4 ms·
Me before reading: "this study, like ~every study, will detect no effect on all-cause mortality because that needs a crazy big sample size" After reading: "thi
by apsec112 3y ago
Me before reading: "this study, like ~every study, will detect no effect on all-cause mortality because that needs a crazy big sample size"
After reading: "this study, like ~every study, detected no effect on all-cause mortality because that needs a crazy big sample size"
A three-year study where one group magically had zero car crashes would need a sample size of 5,000,000 to detect a difference in all-cause mortality. It's really hard. (80% chance of p < 0.05)
- hedora 3y agoThey actually did show an improvement of all-cause mortality for one of the screens (corresponding to a 4 month increase in life expectancy), and "insignificant" improvements in others. (The headline is probably technically true, but I think it is intentionally misleading and disingenuous.)
- deleted 3y ago[deleted]