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. Author manuscript; available in PMC: 2023 Sep 11.
Published in final edited form as: Pediatrics. 2020 Dec;146(6):e20200213. doi: 10.1542/peds.2020-0213

FIGURE 1.

FIGURE 1

Quarterly number of ED visits per 100 child-years for participants versus controls from 2014 to 2017, highlighting the QI collaborative (mid-September 2015 to mid-May 2016). Solid lines indicate the data analyzed and presented in the main analysis comparing the calendar year 2017 vs 2014.