 64, pp. 32- 43 ,(2016) , 10.1016/J.EJCA.2016.05.021

Samina Park, In Kyu Park, Eung Re Kim, Yoohwa Hwang, Hyun Joo Lee, Chang Hyun Kang, Young Tae Kim, Current Trends of Lung Cancer Surgery and Demographic and Social Factors Related to Changes in the Trends of Lung Cancer Surgery: An Analysis of the National Database from 2010 to 2014 Cancer Research and Treatment. ,vol. 49, pp. 330- 337 ,(2017) , 10.4143/CRT.2016.196