Table 3.

Consent Form Response and Participation Rates for Consent Procedures by School and Method.

Consent Procedure	Type	Response Rate		Acceptance Rate		Participation Rate
		% of Total	N	% of Responding	N	% of Total
Given to students to deliver to parents (N=2754)	Active	8.3%	228	100%	228	8.3%
All mailing (N=7394)	Active	6.6%	490	55%	270	3.7%
Stand-alone mailing to parents (N=3000)	Active	2.5%	76	58%	44	1.5%
Mailing preceded by primer (N=2200)	Active	12.5%	275	38%	105	4.8%
Mailing followed by reminder phone calls (N=2194)	Active	6.4%	140	45%	63	2.9%
Given in-person to parent at school event (N=3400)	Active	35%	1199	65%	779	22.9%
Mailed “opt out” forms (N=4500)	Passive	0%	0	N/A		100%

Note: Response rate refers to the percentage of consent forms (active) or “opt out” forms (passive) returned out of the total number distributed. Acceptance rate refers to the percentage of returned consent forms permitting youth participation in suicide prevention activities. Acceptance rates are not presented for passive consent procedures, as all persons who did not respond are considered to have accepted; therefore (Acceptance Rate) = (100% – Response Rate). Participation rate refers to the percentage of youth participating in the suicide prevention program out of the total number of youth (i.e., youth whose parents returned consent forms permitting participation under active consent procedures or youth with a lack of returned “opt out” forms under passive consent procedures).