がほぼ解き明かされたとして、Robin HansonがこのNBER論文を紹介している(エズラ・クライン・ブログのBrad Plumerエントリ経由)。 以下はHansonの引用から。 We find that most of the additional deaths that occur during times of economic growth are among the elderly, particularly elderly women. … Cyclicality is especially strong for deaths occurring in nursing homes, and is stronger in states where a higher fraction of the elderly reside in nursing homes. … Staff