McDowall, Loftin, and Wiersma (1996) avoid our criticisms of the univariate interrupted time series design (ITSD) by misstating our criticisms, by addressing what they claim we ”implied” rather than what we plainly stated, and by ignoring crucial points in...
Interrupted time series designs are commonly used to assess the impact of gun control legislation, as well as other legal and policy changes. Three common problems in the use of these designs-(1) selection of an appropriate control series, (2) specification of the...
