. 2015 Aug;105(8):e49–e54. doi: 10.2105/AJPH.2015.302703

TABLE 2—

Proportion of Control States With Results as Extreme as or More Extreme Than Connecticut: 1996–2005

Control States Included^a	Firearm	Nonfirearm
≤ 20× MSPE	3/38	13/39
≤ 5× MSPE	0/30	11/32
≤ 2× MSPE	0/24	8/26

Note. MSPE = mean squared prediction error.

^{^a}

Results from permutation tests including control states whose synthetic control’s MSPE is ≤ 20×, 5×, and 2× that of the MSPE of Connecticut’s synthetic control.