Comparing the mobilising effects of in-person canvassing to postal reminders – experimental evidence from a longitudinal election study

Figures & data

Table 1. Average treatment effect for all groups and for the treated and untreated groups regarding the three outcomes of interest.

		Proportion taking part in:
		the recruitment survey		the first panel wave		all three panel waves
Turkish origin	Control condition (N = 2,526)	12.4	12.4	4.4	4.4	2.4	2.4
	Experimental condition (N = 940)	33.0		9.6		4.0
	Δ Treatment vs. Control	+20.6***		+5.2***		+1.6**
	Exp.: not reached (N = 659)		22.1		7.5		2.9
	Exp.: directly reached (N = 311)		34.4		13.8		6.4
	Δ Experiment (not treated) vs. Control		+9.7***		+3.1**		+0.5
	Δ Experiment (treated) vs. Experiment (not treated)		+12.3***		+6.4***		+3.6**
Post-Soviet origin	Control condition (N = 879)	17.2	17.2	6.3	6.3	3.6	3.6
	Experimental condition (N = 939)	38.6		9.1		4.3
	Δ Treatment vs. Control	+21.4***		+2.8**		+0.7
	Exp.: not reached (N = 658)		24.4		6.5		3.2
	Exp.: directly reached (N = 312)		41.2		14.1		6.4
	Δ Experiment (not treated) vs. Control		+12.0***		+2.1		+0.8
	Δ Experiment (treated) vs. Experiment (not treated)		+21.4***		+7.6***		+3.2*

*** p < 0.001, ** p < 0.01 (t-test one-sided), ANOVA, Bonferroni correction for multiple comparisons, comparison: Control vs. treated not displayed.