Evidence map›Paper›PMID 33535211›Full record

SynthesisDigestive diseases (Basel, Switzerland)2021

NASH/Liver Fibrosis Prevalence and Incidence of Nonliver Comorbidities among People with NAFLD and Incidence of NAFLD by Metabolic Comorbidities: Lessons from South Korea.

Jiyoon Park, Eunice Yewon Lee, Jie Li, Mi Jung Jun, Eileen Yoon, Sang Bong Ahn, Chuanli Liu, Hongli Yang, Fajuan Rui, Biyao Zou and 5 more

Open access · greenAbstract readMeta-Analysis
In one paragraph

Synthesis in Digestive diseases (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Article
  4. Review
  5. Article
  6. Liver diseases: epidemiology, causes, trends and predictions.Signal transduction and targeted therapy · 2025
    Review
  7. Article
  8. Clinical and experimental gastroenterology · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Nonalcoholic fatty liver disease and non-liver comorbidities.Clinical and molecular hepatology · 2023
    Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 7 institutions in 3 countries.

Jiyoon ParkDepartment of Internal Medicine, Santa Clara Valley Medical Center, San Jose, California, USA.
Eunice Yewon LeeDivision of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, California, USA.
Jie LiDepartment of Infectious Disease, The Provincial Hospital Affiliate of Shandong University, Jian, China.
Mi Jung JunDivision of Gastroenterology, Department of Internal Medicine, Good Gang-An Hospital, Busan, Republic of Korea.
Eileen YoonDepartment of Internal Medicine, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea.
Sang Bong AhnDepartment of Internal Medicine, Nowon Eulji Medical Center, Eulji University College of Medicine, Seoul, Republic of Korea.
Chuanli LiuDepartment of Infectious Disease, The Provincial Hospital Affiliate of Shandong University, Jian, China.
Hongli YangDepartment of Infectious Disease, The Provincial Hospital Affiliate of Shandong University, Jian, China.
Fajuan RuiDepartment of Infectious Disease, The Provincial Hospital Affiliate of Shandong University, Jian, China.
Biyao ZouDivision of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, California, USA.
Linda HenryDivision of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, California, USA.
Dong Hyun LeeDivision of Gastroenterology, Department of Internal Medicine, Good Gang-An Hospital, Busan, Republic of Korea.
Dae Won JunDepartment of Gastroenterology, Hanyang University, Seoul, Republic of Korea.
Ramsey C CheungDivision of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, California, USA.
Mindie H NguyenDivision of Gastroenterology and Hepatology, Stanford University Medical Center, Palo Alto, California, USA.
Shandong University · CNStanford Medicine · USEulji University · KRHanyang University · KRInje University Sanggye Paik Hospital · KRSanta Clara Valley Medical Center · USVA Palo Alto Health Care System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNAFLD incidence, NASH prevalence, NAFLD fibrosis prevalence, incidence of metabolic comorbidities, and mortality data in the NAFLD population remain limited.

aimsWe used a meta-analytic approach to "stage" NAFLD among the Korean population.

methodsWe searched PubMed, Embase, Cochrane Library, and KoreaMed from inception until June 29, 2019, and calculated pooled estimates via the random-effects model.

resultsWe screened 1,485 studies and analyzed 191 eligible studies: 179 (3,556,579 participants) for NAFLD prevalence and outcome analysis and 32 (1,089,785 participants) for NAFLD incidence analysis. NAFLD prevalence was 31.46% overall and 50-60% in those with metabolic risks. The incidence (per 1,000 person-years) of NAFLD was 42.8 overall and 70-77% in those with metabolic risk. The incidence (per 1,000 person-years) of new-onset T2DM, hypertension, cardiovascular disease, and chronic kidney disease was found to be 16.9, 47.9, 100.6, and 13.9, respectively. From biopsy data, 30.21% of the NAFLD population had moderate-to-severe steatosis (9 studies, 2,461 participants) and 52.27% had NASH (7 studies, 1,168 participants) and 85.41% had fibrosis <stage 2 (8 studies, 1,995 participants). All-cause mortality was 2.6 (1.3 if without malignancy) per 1,000 person-years.

conclusionsThe overall prevalence of NAFLD was 31.46% with an incidence rate of 42.8 per 1,000 person-years. NASH prevalence was 52% but <15% had significant fibrosis. The prevalence and incidence of nonliver comorbidities was high especially for cardiovascular disease incidence. The burden of NAFLD is high in Korea. Health policy efforts need to be directed towards reversing the course of NAFLD disease.

Indexed as

Non-alcoholic Fatty Liver DiseaseHumansIncidenceLiver CirrhosisPrevalenceRepublic of KoreaDiabetesEpidemiologyFatty liverMetabolic syndromeMortalityObesity

Identifiers

PMID33535211
PMCPMC8686723
OpenAlexW3127245877

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.