Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Utvärdering av den svenska cykelhjälmslagen för barn under 15 år: Analys av nationella trender i cykelrelaterade huvudskador mellan 1998-2011
2013 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesisAlternative title
Evaluation of the Swedish bicycle helmet law for children under the age of 15 : Analysis of national trends in bicycle-related head injuries between 1998-2011 (English)
Abstract [en]

Introduction: In January 2005, a nationwide mandatory bicycle helmet law for children under the age of 15 was introduced in Sweden. In the current study, the effect of this law was evaluated by analyzing national trends in hospital admissions due to bicycle-related head injuries during the period 1998-2011.

Methods: An interrupted time-series design with segmented regression analysis was used to evaluate the intervention effect on head injuries as a percentage of all injuries (%HI) among cyclists in age- and sex-specific groups. Effect was measured as a change in level and/or slope of the trend at the time of legislation.

Results: A total of 35261 cyclists (0-54 years) were hospitalized due to a bicycle injury during the study period. Linear regression analyses of the entire study period (not segmented) showed significant year-to-year decreases in the %HI of 1.3-1.7% in all age and sex-specific groups (p < .0001). Results from the segmented regression analysis showed that, at the time of legislation, a significant drop in level occurred among males under 15 years (-4.5% [95% CI: -7.7% to -1.3%], p = .01) and a significant change in slope occurred among females aged 30-54 years (-1.6% [95% CI: -2.9% to -0.2%], p = .025).

Conclusions: The law seems to have had an effect on males in the target population (<15 years). Although no significant changes were observed among females in this group as an immediate result of the law, the difference in %HI between genders was minimal at the end of the study period due to the steeper general decline among females.

Abstract [sv]

Inledning: I Sverige infördes en cykelhjälmslag för barn under 15 år den första januari 2005. Syftet med denna studie var att studera effekten av denna lag genom att analysera nationella trender i andelen huvudskador bland svenska cyklister under tidsperioden 1998-2011.

Metod: Segmenterad regressionsanalys applicerades på tidsseriedata (interrupted time-series design) för att utvärdera om ett trendbrott när det gäller andelen cykelrelaterade huvudskador sammanföll med lagens införande i olika köns- och åldersspecifika grupper. Effekt mättes som en skillnad i regressionslinjens riktning och nivå.

Resultat: Inom åldersgruppen 0-54 år vårdades totalt 35261 cyklister under studieperioden. Linjära regressionsanalyser (ej segmenterade) visade att mellan 1998-2011 minskade andelen huvudskador årligen minskade med 1,3–1,7 % i samtliga studerade köns- och åldersspecifika grupper. Den segmenterade regressionsanalysen visade att samtidigt som cykelhjälmslagen infördes skedde en signifikant skillnad i regressionslinjens nivå bland pojkar under 15 år (-4,5 % [95 % CI: -7,7 % till -1,3 %], p = 0,01) och en signifikant skillnad i regressionslinjens riktning bland kvinnor i åldersgruppen 30-54 år (-1,6 % [95 % CI: -2,9 % till -0,2 %], p = 0,025).

Slutsats: Den svenska cykelhjälmslagen verkar ha haft en betydande inverkan på trenden i cykelrelaterade huvudskador bland pojkar under 15 år. Även om något liknande fenomen inte framstod bland flickor i interventionsgruppen bör det noteras att skillnaden i andelen huvudskador mellan könen i slutet av studieperioden var minimal.

Place, publisher, year, edition, pages
2013. , 32 p.
Keyword [en]
bicycle, cyclist, bicyclist, head injury, bicycle helmet legislation, injury trends, population-based study, epidemiology, injury prevention, intervention, evaluation, risk
Keyword [sv]
cykel, cyklist, huvudskada, cykelhjälmslagstiftning, skadetrender, populationsbaserad studie, epidemiologi, skadeprevention, intervention, utvärdering, risk
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:kau:diva-29371OAI: oai:DiVA.org:kau-29371DiVA: diva2:655436
Subject / course
Risk management
Educational program
Societal Risk Management (120 ECTS credits)
Supervisors
Examiners
Available from: 2013-10-15 Created: 2013-10-11 Last updated: 2013-10-15Bibliographically approved

Open Access in DiVA

fulltext(788 kB)503 downloads
File information
File name FULLTEXT01.pdfFile size 788 kBChecksum SHA-512
218d8fa7e911f5759e43ffcd7ecc5a887fa5ad8d1fd1951f9cbfead54581e7e7bb2d827bea2300c8a63b0141ce869b0326930e69adb813f3d9588311cc671773
Type fulltextMimetype application/pdf

Public Health, Global Health, Social Medicine and Epidemiology

Search outside of DiVA

GoogleGoogle Scholar
Total: 503 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 291 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf