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Saturday, August 31, 2019

A C-Section Study and Media Coverage

If the science were not confusing enough, its coverage in the mass media has added another layer of murk. News reports hype tentative findings and weak correlations as “breakthroughs” in the quest for autism answers. When the research yields mixed results, the media headlines can be comically inconsistent. Consider how various publications covered a 2013 study on the impact of in vitro fertilization:
  • RARE IN VITRO TECHNIQUE RAISES AUTISM RISK, STUDY SAYS
  • IVF PROCEDURES DO NOT BOOST AUTISM RISK
  • SOME FORMS OF IVF LINKED TO AUTISM, MENTAL DISABILITY
  • IVF, AUTISM NOT LINKED, BUT STUDY FINDS RISK OF INTELLECTUAL DISABILIT

Recent headlines suggest very different interpretations of an article about cesarean sections. 
Judge the article for yourself:

This systematic review and meta-analysis explored the association of cesarean delivery with a wide range of neurodevelopmental and psychiatric outcomes. Compared with vaginal delivery, cesarean delivery was associated with increased risk of several neurodevelopmental and psychiatric disorders. The estimates for ASD (33% increased odds) and ADHD (17% increased odds) were statistically significant, but other disorders, such as learning disabilities, tic disorders, OCD, and eating disorders, presented with similar or higher odds, although these were not statistically significant, possibly because of the modest number of studies.
...

The mechanisms underlying the observed associations remain unknown and require empirical investigation to examine whether cesarean delivery plays a causal role in the development of neurodevelopmental and psychiatric disorders.