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Franz Babl: Behind the Scenes (Slide Design) – PREDICTing the Future



Researchers are delivering increasingly well-designed studies and validating them in multiple populations to provide the evidence needed to improve care. Furthermore, the increasing use of national and international research collaborations has improved our ability to test hypotheses and deliver interventions at an unprecedented scale. However, while good practice guidance exists for the design, methodology and delivery stages of this research, there often needs to be more practical guidance given to researchers on how best to present their research findings. While dissemination methodologies are widespread (creation of newsletters, embedding in national guidance etc.) a large amount of knowledge translation occurs at conferences between speakers and delegates. While grant-awarding bodies and peer reviewers often cast an (objectively) critical eye over the delivery phase of studies the ‘conference’ dissemination phase is less well regulated. To be blunt, often people are afraid to feedback to the experienced researcher that their presentation of their research findings wasn’t very good.

At the recent Don’t Forget the Bubbles conference a unique set of events occurred which allowed, prior to the conference, feedback to be given on slide design to the presenter but also there be an objective ‘reviewer’ in the audience who had seen the presenter’s previous presentation on this topic and was able to appreciate the difference the slide design made. This blog owes much to the good nature of Associate Professor Franz Babl, who not only allowed Grace Leo to revise his slides before the presentation but has allowed his original slides to be published openly.

Below are a selection, but not all, of the slides in a before and after format used in Franz’s talk on “Head Injury Rules in Children”. The aim is to demonstrate how simple changes can produce a more significant impact without any loss of content. While Knowledge Translation, in this case, can only be assumed and not demonstrated, feedback both quantitatively and qualitatively post-lecture was highly suggestive that the new slide deck was an improved version. 

Slide 1: The Title Slide

Inclusion of picture in background: This was done to add interest and chose to use a relevant picture that will come up in future slides. The image was edited to reduce saturation to create greater contrast with the talk title. This highlights the talk title as the critical component of the slide.

Removal of Franz’s title: Titles are important in documentation- however, as a conference speaker introduced by a chair and as himself –  Franz already has established credibility.  There was also duplication in the original slide in that affiliated groups were featured in the subtitles and logos. To simplify things, Grace moved the symbols to become more prominent and introduced a rectangular bar in the background to create clean lines in the revised slide.

Movement of the PREDICT logo from the top right corner into the white line: This helps simplify the slide and reduces distraction from the main point of this first slide – the title.

Additional Note on ‘Theme’: Throughout the presentation, the default ‘theme’ of the slide was removed. This was done unless there is an institutional requirement – institute logos can add to the clutter later slides.

Slide 2: CT or no CT – Case

Conversion of the case slide from one slide into three: This helps to “reveal” information in stages. This makes it easier for the audience to digest the story. It also emphasises the key question at the end (whether children with head injury require a CT) in cases such as this. Grace altered the question from “Does he need a CT scan…” to “Would you CT”. Direct questioning was used to better engage the audience by asking them to think about what they might actively choose.

Slide 3: CT or no CT – facts on head injuries

Removal of text into the notes section: Although the text was helpful information, it is also the same information Franz would tell the audience himself in his talk. Furthermore, lines such as “CT current gold standard” – are something that the audience is likely to be familiar with and is background information.

The enlarged graph to full screen: Graph enlargement was significant because the graph was challenging to read. By extending it to fill the screen, it can more clearly demonstrate its point: attributable risk of death from cancer related to the age at the time of CT.

Slide 4: What can we do beyond gestalt?

Removal of the second line of text: This provides a more significant opportunity for the speaker and the audience to discuss clinical decision rules without having them explicitly written.

Introduction of a picture of a person at a crossroads/two paths: The image added interest to the slide and is also relevant in decision-making as there are two baths on either side of the central figure.

Slide 5: Chalice trial

Removal of the detailed guidelines for CHALICE: This was a tricky decision as the CHALICE guidelines are extensive. Discussion with Franz resolved the concern, as the purpose of the slide was not to go into the details of the chalice guidelines but to provide a brief overview. This purpose enabled the simplification of CHALICE down to its core – that it is made up of criteria taken from history, examination and mechanism.

Removal of a screenshot of the title: This is a popular image for many presentations delivered on the research circuit. Many people use this to add a sense of credibility “See! This paper!” and recognise the contributors. However, the wording is so small usually screenshots like this are very difficult to read. When asking about the true purpose of screenshots like this – it is probably to enable the audience to locate the paper for themselves at a later time. Therefore – instead of providing everything, we should ask – what is the necessary amount of information required? It turns out when you enter CHALICE Dunning et al 2005 into Google – it will give you the paper as the second hit. Therefore – that itself is sufficient to enable the audience to be able to find the paper and check it for themselves. Keep in mind that introducing the slide with the journal article for the CHALICE trial in the slide before also helps the audience to locate the relevant paper at a later date.

Slide 6: PECARN trial

Removal of journal screenshot: See commentary on slide 5.

Enlargement of the PECARN decision tool: By enlarging and cropping the decision rule, it made the guide easier to see. The decision to keep much more details about the PECARN trial was made as the PECARN is discussed in greater detail later in the talk.

Slide 8: APHIRST further discussion

Removal of journal-title screenshot: Reduces text and highlights that the focus is the findings of the APHIRST trial.

Removal of the screenshot of the journal table: If your audience believes and trusts your authority – then instead of showing the original print screen of the data – it may be more helpful to focus on the point – which is the comparison in terms of sensitivity, specificity and the numbers of children missed in each trial.

On the absence of table lines: As there were not many lines, Grace elected to make the table lines mostly invisible. Increasing the spacing between the sensitivity/specificity results and the “missed” column – helps the audience more easily identify relevant numbers.

The use of the ‘blackboard’ backdrop: See slide 5 commentary

Slide 9: Great – let’s use PECARN!

The original slide was split into two halves: The slide was divided into the initial impression and then the “reveal” (which was taken from information from the following slide). As the original slide is a transition slide with few words, Grace made the text more prominent by placing it centrally and in a larger font.

Background image: This image was chosen to reflect the mood of the remarks with the imagery of illumination/ a large light as symbolic of a new idea or revelation.

Slide 13: Implementation of PECARN

Reduced word count: This helps reduce the number of words the audience is asked to read/consider. This allows the audience to focus on what Franz has to say.

Reformatted information into two columns: This created a more obvious comparison between the study in America vs Italy

Inclusion of map icons: Given the international nature of the research, Grace used an icon for each country. Part of the factors influencing this choice was America and Italy are easily identifiable countries. The visual input of the picture of the countries could also help audience retention in remembering that there was a comparison between American and Italian studies.

Slide 19: Are we too good for rules?

Increase in font size, the inclusion of background image: See comments on slide 4. This question forms part of a theme of questions to be answered.

Slide 23: Thank you

Change to picture: Thank you is a common end slide. There are quite a lot of pictures online that can be used for this purpose.

Getting rid of this slide: There are also different alternatives to the traditional ‘thank you’ slide that could have been used 1) a question slide, 2) ending with a firm conclusion point, 3) a quote, 4) details for how to contact the speaker 5) a call to action 6) a ‘teaser’ for what might come next or 7) a full circle slide– for example, a picture of the 14yo boy from the opening case – back at home/school/playing sport.


Medicine is full of overlaps with other fields. We can learn repetitive skill training from elite athletes, checklists from aeronautics and learn to reason and critique cases like lawyers. By emulating aspects of different fields we can find skills and ways of thinking which may improve our own practices. Therefore we can also communicate effectively like good teachers or marketers. The latter is particularly true when presenting at conferences. An effective presentation with helpful slides can help to make your message clearer. This enables your audience to think and engage with the material better and improve the translation of knowledge. However, there is very little training in medical school on how to present well and consider the function of your story. There is a growing movement recognising the importance of this – seen in growing resources online, presentation skills workshops at conferences like SMACC and DFTB17’s own experimentation by introducing a speaker-liaison role. 

It is straightforward to get stuck in the same way of doing something. If you aren’t challenged by your presentation approach – it can be difficult to consider how it could be improved. We hope this post will encourage anyone presenting at a conference, whether a senior academic or a first-year student, to review their slide set and consider how they may improve knowledge transfer to their audience.


This post was written by Damian Roland and Grace Leo with the kind permission of A/Prof Franz Babl, whose slides will never be the same again.


  • Grace is a Registrar at Sydney Children's Hospital. She loves innovative medical education and paediatrics. She is on the organising committee for the DFTB18 and SMACC conference. Grace is a former internal director of the AMSJ. She enjoys board games, cooking and graphic design.

  • Damian Roland is a Paediatric Emergency Medicine and Honorary Associate Professor. His research interests include scoring systems in emergency and acute care and educational evaluation. Damian also chairs PERUKI (Paediatric Emergency Research United Kingdom and Ireland), which gives him and the team an opportunity to raise awareness of the important of research and evidence based practice at scale. The list of the many things Damian hasn’t done or achieved is far longer but through these he learns and develops new ideas.


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4 thoughts on “Franz Babl: Behind the Scenes (Slide Design) – PREDICTing the Future”

  1. Some really useful guidance here. Are there any other resources you can signpost to on academic conference poster design or tips on which is the best (easiest/freely available) software to use to create infographics and academic posters? Thanks

  2. Thank you Grace, Damien and especially Franz for allowing tweaking and publication. While this focuses on the improvement of media, it’s the freedom this brings to the speaker from stopping reading out the slide content and actually talking to and interacting with an audience that is liberating. The scientific audiences of the world thank you for this post!