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. 2022 Mar 24;8(1):e12280. doi: 10.1002/trc2.12280

TABLE A3B.

Regression discontinuity in time (RDiT) design linear model – Spline P‐values when varying discontinuity year

Spline for 2013 FDA guidance Spline P‐value
March 2007 .2789
March 2008 .0716
March 2009 .0189
March 2010 .0062
March 2011 .0024
March 2012 .0006
March 2013 (base case) .0003
March 2014 .0004
March 2015 .0016
March 2016 .0094
March 2017 .0313
Spline for 2018 FDA guidance Spline P
March 2014 .7516
March 2015 .6839
March 2016 .3498
March 2017 .0951
March 2018 (Base Case) .0220

Abbreviation: FDA, Food and Drug Administration.