Take, for instance, the recent paper by Raifman, Moscoe, Austin, and McConnell, entitled
Difference-in-Differences Analysis of the Association Between State Same-Sex Marriage Policies and Adolescent Suicide Attempts,which was widely touted as proving that the introduction of same-sex "marriage" (SSM) in America reduced adolescent suicide by 7% overall, and 14% among homosexuals and lesbians. Right away, an alarm bell rang. How could even a large reduction among a very small minority result in such a large overall reduction? It was time to examine the document in detail.