Evaluation of Difference in Whole Survival-time Patterns between two Groups of Patients with Lung Cancer Treatment
1973 Volume 13 Issue 4 Pages 303-307
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1973 Volume 13 Issue 4 Pages 303-307
Generally speaking, the clincian has traditionally used 5-year rate for comparing two groups of cancer treatment.
However, there were no significant difference between two groups of lung cancer at 5-year rate sometimes due to these poorly results, even though there were significant difference in whole survival-time patterns between two groups.
We had three numerical factors to consider that is to say difference, significance, and power testing significant difference between two groups of cancer treatment in statistics, and done test for significant difference between two groups as following data using the Chi-square test described by Mantel & Haenszel.
1) Comparing Koga's numerical example that survival of 106 patients of lung cancer treated by Tele Cobalt 60 radiation therapy with survival of 145 patients of lung cancer treated by similar therapy reporting by Yamashita.
2) Comparing Kuttig's numerical example that survival of 916 patients of lung cancer treated by Tele Cobalt of 60 radiation therapy with survival of 177 patients of lung cancer treated conventional X-ray therapy reporting by Kohler.
3) Comparison between tumor size and survival time of 188 patients of lung cancer by resection reporting by Ishikawa.
