Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups

Abstract Background Fatty liver is frequently found in a general population, and it is critical to detect advanced fibrosis. FIB-4 index is considered a useful marker for evaluating liver fibrosis but the distribution of FIB-4 index in the general population remains unknown. Methods This cross-secti...

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Main Authors: Aya Sugiyama, Akemi Kurisu, Bunthen E, Serge Ouoba, Ko Ko, Anvarjon Rakhimov, Tomoyuki Akita, Takayuki Harakawa, Toru Sako, Makoto Koshiyama, Takashi Kumada, Junko Tanaka
Format: Article
Language:English
Published: BMC 2022-05-01
Series:BMC Gastroenterology
Subjects:
Online Access:https://doi.org/10.1186/s12876-022-02290-1
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author Aya Sugiyama
Akemi Kurisu
Bunthen E
Serge Ouoba
Ko Ko
Anvarjon Rakhimov
Tomoyuki Akita
Takayuki Harakawa
Toru Sako
Makoto Koshiyama
Takashi Kumada
Junko Tanaka
author_facet Aya Sugiyama
Akemi Kurisu
Bunthen E
Serge Ouoba
Ko Ko
Anvarjon Rakhimov
Tomoyuki Akita
Takayuki Harakawa
Toru Sako
Makoto Koshiyama
Takashi Kumada
Junko Tanaka
author_sort Aya Sugiyama
collection DOAJ
description Abstract Background Fatty liver is frequently found in a general population, and it is critical to detect advanced fibrosis. FIB-4 index is considered a useful marker for evaluating liver fibrosis but the distribution of FIB-4 index in the general population remains unknown. Methods This cross-sectional study included residents who underwent ultrasonography at health checkups in Hiroshima or Iwate prefectures. The distribution of FIB-4 index in the total study population (N = 75,666) as well as in non-alcoholic fatty liver disease (NAFLD) populations (N = 17,968) and non-drinkers without fatty liver populations (N = 47,222) was evaluated. The distribution of aspartate aminotransferase (AST) levels, alanine aminotransferase (ALT) levels was also evaluated. Results The mean FIB-4 index in the total study population was 1.20 ± 0.63. FIB-4 index ≥ 2.67, which indicates a high risk of liver fibrosis, was found in 16.4% of those aged ≥ 70 years. In the NAFLD population, 58.1% of those in their 60 s and 88.1% of those ≥ 70 years met the criteria for referral to hepatologists by using the recommended FIB-4 index cutoff value (≥ 1.3). The mean FIB-4 index in the NAFLD population (1.12 ± 0.58) was significantly lower than in the non-drinkers without fatty liver (1.23 ± 0.63, p < 0.0001). The non-drinkers without fatty liver tended to have higher AST relative to ALT levels (60.0% with AST/ALT > 1.0), whereas the results in the NAFLD population were opposite (14.8% with AST/ALT > 1.0). AST > ALT resulted in a higher FIB-4 index in non-drinkers without fatty liver due to the nature of FIB-4 index formula. Conclusions The cutoff value of FIB-4 index (≥ 1.3) for triaging the elderly people with fatty liver for referral to hepatologists should be reconsidered to avoid over-referral. Due to the impact of age and characteristics of AST/ALT ratios, there is no prospect of using FIB-4 index for primary screening for liver fibrosis in a general population of unknown presence or absence of liver disease, even though it can be easily calculated using routine clinical indices. It is desired to develop a non-invasive method for picking up cases with advanced fibrosis latent in the general population.
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spelling doaj.art-1fc12c1872ae4b6796e8f4ff9a3764f62022-12-22T00:38:22ZengBMCBMC Gastroenterology1471-230X2022-05-0122111010.1186/s12876-022-02290-1Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkupsAya Sugiyama0Akemi Kurisu1Bunthen E2Serge Ouoba3Ko Ko4Anvarjon Rakhimov5Tomoyuki Akita6Takayuki Harakawa7Toru Sako8Makoto Koshiyama9Takashi Kumada10Junko Tanaka11Department of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityGeneral Affairs, Foundation for Community Health and Medicine Promotion in Hiroshima PrefectureGeneral Affairs, Foundation for Community Health and Medicine Promotion in Hiroshima PrefectureIwate Prefectural Preventive Medicine AssociationDepartment of Nursing, Faculty of Nursing, Gifu Kyoritsu UniversityDepartment of Epidemiology, Infectious Disease Control and Prevention, Graduate School of Biomedical and Health Sciences, Hiroshima UniversityAbstract Background Fatty liver is frequently found in a general population, and it is critical to detect advanced fibrosis. FIB-4 index is considered a useful marker for evaluating liver fibrosis but the distribution of FIB-4 index in the general population remains unknown. Methods This cross-sectional study included residents who underwent ultrasonography at health checkups in Hiroshima or Iwate prefectures. The distribution of FIB-4 index in the total study population (N = 75,666) as well as in non-alcoholic fatty liver disease (NAFLD) populations (N = 17,968) and non-drinkers without fatty liver populations (N = 47,222) was evaluated. The distribution of aspartate aminotransferase (AST) levels, alanine aminotransferase (ALT) levels was also evaluated. Results The mean FIB-4 index in the total study population was 1.20 ± 0.63. FIB-4 index ≥ 2.67, which indicates a high risk of liver fibrosis, was found in 16.4% of those aged ≥ 70 years. In the NAFLD population, 58.1% of those in their 60 s and 88.1% of those ≥ 70 years met the criteria for referral to hepatologists by using the recommended FIB-4 index cutoff value (≥ 1.3). The mean FIB-4 index in the NAFLD population (1.12 ± 0.58) was significantly lower than in the non-drinkers without fatty liver (1.23 ± 0.63, p < 0.0001). The non-drinkers without fatty liver tended to have higher AST relative to ALT levels (60.0% with AST/ALT > 1.0), whereas the results in the NAFLD population were opposite (14.8% with AST/ALT > 1.0). AST > ALT resulted in a higher FIB-4 index in non-drinkers without fatty liver due to the nature of FIB-4 index formula. Conclusions The cutoff value of FIB-4 index (≥ 1.3) for triaging the elderly people with fatty liver for referral to hepatologists should be reconsidered to avoid over-referral. Due to the impact of age and characteristics of AST/ALT ratios, there is no prospect of using FIB-4 index for primary screening for liver fibrosis in a general population of unknown presence or absence of liver disease, even though it can be easily calculated using routine clinical indices. It is desired to develop a non-invasive method for picking up cases with advanced fibrosis latent in the general population.https://doi.org/10.1186/s12876-022-02290-1Fatty liverNon-alcoholic fatty liver diseaseLiver fibrosisIndirect biomarkerScoring systemUltrasonography
spellingShingle Aya Sugiyama
Akemi Kurisu
Bunthen E
Serge Ouoba
Ko Ko
Anvarjon Rakhimov
Tomoyuki Akita
Takayuki Harakawa
Toru Sako
Makoto Koshiyama
Takashi Kumada
Junko Tanaka
Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups
BMC Gastroenterology
Fatty liver
Non-alcoholic fatty liver disease
Liver fibrosis
Indirect biomarker
Scoring system
Ultrasonography
title Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups
title_full Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups
title_fullStr Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups
title_full_unstemmed Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups
title_short Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups
title_sort distribution of fib 4 index in the general population analysis of 75 666 residents who underwent health checkups
topic Fatty liver
Non-alcoholic fatty liver disease
Liver fibrosis
Indirect biomarker
Scoring system
Ultrasonography
url https://doi.org/10.1186/s12876-022-02290-1
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