Afghan drone strikes resulted in 10 times more civilian casualties than manned air strikes

Study: Afghan drone strikes resulted in 10 times more civilian casualties than manned air strikes – LifeWise: 

The study used classified military data on air strikes in Afghanistan from mid-2010 to mid-2011 which includes the civilian casualties caused by the strikes. This period included the most air strikes during the entire war in Afghanistan.
The study was co-authored by Larry Lewis, a principal research scientist at the Center for Naval Analyses, a federally funded research and development center.
Lewis told the Guardian that missile strikes carried out by drones were a staggering 10 times more deadly to civilians in Afghanistan than air strikes conducted by fighter jets.