Arm 1: Mail + telephone	Arm 2: Paper invite + email (x2) + mail (x2)	Arm 3: Paper invite + email (x3) + mail	Arm 4: Email (x4) + telephone	Arm 5: Email (x4) + mail + telephone	Arm 6: Email (x4) + mail (x2)	Arm 7: Text + email + text + email + mail (x2)	Arm 8: Paper invite + text + email (x2) + mail	Arm 9: Paper invite (URL only) + email (x2) + mail (x2)	Overall
N Sampled	2,844	2,848	2,846	3,193	3,192	3,195	3,191	2,841	2,841	26,991
N Ineligible	137 (4.8%)	49 (1.7%)	26 (0.9%)	152 (4.8%)	172 (5.4%)	45 (1.4%)	38 (1.2%)	36 (1.3%)	49 (1.7%)	704 (2.6%)
N Respondents	690	433	378	697	824	482	555	405	429	4,893
Response rate among eligible	25.5% (ref)	15.5%***	13.4%***	22.9%*	27.30%	15.3%***	17.6%***	14.4%***	15.4%***	18.60%