Chris Woods, who until just recently used to spearhead the Covert Drone War investigation at the Bureau of Investigative Journalism in London, writes in with the following comments on my post from the other day, "A Meta-Study of Drone Strike Casualties":
I found your metastudy extremely interesting---particularly on that question of overlaps [between the estimates of the different counting groups]. What should happen---as data publicly available on the drone strikes improves---is that we might expect convergence on the datasets. That does seem now to be taking place with NAF and BIJ---which are far closer than [they were] a year ago. As you note, being dynamic is the key.For your general [reference,] Oxford Research Group also did a meta-analysis of datasets back in 2011. BIJ's data hadn't been published then; and a number of Pakistan organisations still strove to record casualty data. A different time and different conclusions.