Use of billing codes in big data sets to find diagnoses can result in up to two-thirds of cases being mistakenly identified, new UCLA-led research finds. Databases frequently used for medical research ...

This article is adapted from an edition of our Off the Charts newsletter originally published in October 2021. Off the Charts is a weekly, subscriber-only guide to The Economist’s award-winning data ...

When you set up a business, one of your first tasks is deciding how to collect money from your customers. Customers might pay you with cash, credit cards or, if you offer it, an installment plan.