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Japanese

A Statistical Analysis of the Healing and Relapsing Speeds of Peptic Ulcer Ken Kimura 1 , Yukio Yoshida 1 , Tetsuo Kasano 1 , Masao Hirose 1 , Tsutomu Suzuki 1 1Department of Gastroenterology, Jichi Medical School pp.1199-1205
Published Date 1986/11/25
DOI https://doi.org/10.11477/mf.1403110117
  • Abstract
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 A trial of statistical analysis of the speed of ulcer healing and relapse is performed. A non-linear regression analysis is conducted between two variables “t” (time of observation) and “y” (non-healing or nonrelapse rate), obtaining an exponential function y=Ae-kt. Practically, the equation is y=100 : 0≦t<Ti, y=100e-k(t-Ti): Ti≦t.

 The theoretical values obtained from the equation are very close to the observed values.

 The regression parameters are defined as follows, k ; reduction rate constant of non-healing or non-relapse rates, Ti : initiation time of healing or relapse, T1/2: half-life of non-healing or non-relapse rate, and T50: time of 50% healing or relapse.

 With this method, benefit or risk factors which regulate the healing or relapsing speed of peptic ulcer can be dynamically evaluated, being expressed by digital parameters.


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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