The USN would find any such study to be very suspect, as its experience (with far more aircraft over vastly more operating hours) is that very few incidents of both engines failing are due to any cause other than fuel starvation (or battle damage).
The USN has, on the other hand, had thousands of single-engine failures (including where the engine came apart and damaged surrounding structures) where the second engine either brought the aircraft back or kept operating until the aircraft became unable to fly due to other reasons.
I am aware of close to a score of aircraft that returned to either the base or carrier where I was stationed with one engine out, but in that time only 5 twin-engined aircraft from those bases were lost... three of those at sea with no communication from the crew to indicate what caused the crash, one was damaged beyond repair in an airshow accident caused by pilot disorientation leading to pilot error, and one of those was due to a pair of pliers left in the aircraft during depot-level repair jamming the elevators at a slight down angle (the crew attempted to regain control for several minutes before ejecting as they dropped below 2000' agl in a wings-level attitude with both engines running).
Last edited by GreenKnight121; 2nd Aug 2010 at 00:29.