majority of the decrease was from young mothers and students. Let me repeat: "However given that the original data/study is unavailable (merely news reports ab

majority of the decrease was from young mothers and students. Let me repeat: "However given that the original data/study is unavailable (merely news reports about it), it's impossible to know if that effect was significant. (Back in the day they weren't as good at multiple comparisons corrections as they are now.)"