Evidence map›Paper›PMID 34837972›Full record

ArticleBMC public health2021

Declines in health literacy and health-related quality of life during the COVID-19 pandemic: a longitudinal study of the Japanese general population.

Hirono Ishikawa, Mio Kato, Takahiro Kiuchi

Abstract read
In one paragraph

Article in BMC public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Changes in health-related quality of life and inequality in China: evidence from a nationwide repeated cross-sectional survey (2021-2023).Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. The relationship between healthcare access and change in health-related quality-of-life among the general population of five countries during the COVID-19 pandemic.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2024
    Article
  11. Evidence of quality of life for hospitalised patients with COVID-19: a scoping review.Health technology assessment (Winchester, England) · 2024
    Article
  12. Article
  13. Article
  14. Observational
  15. Article
  16. Article
  17. The impact of health literacy on COVID-19 immunization.Human vaccines & immunotherapeutics · 2023
    Article
  18. Article
  19. Health-related quality of life in seven European countries throughout the course of the COVID-19 pandemic: evidence from the European COvid Survey (ECOS).Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2023
    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

3 authors.

Hirono IshikawaGraduate School of Public Health, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan. hirono-tky@umin.ac.jp.
Mio KatoGraduate School of Public Health, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.
Takahiro KiuchiDepartment of Health Communication, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDuring the coronavirus disease 2019 (COVID-19) pandemic, the importance of health literacy (HL) was addressed by public health researchers. We longitudinally examined the changes in general HL and health-related quality of life (HRQOL) between immediately before the COVID-19 outbreak and 1 year later, and how general HL before the outbreak was related to changes in HRQOL in the Japanese general population.

methodsAmong the Japanese residents aged 20-79 years who participated in our previous study in 2017, 826 were followed-up via self-administered questionnaires in January 2020 and February 2021, for the purposes of this study. The HRQOL was measured using the SF-8, a short version of the SF-36 Health Survey, and general HL was measured using the short form of the European Health Literacy Survey Questionnaire (HL-SF12) in the 2020 and 2021 surveys.

resultsThe physical and mental dimensions of HRQOL as well as general HL declined significantly from immediately before the COVID-19 outbreak to 1 year later (p = .010, p < .001 and p < .001, respectively). The decline in HRQOL, especially the mental dimension, was more significant among women. A lower economic status was also related to a greater decline in HRQOL (p = .026 for the physical dimension and p = .012 for the mental dimension). Higher general HL before the COVID-19 outbreak was associated with a lesser decline in HRQOL in both the physical and mental dimensions (p = .040 and p < .001, respectively) after controlling for possible confounding variables such as gender and economic status.

conclusionsHealthcare support is crucial for vulnerable populations during and after the pandemic. General HL may be important for attenuating the decline in HRQOL, by enabling effective use of health information and adaptive behaviors toward health threats. Further studies are needed to better understand the association between HL and HRQOL.

Indexed as

COVID-19Health LiteracyCross-Sectional StudiesFemaleHumansJapanLongitudinal StudiesPandemicsQuality of LifeSARS-CoV-2Surveys and QuestionnairesCOVID-19Health literacyHealth related quality of lifeLongitudinal study

Identifiers

PMID34837972
PMCPMC8627295

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.