Where are the stats on how often people use their tablets in the bathroom?

According to an illuminating list put out by The Economist (12 stats that matter to digital publishing):

• More than a third of US adults are expected to own a tablet by 2014.
• iPad users look at 40 pages of content (unspecified whether web or book) on average per use.
• The Financial Times has approximately 305,000 print subscribers and 285,000 digital subscribers.

Guess people still aren't reading, though, huh? Maybe we need to revise that line of thinking.