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Science for journalists. Tutor: Workshop:. Trained over 950 student journalists at journalism training institutions across the UK. Trained over 300 practising journalists drawn from national, local and specialist media outlets.
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Tutor: Workshop:
Trained over 950 student journalists at journalism training institutions across the UK Trained over 300 practising journalists drawn from national, local and specialist media outlets Trained over 200 public relations professionals and science communicators
Icebreaker • Introduce yourselves and discuss what you would like to get out of the session • How confident are you in reporting on Science and Statistics • Does anyone have a background in science/statistics/maths
The MMR vaccine: the serious consequences of bad science reporting Combined MMR vaccine introduced Measles vaccine introduced MMR-autism link suggested
From lab bench to front page academic journal time space interest editorial fame funding prestige impact scientist press officer journalist
The Scientific Method Hypothesise Test Observe
Common sense (or rationalism) Hypothesise Conclude Observe
Experimental controls • Size of study • Statistical significance • Random selection • Measure other factors that might affect outcome • Unbiased observations: double-blind • Include subjects without vaccination • The more, the better • The likelihood that your results are luck • To avoid confounding factors • To detect possible confounding factors • Neither the experimenter, nor the subject knows whether they are in the control group (placebo treatment) Designing a good experimental study: Does the MMR-vaccine cause autism?
How would we design an experiment to test whether MMR causes autism?
Test Uchiyama et al. 2007 Scientific method Hypothesise Wakefield et al. 1997 Observe
How to read a scientific paper (on a deadline) Title A precise description of paper Abstract A summary of what they did and what they found Introduction The motivation and context of the research Methods Are they appropriate for the claims made? Results Tables, charts and lots of data Discussion The author’s views of what the results mean (or don’t)
“Scientists constantly tell us contradictory stories” http://www.dailymail.co.uk/health/index.html
How excited should I be? Holy crap! Phase III (marketability) Phase II (efficacy) Phase I human trials (safety) Animal tests In vitro tests Research announcement Hypothesis Yawn
Review articles: summarising the findings from literature 6/9/2010
Systematic reviews: the gold standard http://www.cochrane.org/
Dissecting a press release • Source? • Preliminary study from conference, not peer-reviewed • Is it a controlled experiment? • No comparison to non-diet drinks • What do we know about type of drink? • Very few details on drinks • What can you tell me about the subgroups? • Don’t know size of subgroups that drink a lot of diet drinks • Does the research prove diet drinks cause heart attacks? Can it? • Observational so can only show a link, not cause and effect • How do they know how much people drank? • Relies on self-reporting of diet, and only at start of study not as it goes along • What other risk factors were taken into account? • Controls for some factors but not all (family history of strokes? Other dietary habits? Weight gain?) • What was the increase in heart attack risk? • Is it 61% or 48%? • What is the baseline risk of heart attack? • Only relative risk given not absolute
Dissecting a News Article • Task: You have been chosen as judges of the Science Journalism Awards for the nutrition and food reporting category? • Read through the following submissions for the Animal Protein category, identify which is better and why (5 mins) • Now use the SMC guidelines on science & health reporting and see how they apply to the animal protein submissions (5 mins)
Statistical analysis Uncertainty in Science: Why won’t scientist give you a straight answer? 1. STATISTICAL SIGNIFICANCE Test Hypothesise “There’s a high probability that your hypothesis is correct” Observe
Uncertainty in Science: Why won’t scientist give you a straight answer? 2. THE DEFINITIVE EXPERIMENTS ARE IMPOSSIBLE Do man made CO2 emissions cause global warming? The scientists say: “The balance of evidence suggests that there is a discernible human influence on global climate"
Uncertainty in Science: Why won’t scientist give you a straight answer? 3. IT’S IMPOSSIBLE TO PROVE THAT SOMETHING IS SAFE (BUT EASY TO SHOW THAT IT’S DANGEROUS)
Uncertainty in Science: Why won’t scientist give you a straight answer? 4. WE GENUINELY DON’T KNOW… YET What is the biological basis of consciousness? Why is there more matter than antimatter? Are there smaller building blocks than quarks? Is ours the only universe? Do mathematically interesting zero-value solutions of the Riemann zeta function all have the form a+bi?
Useful organisations and further info Science Media Centre There to help journalists who: • Need a news interview with a scientist • Have a question about a major science story • Need a background briefing on a scientific topic Sense About Science There to: • Respond to inaccuracies in claims about science • Help those who need expert help contact scientists about issues of importance • Brief non-specialists on scientific developments and practices
Useful resources: science publication databases PubMed US National Library of Medicine Free search tool for finding PEER-REVIEWED scientific studies The Cochrane Collaboration Library of systematic reviews in healthcare European Food Safety Authority Library of systematic reviews of nutrition and health claims for foods