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Nodal Ratios In Node-Positive Breast Cancer—Long-Term Study To Clarify Discrepancy Of Role Of Supraclavicular And Axillary Regional Radiotherapy, Patricia Tai, Kurian Joseph, Evgeny Sadikov, Shazia Mahmood, Francis Lien, Edward Yu
Nodal Ratios In Node-Positive Breast Cancer—Long-Term Study To Clarify Discrepancy Of Role Of Supraclavicular And Axillary Regional Radiotherapy, Patricia Tai, Kurian Joseph, Evgeny Sadikov, Shazia Mahmood, Francis Lien, Edward Yu
Edward Yu
Purpose: To study the absolute number of involved nodes/the number of nodes examined or the nodal ratio (NR) in breast cancer. The primary study endpoint was to evaluate the role of supraclavicular and axillary radiotherapy (SART) according to the NR. Methods and materials: From the Saskatchewan provincial registry of 1981-1995, the charts of 5,996 consecutive patients were retrieved to collect detailed prognostic factors. Among these patients, 1,985 were node positive. Because the NRs are more reliable the greater the number of nodes examined, we analyzed 1,255 patients with > or =10 nodes examined. Of these 1,255 patients, 667, 389, and 199 …
Disease-Specific Survival For Limited-Stage Small-Cell Lung Cancer Affected By Statistical Method Of Assessment, Patricia Tai, Judith-Anne Chapman, Edward Yu, Dennie Jones, Changhong Yu, Fei Yuan, Lee Sang-Joon
Disease-Specific Survival For Limited-Stage Small-Cell Lung Cancer Affected By Statistical Method Of Assessment, Patricia Tai, Judith-Anne Chapman, Edward Yu, Dennie Jones, Changhong Yu, Fei Yuan, Lee Sang-Joon
Edward Yu
Background: In general, prognosis and impact of prognostic/predictive factors are assessed with Kaplan-Meier plots and/or the Cox proportional hazard model. There might be substantive differences from the results using these models for the same patients, if different statistical methods were used, for example, Boag log-normal (cure-rate model), or log-normal survival analysis. Methods: Cohort of 244 limited-stage small-cell lung cancer patients, were accrued between 1981 and 1998, and followed to the end of 2005. The endpoint was death with or from lung cancer, for disease-specific survival (DSS). DSS at 1-, 3- and 5-years, with 95% confidence limits, are reported for all …