Fig. 2
From: Utilising identifier error variation in linkage of large administrative data sources
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12874-017-0306-8/MediaObjects/12874_2017_306_Fig2_HTML.gif)
Variation in identifier error rates by hospital provider (n = 167). Each dot represents one hospital (hospitals with <500 matches were excluded). Inner lines = 95% control limits; outer lines = 99.8% control limits