Health Promotion and Human Behavior : Kyoto University / 京都大学大学院 医学研究科 社会健康医学系専攻 健康増進・行動学分野


EBM Toolbox

Audio-visual materials



Video Interview with Professor Furukawa: Deputy Editor of Evidence-Based Mental Health

A nine-minute video interview with Professor Furukawa was recently published on the homepage for the journal Evidence-Based Mental Health, as part of an introduction to its new editorial board. Dr Andrea Cipriani, Editor of the journal, interviews Professor Furukawa about his personal and professional viewpoints. Please visit to watch this video.

JAMAevidence Podcast

Two podcasts by Professor Furukawa are available at JAMAevidence homepage at

  1. A 16-minute podcast on "Diagnostic Tests: Interview With Dr Toshi A. Furukawa"
  2. A 9-minute podcast on "Measuring Patients' Experience: Interview With Dr Toshi A. Furukawa"


I have prepared an introductory video series for evidence-based mental health, covering such topics as:

  1. Why evidence?
  2. Human observation
  3. Evidence has a hierarchy
  4. How strong is evidence?
  5. How can I practice evidence-based mental health?
  6. A clinical scenario
  7. Clinical questions
  8. How to search the literature
  9. Thought experiment: ceteris paribus
  10. Internal validity
  11. Quantifying the results
  12. External validity

Each video lasts less than 10 minutes and you can listen to them in your spare time. Please enjoy!

Worksheets for critical appraisal

For journal clubs where you do not start from a patient, you can use the following worksheets [in English].

Please feel free to download and use the following worksheets [in Japanese].

Useful spreadsheets

 Professor Robert Newcombe (Emeritus Professor of Biostatistics, Cardiff University) has provided a very useful suite of spreadsheets to calculate 95% confidence intervals for proportions and related quantities. Professor Newcombe has kindly allowed us to provide the link here.


NNT Calculator can calculate RR, OR, RD and NNT, from a 2*2 table.

NNT Calculator2 can calculate NNT, from effect size (SMD). [Furukawa (1999) Lancet]

--- You can undersatnd how this works in a vividly visual and interactive way here. Must-see to understand the logic! (You can change the control event rate by clicking on the symbol after "Slide me". Please experiment with various effect sizes and control events to see how NNT changes.)

NNT Calculator3 can calculate NNT/NNH, from OR or RR and CER.


You may also find the following two conversion calculators useful and convenient.

From ES (SMD) to OR

From OR to RR


LR Calculator can calculate LR+, LR-, Se and Sp, from a 2*2 table.

SSLR Calculator can calculate stratum-specific likelihood ratios (also known as multi-level likelihood ratios) for 3 - 6 strata.

Post-test probability Calculator can calculate posterior probability, from SSLR and prior probability.


Proportion and its 95%CI

Proportion in normal range from threshold, mean and SD of a normal distribution. [Furukawa et al (2005) Int Clin Psychopharmacol]


One-stop spreadsheet that enables all the above calculations in Japanese is available here. [in Japanese]


Prediction model for remission among patients initiating antidepressant pharmacotherapy [based on Furukawa et al (2019 ) Psychological Medicine]

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