Skip to main content
. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: JAMA Ophthalmol. 2015 Aug;133(8):888–896. doi: 10.1001/jamaophthalmol.2015.1312

Figure 1. Follow-up Flowchart.

Figure 1

Of 42 sites, 34 were randomized on the site level (at 17 sites all investigators were assigned to Intervention, at 17 sites all investigators were assigned to Control) and 8 were randomized on the investigator level.