The study was a very simple cohort study. They took 3600 kids who were born in 1975/76, followed them for 40 years, and split them up based on how stressed their mothers reported being before they were bornpic.twitter.com/iILZbYkTvB
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If you read that table, kids exposed to "any" stress have 3.37x the odds of having any diagnosis of personality disorders, but the confidence interval goes from 1.61x to 7.07x That's ~huge~
TL:DR: - association between stress in pregnancy and kids getting personality disorders - very weak - risk increase is tiny - statistical analysis is problematic - HUGE potential for residual confounding - ALMOST CERTAINLY NOT SOMETHING FOR MUMS TO WORRY ABOUT
Now, while the media certainly had a role to play in the misinterpretation of this study, I think the problem started in the conclusions This is not well worded at allpic.twitter.com/cIm8jvpLvi
The authors have been quoted elsewhere saying that this definitely isn't causal, but if you read the conclusions of the study it sounds like it absolutely is That's a huge problem
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