Table 1.

Data extraction of each study

First author and year	Recruitment	MH condition	N (originally)	Age group	Outcome measures	Intervention and number of modules/time	Supervision	Contact	Randomization	Blinding	Control group	Follow-up	Measure ment time	Dropout	Country
Wang et al. (2013)	Community, university and hospital counseling center	PTSD	197	18–70 year-old	PDS, SCL-D, PCC, SFI, CSE	My Trauma Recovery website (social cognitive); 6 modules; 1 month	None, except for technical difficulties in accessing the website	Phone call for recruitment and technical support	Yes	No	Wait list	3 months	Pre-test, post-test, follow-up	38.6%	China
Mogoaşe et al. (2013)	University student	Depressive symptoms	42	Mean: 22.87 year-old	PEQ, AMT, BDI-II, RRS, GE	Concreteness training delivered via e-mail; 7 modules; 7 days	Researcher, only to remind the participants via email if they do not finish their daily assignment	Entirely online (e-mail)	Yes	No	Wait list	None	Pre-test and post-test	2%	Romania
Su et al. (2011)	University student	Internet addiction	65	Mean: 22.3 year-old (18–28 year-old)	YDQ, Online hours per week, online satisfaction	Healthy online self-helping center cognitive-behavioral therapy (CBT): 4 modules; 1 day	None	Interview for screening; Feedback via website; sms for follow-up reminder	Yes	No	Wait list	None	Pre-test and post-test (mentioned as follow-up 1 month in the article)	9%	China

PTSD, post-traumatic stress disorder; PDS, post-traumatic diagnostic scale; SCL-D, symptom checklist 90-depression; PCC, post-traumatic cognitive changes; SFI, social, functioning impairment; CSE, trauma coping self-efficacy scale; PEQ, problem elaboration questionnaire; AMT, autobiographical memory test; BDI-II, beck depression inventory-II; RRS, rumination response scale; GE, global evaluation/self-drowning; YDQ, young's diagnostic questionnaire .