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Surgeon Volume and Surgeon Age in Relation to Proficiency Gain Curves for Prognosis Following Surgery for Esophageal Cancer.
Annals of Surgical Oncology 2018 October 16
BACKGROUND: Surgery proficiency gain curves must be shortened to reduce patient harm during esophagectomy learning.
OBJECTIVE: This study aimed to test whether surgeon volume and surgeon age influenced the length of period of surgical proficiency gain.
METHODS: This population-based cohort study included 1384 patients with esophageal cancer who underwent esophagectomy by any of the 36 highest-volume surgeons in Sweden between 1987 and 2010, with follow-up until 2016. Annual surgeon volume was dichotomized by the median values into 'higher-volume surgeons' (≥ 4 cases per year) and 'lower-volume surgeons' (< 4 cases per year), and surgeon age at the start of practicing esophagectomies into 'younger surgeons' (aged < 45 years) and 'older surgeons' (aged ≥ 45 years). Proficiency gain curves were constructed using risk-adjusted cumulative sum analysis for 1- to 5-year mortality (main outcome) and secondary outcomes (presented below). The results were adjusted for all established prognostic factors.
RESULTS: For 1- to 5-year mortality, the change point was at 14 cases among 'higher-volume surgeons', while 'lower-volume surgeons' had a later change point at 31 cases. The corresponding change points were at 13 cases among 'younger surgeons' and at 48 cases among 'older surgeons'. Similar patterns of differences in the proficiency gain curves were seen for the secondary outcomes of 30-day mortality and resection margin status (tumor involvement).
CONCLUSION: Higher-volume- and younger surgeons seem to have a substantially shorter period of proficiency gain for long-term mortality and other outcomes following surgery for esophageal cancer. This indicates a value of intensified training of younger surgeons for these complex operations.
OBJECTIVE: This study aimed to test whether surgeon volume and surgeon age influenced the length of period of surgical proficiency gain.
METHODS: This population-based cohort study included 1384 patients with esophageal cancer who underwent esophagectomy by any of the 36 highest-volume surgeons in Sweden between 1987 and 2010, with follow-up until 2016. Annual surgeon volume was dichotomized by the median values into 'higher-volume surgeons' (≥ 4 cases per year) and 'lower-volume surgeons' (< 4 cases per year), and surgeon age at the start of practicing esophagectomies into 'younger surgeons' (aged < 45 years) and 'older surgeons' (aged ≥ 45 years). Proficiency gain curves were constructed using risk-adjusted cumulative sum analysis for 1- to 5-year mortality (main outcome) and secondary outcomes (presented below). The results were adjusted for all established prognostic factors.
RESULTS: For 1- to 5-year mortality, the change point was at 14 cases among 'higher-volume surgeons', while 'lower-volume surgeons' had a later change point at 31 cases. The corresponding change points were at 13 cases among 'younger surgeons' and at 48 cases among 'older surgeons'. Similar patterns of differences in the proficiency gain curves were seen for the secondary outcomes of 30-day mortality and resection margin status (tumor involvement).
CONCLUSION: Higher-volume- and younger surgeons seem to have a substantially shorter period of proficiency gain for long-term mortality and other outcomes following surgery for esophageal cancer. This indicates a value of intensified training of younger surgeons for these complex operations.
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