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Effects of Life Table Models on the Evaluation of Excess Mortality

BACKGROUND: Northern regions of Iran have been encountered to dominate malignancies of gastrointestinal (GI) tract. We aimed to examine the excess mortality due to the GI tract cancer in Mazandaran province. METHODS: Socio-demographic and clinical data of 484 patients with GI cancer collected during...

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Autores principales: Fathollahi, Mahmood Sheikh, Mahmoodi, Mahmood, Mohammad, Kazem, Zeraati, Hojjat
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Master Publishing Group 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3615264/
https://www.ncbi.nlm.nih.gov/pubmed/23675195
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author Fathollahi, Mahmood Sheikh
Mahmoodi, Mahmood
Mohammad, Kazem
Zeraati, Hojjat
author_facet Fathollahi, Mahmood Sheikh
Mahmoodi, Mahmood
Mohammad, Kazem
Zeraati, Hojjat
author_sort Fathollahi, Mahmood Sheikh
collection PubMed
description BACKGROUND: Northern regions of Iran have been encountered to dominate malignancies of gastrointestinal (GI) tract. We aimed to examine the excess mortality due to the GI tract cancer in Mazandaran province. METHODS: Socio-demographic and clinical data of 484 patients with GI cancer collected during the years 1990-1991 were available from Babol Cancer Registry Center in Iran. Patients were followed-up for a maximum period of 15 years by the year 2006. The Coale-Demeny life tables were established for each combination of birth cohort and sex of patients, and were considered as the reference population in estimating excess mortality rates. The relative and additive mortality models for excess mortality estimation were used. RESULTS: The sample of subjects encompassed 66.3% men and 33.7% women, with mean age 58.26 ± 10.90 years. Esophageal cancer appeared to be the most common one, and endoscopy was the general method for cancer detection. Survival rate in 15 years following diagnosis was nearly 6%. Excess mortality estimated by each of the relative and additive models reached the most value in the first two years of observation in both genders and according to each of the Coale-Demeny regional patterns. CONCLUSION: considering individuals in a population come from different cohorts with different mortality patterns, it might be recommended to construct distinct life tables for different birth cohorts when estimating excess hazard. The West model as a general pattern is recommended to represent mortality patterns in countries whose registration systems either do not exist or are so affected by omission and other errors.
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spelling pubmed-36152642013-05-01 Effects of Life Table Models on the Evaluation of Excess Mortality Fathollahi, Mahmood Sheikh Mahmoodi, Mahmood Mohammad, Kazem Zeraati, Hojjat Int J Biomed Sci Article BACKGROUND: Northern regions of Iran have been encountered to dominate malignancies of gastrointestinal (GI) tract. We aimed to examine the excess mortality due to the GI tract cancer in Mazandaran province. METHODS: Socio-demographic and clinical data of 484 patients with GI cancer collected during the years 1990-1991 were available from Babol Cancer Registry Center in Iran. Patients were followed-up for a maximum period of 15 years by the year 2006. The Coale-Demeny life tables were established for each combination of birth cohort and sex of patients, and were considered as the reference population in estimating excess mortality rates. The relative and additive mortality models for excess mortality estimation were used. RESULTS: The sample of subjects encompassed 66.3% men and 33.7% women, with mean age 58.26 ± 10.90 years. Esophageal cancer appeared to be the most common one, and endoscopy was the general method for cancer detection. Survival rate in 15 years following diagnosis was nearly 6%. Excess mortality estimated by each of the relative and additive models reached the most value in the first two years of observation in both genders and according to each of the Coale-Demeny regional patterns. CONCLUSION: considering individuals in a population come from different cohorts with different mortality patterns, it might be recommended to construct distinct life tables for different birth cohorts when estimating excess hazard. The West model as a general pattern is recommended to represent mortality patterns in countries whose registration systems either do not exist or are so affected by omission and other errors. Master Publishing Group 2010-09 /pmc/articles/PMC3615264/ /pubmed/23675195 Text en © Mahmood Sheikh Fathollahi et al. Licensee Master Publishing Group http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Article
Fathollahi, Mahmood Sheikh
Mahmoodi, Mahmood
Mohammad, Kazem
Zeraati, Hojjat
Effects of Life Table Models on the Evaluation of Excess Mortality
title Effects of Life Table Models on the Evaluation of Excess Mortality
title_full Effects of Life Table Models on the Evaluation of Excess Mortality
title_fullStr Effects of Life Table Models on the Evaluation of Excess Mortality
title_full_unstemmed Effects of Life Table Models on the Evaluation of Excess Mortality
title_short Effects of Life Table Models on the Evaluation of Excess Mortality
title_sort effects of life table models on the evaluation of excess mortality
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3615264/
https://www.ncbi.nlm.nih.gov/pubmed/23675195
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