Height, also contagious.
Or “Correlation is still not the same as causation, someone alert the fucking media.”
Remember all those studies that said that fat was contagious and that if you knew a fat person you were more likely to get Teh FatZ0rZ.
Turns out you can also catch height, acne, and headaches.
…the same empirical specification used in previous studies (ie. logistic regression of own health ~ friends’ health + X) also “detects” significant and fairly large network effects for implausible outcomes such as acne, height, and headaches. For example, having a friend with headache problems increases the respondent’s chances of headache problems by about 47% on average. These implausible placebo findings suggest that previous findings may have been driven by confounding.
This study, which they are calling a “placebo” study essentially proves that there is an inherent bias in the way the other studies were conducted. The correlation between people who associate with each other is not proof that it causes them to get fat, or be smokers, etc.
Funny, I haven’t seen much press on this study, have you? So much for the Tall-isity Epidemic.