Evidence map›Paper›PMID 33849861›Full record

ArticleBMJ open2021

Association between participation in the government subsidy programme for domestic travel and symptoms indicative of COVID-19 infection in Japan: cross-sectional study.

Atsushi Miyawaki, Takahiro Tabuchi, Yasutake Tomata, Yusuke Tsugawa

Abstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
–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

36 citing papers in PubMed.

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  5. Medication adherence and functional food use in patients with hypertension: a cross-sectional study.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Atsushi MiyawakiDepartment of Public Health, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Japan amiyawaki-tky@umin.ac.jp.ORCID 0000-0001-6126-1464
Takahiro TabuchiCancer Control Center, Osaka International Cancer Institute, Osaka, Osaka, Japan.ORCID 0000-0002-1050-3125
Yasutake TomataFaculty of Health and Social Services, Kanagawa University of Human Services, Yokosuka, Kanagawa, Japan.
Yusuke TsugawaDivision of General Internal Medicine and Health Services Research, UCLA David Geffen School of Medicine, Los Angeles, California, USA.ORCID 0000-0002-1937-4833

Funding

The Impact of Surgeon Factors and Education/Training on Disparities in Surgical Care.R01MD013913 · NIMHD · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TSUGAWA, YUSUKE · 2020 to 2024
$3.6M
The Impact of physician and health system factors on the quality of care for persons with Alzheimer's disease and related dementias at the end of lifeR01AG068633 · NIA · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI TSUGAWA, YUSUKE · 2020 to 2024
$3.0M
NIA NIH HHS R01 AG068633NIMHD NIH HHS R01 MD013913
6 · The paper itself

Abstract

objectiveTo investigate the association between participation in government subsidies for domestic travel (subsidise up to 50% of all travel expenses) introduced nationally in Japan on 22 July 2020 and the incidence of symptoms indicative of COVID-19 infections.

designCross-sectional analysis of nationally representative survey data.

settingInternet survey conducted between 25 August and 30 September 2020 in Japan. Sampling weights were used to calculate national estimates.

participants25 482 survey respondents (50.3% (12 809) women; mean (SD) age, 48.8 (17.4) years).

main outcome measuresIncidence rate of five symptoms indicative of the COVID-19 infection (high fever, sore throat, cough, headache, and smell and taste disorder) within the past month of the survey, after adjustment for characteristics of individuals and prefecture fixed effects (effectively comparing individuals living in the same prefecture).

resultsAt the time of the survey, 3289 (12.9%) participated in the subsidy programme. After adjusting for potential confounders, we found that participants in the subsidy programme exhibited higher incidence of high fever (adjusted rate, 4.7% for participants vs 3.7% for non-participants; adjusted OR (aOR) 1.83; 95% CI 1.34 to 2.48; p<0.001), sore throat (19.8% vs 11.3%; aOR 2.09; 95% CI 1.37 to 3.19; p=0.002), cough (19.0% vs 11.3%; aOR 1.96; 95% CI 1.26 to 3.01; p=0.008), headache (29.2% vs 25.5%; aOR 1.24; 95% CI 1.08 to 1.44; p=0.006) and smell and taste disorder (2.6% vs 1.8%; aOR 1.98; 95% CI 1.15 to 3.40; p=0.01) compared with non-participants. These findings remained qualitatively unaffected by additional adjustment for the use of 17 preventative measures (eg, social distancing, wearing masks and handwashing) and fear against the COVID-19 infection.

conclusionsThe participation of the government subsidy programme for domestic travel was associated with a higher probability of exhibiting symptoms indicative of the COVID-19 infection.

Indexed as

Financing, GovernmentAdultAgedCOVID-19Cross-Sectional StudiesFemaleHumansJapanMaleMiddle AgedTravelCOVID-19epidemiologyhealth economicshealth policyinternational health servicespublic health

Identifiers

PMID33849861
PMCPMC8050877

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.