Friday Foolery #42 So You Think You Can Dance Your PhD Thesis?

5 11 2011

It’s hard to explain your research to non-scientists. My PhD defense was preceded by a slide show (yes, that was once-upon-a-time that we didn’t use Powerpoint). It was the only part the public could follow a bit. But it is too long, static and detailed.

That cannot be said of these videos, where PhD’s from all over the world interpret their graduate research in dance form.

The videos below are the winners of the 2011 edition of the Dance your PhD contest. For the 4th year, this contest is organized by Gonzolabs & Science. See

There are 4 categories—chemistry, physics, biology, and social sciences

The overall winner of 2011 was Joel Miller (category physics), a biomedical engineer at the University of Western Australia in Perth. Miller apparently compensated his poor dancing skills and the lack of a video by applying stop-motion animation (stringing together about 2,200 photos to make it look as though his “actors” were dancing). His video shows the creation of titanium  alloys that are both strong and flexible enough for long-lasting hip replacements.
I love the song by the way. It fits perfectly to the dance scene.

You can see all winning videos here and all 2011 (this years) PhD videos here. You can also check out the 2010 and the 2009 PhD dances.

The other winners of 2011 were  FoSheng Hsu (chemistry category) who guides viewers through the entire sequence of steps required for x-ray crystallography,  Emma Ware (social science) who studies the traditional ‘stimulus-release’ model of social interaction using pigeon courtship (a beautiful pas a deux) and Edric Kai Wei Tan (biology) with the funny dance about Smell mediated response to relatedness of potential mates, simply put “fruit fly sex”.

Being Dutch, I would like to close with the Dutch winner of the biology category in 2010, Maartje Cathelijne de Jong who dances her PhD, “The influence of previous experiences on visual awareness.”


Thesis Mariska Leeflang: Systematic Reviews of Diagnostic Test Accuracy.

22 08 2008

While I was on vacation Mariska Leeflang got her PhD. The ceremony was July 1st 2008.

Her thesis is entitled: Systematic Reviews of Diagnostic Test Accuracy.

Mariska is a colleague working (part time) at the Dutch Cochrane Centre (DCC). She studied veterinarian science in Utrecht, but gradually noticed that she was more interested in research than in veterinary practice. Four years ago she applied for a job at the dept. of Clinical Epidemiology, Biostatistics and Bioinformatics (KEBB) at the Amsterdam Academic Medical Centre (AMC). Having a cv with all kinds of odd subjects like livestock and courses delivering anesthetic drugs from a distance, she thought she would never make it, but she did.

Those 4 years have been very fruitful. She did research on diagnostic accuracy, is member of the Cochrane Diagnostic Test Accuracy Working Group and first author of one of the Cochrane pilot reviews of diagnostic test accuracy (chapter 7 of thesis). [Note: Cochrane Diagnostic Test Accuracy Reviews are a new initiative; till recently all Cochrane Systematic reviews were about health care interventions].
Mariska also supports authors of Cochrane systematic reviews, gave many presentations and led many workshops. In fact, she also gave in-service training to our group of Clinical Librarians in diagnostic studies and together we have given several courses on Evidence Based Medicine and Systematic Reviews. In leisure time she is Chair of “Stichting DIO” (Vet Science & Development Cooperation)

She will continue to work for the Cochrane Collaboration, including the DCC, but has also accepted a job at the Royal Tropical Institute (

Because of her backgound Mariska often gives her work a light “vet” touch.

“The cover of her thesis for instance is inspired by Celtic artwork and reflects the process of a systematic review: parts become a whole. The anthropomorphic (human-like) and zoomorphic (animal-like) creatures represent the background of the author. The stethoscopes and the corners refer specifically to diagnostic test accuracy reviews.The snakes eating their own tail stand in Celtic mythology for longevity and the ever-lasting life cycle.”

Also, she often closes her presentations with a slide showing swimming pigs, the pig being symbolic for “luck”.

So I would like to close this post in turn by wishing Mariska: “Good Luck”

Thesis: ISBN: 978-90-9023139-6
Digital Version at :
Index: (I’ll come back to chapter 1 and 2 another time)
Chapter 1: Systematic Reviews of Diagnostic Test Accuracy – New Developments within The Cochrane Collaboration – Submitted
Chapter 2: The use of methodological search filters to identify diagnostic accuracy studies can lead to the omission of relevant studies – J Clin Epidemiol. 2006;59(3):234-40
Chapter 3: Impact of adjustment for quality on results of meta-analyses of diagnostic accuracy – Clin Chem. 2007;53(2):164-72
Chapter 4: Bias in sensitivity and specificity caused by data driven selection of optimal cut-off values: mechanisms, magnitude and solutions – Clin Chem. 2008; 54(4):729-37
Chapter 5: Diagnostic accuracy may vary with prevalence: Implications for evidence-based diagnosis – Accepted by J Clin Epidemiol
Chapter 6: Accuracy of fibronectin tests for the prediction of pre-eclampsia: a systematic review – Eur J Obstet Gynecol Reprod Biol. 2007;133(1):12-9
Chapter 7: Galactomannan detection for the diagnosis of invasive aspergillosis in immunocompromized patients. A Cochrane Review of Diagnostic Test Accuracy – Conducted as a pilot Cochrane Diagnostic Test Accuracy review


Mariska Leeflang is op 1 juli 2008 aan de Universiteit van Amsterdam gepromoveerd op het onderwerp:“Systematische Reviews van de Diagnostische Accurratesse”.

Mariska is eigenlijk een collega van mij. We werken samen part time op het Dutch Cochrane Centre (DCC). Zij heeft diergeneeskunde gestudeerd in Utrecht, maar kwam er gaandeweg toch achter dat ze liever onderzoeker dan practiserend dierenarts wilde zijn. Toen ze vier jaar geleden ging solliciteren bij de afdeling Klinische Epidemiologie, Biostatistiek en Bioinfomatica (KEBB) van het AMC gaf ze zichzelf weinig kans met vakken als graslandbeheer en een cursus ‘verdoven op afstand’ op haar cv. Maar ze werd wel aangenomen. En terecht!

Die 4 jaar zijn zeer vruchtbaar geweest. Ze deed diagnostisch onderzoek, is lid van de Cochrane Diagnostic Test Accuracy Working Group en eerste auteur van een pilot diagnostisch accuratesse review (H 7 van proefschrift). Cochrane Systematische Reviews van Diagnostische Accuratessestudies zijn een nieuw type Systematisch Review, naast de bestaande Cochrane Reviews van interventies.
Mariska heeft veel presentaties en workshops gegeven, ook in Cochrane verband. Ze heeft zelfs ons clinical librarians bijgeschoold op het gebied van diagnostische stusies. Samen geef ik met haar EBM-cursussen en de cursus “Systematische Reviews” voor Cochrane auteurs. In haar vrije tijd is ze voorzitter van de Stichting DIO ( Diergeneeskunde in Ontwikkelingssamenwerking).

Ze zal voor de Cochrane Collaboration blijven werken, maar werkt sinds kort ook 2 dagen per week op het Koninklijk Tropeninstituut (KIT).

Vaak zie je dat Mariska vanwege haar achtergrond als diergeneeskundige vaak een link maakt naar dieren.

Op de omslag van haar boekje dat gebaseerd is op Keltisch kunstwerk wordt het proces van een systematisch review als volgt weergegeven: Alle delen worden samen een geheel. The mensachtige en dierlijke wezens vormen Mariska’s achtergrond. De stethoscoop en de hoeken staan voor de diagnostische accuratessereviews. De slangen, die hun eigen staart opeten staan in de Keltische mythologie voor een lang leven en de eeuwigdurende levenscyclus.

Ook sluit ze haar presentatie vaak af met een plaatje met zwemmende biggetjes, die voor “geluk” staan.

Dat lijkt me ook hier een passend slot: Veel geluk Mariska!!