Apple iOS 7.1 Accused of Draining Batteries in iPhones and iPads

It has been reported that the iOS 7.1 update has been draining batteries compared to previous builds.  My iPhone 5 is working great.  In fact, I thought it was working better with certain apps opened.  I believe apps that haven’t been updated are often the cause of this phenomenon. If the update alone was the culprit, I would think 100% of the devices would be affected.

There must be some commonality affecting specific devices.  Anyone having issues since upgrading?