Table 2.

Cost effectiveness of the online survey relative to previous postal surveys

Study	Cost of mail‐out/online advertising (AU$)	Completed surveys	Cost per completion (AU$)
Mental health screening with external link (present study; online)	12,600	1283	9.82
Mental health screening with internal page link (present study; online)	920	610	1.51
Prototypes screening survey (postal survey; Christensen et al., 2011)	34,100	2976	11.46
Generalized anxiety disorder trial screening survey (postal survey; Christensen et al., 2010)	261,300	12329	21.19
Generalized anxiety disorder stigma survey (postal survey; Griffiths et al., 2011)	8800	618	14.24