Evidence map›Paper›PMID 28448166›Full record

ArticleTraffic injury prevention2018

Changes in motorcycle-related injuries and deaths after mandatory motorcycle helmet law in a district of Vietnam.

Ninh Thi Ha, David Ederer, Van Anh Ha Vo, An Van Pham, Anthony Mounts, Leisha D Nolen, David Sugerman

Open access · greenAbstract read
In one paragraph

Article in Traffic injury prevention, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
3.2field-weighted citation impact, top 10% 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

9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Assessing progress of road safety legislation globally: criteria, methodology and evolution 2015-2023.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Vietnam a country in transition: health challenges.BMJ nutrition, prevention & health · 2020
    Review
  9. 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

7 authors at 1 institution in 1 country.

Ninh Thi Haa Institute of Public Health , Ho Chi Minh City , Vietnam.
David Edererb U.S. Centers of Disease Control , Atlanta , Georgia.
Van Anh Ha Voa Institute of Public Health , Ho Chi Minh City , Vietnam.
An Van Phamc Cu Chi Regional General Hospital , Ho Chi Minh City , Vietnam.
Anthony Mountsd U.S. Centers for Disease Control , Hanoi , Vietnam.
Leisha D Nolene Arctic Investigations Program , NCPDCID, Centers for Disease Control and Prevention , Anchorage , Alaska.
David Sugermanb U.S. Centers of Disease Control , Atlanta , Georgia.
Centers for Disease Control and Prevention · US

Funding

Intramural CDC HHS CC999999
6 · The paper itself

Abstract

objectiveOur study measured the change in head injuries and deaths among motorcycle users in Cu Chi district, a suburban district of Ho Chi Minh City.

methodsHospital records for road traffic injuries (RTIs) were collected from the Cu Chi Trauma Centre and motorcycle-related death records were obtained from mortality registries in commune health offices. Head injury severity was categorized using the Abbreviated Injury Score (AIS). Rate ratios (RRs) were used to compare rates pre- and post-law (2005/2006-2009/2010). Cu Chi's population, stratified by year, age, and sex, was used as the denominator.

resultsOf records identifying the transportation mode at the time of injury, motorcyclists accounted for most injuries (3,035, 87%) and deaths (238, 90%). Head injuries accounted for 70% of motorcycle-related hospitalizations. Helmet use was not recorded in any death records and not in 97% of medical records. Males accounted for most injuries (73%) and deaths (88%). The median age was 28 years and 32 years for injuries and deaths, respectively. Compared to the pre-law period, rates of motorcycle injuries (RR = 0.53; 95% confidence interval [CI], 0.49-0.58), head injuries (RR = 0.35; 95% CI, 0.31-0.39), severe head injuries (RR = 0.47; 95% CI, 0.34-0.63), and deaths (RR = 0.69; 95% CI, 0.53-0.89) significantly decreased in the post-law period.

conclusionsRates of head injuries and deaths among motorcycle riders decreased significantly after implementation of the mandatory helmet law in Vietnam. To further examine the impact of the motorcycle helmet law, including compliance and helmet quality, further emphasis should be placed on gathering helmet use data from injured motorcyclists.

Indexed as

Accidents, TrafficAdolescentAdultChildChild, PreschoolCraniocerebral TraumaFemaleHead Protective DevicesHumansInfantInfant, NewbornMaleMiddle AgedMotorcyclesVietnamYoung AdultHelmetsmortalitymotorcycleroad traffic injuriesVietnam

Identifiers

PMID28448166
PMCPMC5659950
OpenAlexW2609326512

What OpenQuestion holds

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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.