1. Visual Aids for Oral Communication Agnes Hajdu Oslo, EpiTrain IV, 2006 Based on EPIET material

2. Exchange of information Transform –data -> information -> knowledge Share –Paper (reports, articles) –Oral (presentations) Does our message come across?

4. Digital versus analog US pedestrians Pedestrian crossing X = cross ! Digital pedestrianAnalog pedestrian

5. BelgiumFrance Burma SpainZimbabwe Analog pedestrians from around the world Russia

6. Preparation of visual aids Text first, then visual aids The less fancy, the better Always related to what you say

8. Two types of visual aids Visual data –digital: tables –analog: graphs, charts, maps Visual reinforcement –bullet lists

9. Visual data Tables, charts, maps The simpler the better Digital or analog ? Walk the audience through

10. Food Specific Attack Rates, Outbreak of Salmonellosis, Prison X, Dover, Delaware, September 1992

11. Food Specific Attack Rates, Outbreak of Salmonellosis, Prison X, Dover, Delaware, Sept 1992

12. Outbreak of Salmonellosis in a Prison, Delaware, 09/1992 Food Specific Relative Risks, Saturday September 12, Lunch ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ Chicken Salad Bread Lettuce Leaves Sliced Tomatoes Pear Halves Iced Tea Margarine Vegetable Soup Food 0.5550 Relative Risk (log scale)

13. Graphical visual data Graphs, charts and maps One point per slide No 3D Appropriate color palette

14. Characteristics of colors BrightnessHue QuantitativeQualitative

15. How to select a color or pattern 2 colors : 3 colors : or

16. AIDS Annual Rates per 100,000 Population for Cases Reported May 1990 through April 1991

18. Visual reinforcements: bullet lists Use keywords < than 12 lines < 5 words per line Break line properly

19. Methods The karaoke slide We conducted a retrospective cohort survey including all people attending the visit of the park A case was defined as a papular or papulo-vesicular pruritic rash, among participants, 12 hours or more after the exposition to seawater

20. Methods Survey –retrospective cohort –all participants Case definition –rash (papular or papulo-vesicular) –> 12 hours after exposition

21. Effective text attributes Sans serif font Bold type Lower case letters Good contrast Serif font Normal type UPPER CASE LETTERS Poor contrast PreferAvoid

22. What not to do No bright text on bright background No lot of pictures on one page No animations unless it is relevant No too much information on one page No CAPITAL letters

23. What to do Keep it simple Keep your audience in mind Main points with 4-6 lines of text per slide Use pictures if relevant Avoid animations and distracting elements

24. Introduction to Power Point Lets open it!