A composite statistic derived using this formula: Points + Total Rebounds + Assists + Steals + Blocks - Field Goal Missed - Free Throw Missed - Turnovers.
Efficiency is used as a tool to calculate the overall value of a player.
Efficiency, or EFF, is perceived as an inaccurate way to assess a player's overall value. Because it only takes into account rebounds, assists and blocks, it's not the best assessment of a player's value on defense. A more faithful efficiency metric used more often by NBA advanced statisticians is John Hollinger's PER, or Player Efficiency Rating.
Miami Heat small forward Lebron James led the league in efficiency per game in 2011 with 28.6.