This article from the Washington Post is noteworthy only because it highlights how a small coding error can cause a major change in a study’s results.  The original study claimed that men were more likely than women to divorce a spouse who fell ill.  The study was based on a longitudinal survey.  A subsequent replication study found that the result was driven by a coding mistake, in which people who left the study were incorrectly coded as having become divorced.  To read more, click here.