79% of portable gaming done at home, no word on how much is done on the toilet

Research done by the NPD has revealed that 79 percent of iPhone, PSP, and DS owners use the handhelds at home more so than out of the house. The research has also shown that people are playing on handhelds more now than they were three months ago.

The NPD broke down some stats to Edge showing which features of the portable devices are being used most. Most notably is the increase of iPhone owners playing games in the last three months, which makes sense as some decent games have come out on the iPhone lately.

The only time I ever take my DS out of the house is when I’m going to the airport. Otherwise, I’m much more comfortable playing my DS in bed. How about you, Dtoiders? Do you use your handhelds more often at home or on the go?