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Naturliga antal förbättrar förmågan att tolka testresultat

von Schreeb, Sebastian; Merlo, Juan LU and Psouni, Elia LU (2018) In Läkartidningen 115. p.1-4
Abstract (Swedish)
Läkares förmåga att tolka screeningresultat har visats vara bristande.
Naturliga antal är ett format att presentera statistik på som kan underlätta den förmågan.Den här studien är först i Sverige att undersöka om naturliga antal förbättrar läkarstudenters förmåga att finna ett testresultats prediktiva värde.
74 procent lyckades med uppgiften när naturliga antal användes, jämfört med 54 procent då gängse format användes (oddskvot 3,2; P = 0,002; 95 procents konfidensintervall 1,52–6,81).Resultaten indikerar att effekten av att använda naturliga antal kvarstår i en svensk kontext.
Abstract

The ability to draw statistical inferences from test results may be generally limited among physicians. A new way of presenting statistics, called natural frequencies, has been shown to improve this ability. The current study is the first to investigate this effect in Sweden, involving senior medical students. An intra-individual cross-over design was used in which participants answered a statistical inference task presented with natural frequencies and another with percentages, which has been the customary format. A total of 74% made a correct inference on the natural frequencies task, as compared to 54% on the percentages task, with an odds ratio of 3.2, p = 0.002, 95% CI 1.52-6.81. The findings indicate that the effect of using... (More)

The ability to draw statistical inferences from test results may be generally limited among physicians. A new way of presenting statistics, called natural frequencies, has been shown to improve this ability. The current study is the first to investigate this effect in Sweden, involving senior medical students. An intra-individual cross-over design was used in which participants answered a statistical inference task presented with natural frequencies and another with percentages, which has been the customary format. A total of 74% made a correct inference on the natural frequencies task, as compared to 54% on the percentages task, with an odds ratio of 3.2, p = 0.002, 95% CI 1.52-6.81. The findings indicate that the effect of using natural frequencies arises also in a Swedish context.

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Please use this url to cite or link to this publication:
author
organization
alternative title
Natural frequencies improved diagnostic inference among medical students i Sweden
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Surveys and Questionnaires, Data Interpretation, Statistical, Predictive Value of Tests, Probability, Students, Medical, villkorade sannolikheter
in
Läkartidningen
volume
115
pages
1 - 4
publisher
Swedish Medical Association
external identifiers
  • scopus:85044342826
ISSN
0023-7205
language
Swedish
LU publication?
yes
id
806fac16-402c-4efb-bc2f-9af867d8ff5f
alternative location
http://www.lakartidningen.se/Klinik-och-vetenskap/Originalstudie/2018/03/Naturliga-antal-forbattrar-formagan-att-tolka-testresultat/
date added to LUP
2018-03-26 16:34:40
date last changed
2019-02-20 11:12:00
@article{806fac16-402c-4efb-bc2f-9af867d8ff5f,
  abstract     = {<p>The ability to draw statistical inferences from test results may be generally limited among physicians. A new way of presenting statistics, called natural frequencies, has been shown to improve this ability. The current study is the first to investigate this effect in Sweden, involving senior medical students. An intra-individual cross-over design was used in which participants answered a statistical inference task presented with natural frequencies and another with percentages, which has been the customary format. A total of 74% made a correct inference on the natural frequencies task, as compared to 54% on the percentages task, with an odds ratio of 3.2, p = 0.002, 95% CI 1.52-6.81. The findings indicate that the effect of using natural frequencies arises also in a Swedish context.</p>},
  author       = {von Schreeb, Sebastian and Merlo, Juan and Psouni, Elia},
  issn         = {0023-7205},
  keyword      = {Surveys and Questionnaires,Data Interpretation, Statistical,Predictive Value of Tests,Probability,Students, Medical,villkorade sannolikheter },
  language     = {swe},
  month        = {03},
  pages        = {1--4},
  publisher    = {Swedish Medical Association},
  series       = {Läkartidningen},
  title        = {Naturliga antal förbättrar förmågan att tolka testresultat},
  volume       = {115},
  year         = {2018},
}