Suppose In a study about the effects of caffeine on sleep, participants were given either a caffeinated beverage or a non-caffeinated beverage to consume before bedtime. The results showed that those who consumed the caffeinated beverage took longer to fall asleep compared to those who consumed the non-caffeinated beverage.
Can we infer that "Consuming caffeine before bedtime improves sleep quality."? Yes, no, or maybe?