This study examined the construct validity of the Dutch Life Orientation Test-Revised (LOT-R)
in two samples; one sample of patients with psychiatric disorders (n= 157) and one sample …

… Therefore, we calculated the standardized pre to post change score of both the experimental
group (d E ) and the control group (d C ). Then we calculated their difference, ie, Δ(d)=d E −…

… We searched the following electronic databases MEDLINE, EMBASE and PsycINFO from
1966 forward to September 2002 and the Cochrane Controlled Trials Register. The search …

… STEPHANIE NIKOLAUS,1 CHRISTINA BODE,1 ERIK TAAL,1 … E-mail: s.nikolaus@
utwente.nl. … Complementary to the electronic search, the reference lists of all 129 …

… Improving the Quality of Web Surveys: The Checklist for Reporting Results of Internet E-Surveys
(CHERRIES). J Med Internet Res 2004;6(3):e34. DOI: https:… Erik Taal PhD … Erik Taal PhD …

Ever since the rise of online support groups it has been presumed that there is an empowering
effect from patients' participating in these groups, despite a lack of evidence to back up …

OBJECTIVE: Although much has been expected of the empowering effect of taking part in
online patient support groups, there is no direct evidence thus far for the effects of participation …

… Health related virtual communities and electronic support groups: systematic review of the
effects of online peer to peer interactions. BMJ 2004 May 15;328(7449):1166 [FREE Full text] […

The Patient Perspective Workshop at OMERACT 7 addressed the question of assessing the
outcomes of intervention in rheumatoid arthritis (RA) from the perspective of those who …

… The eHEALS is an 8-item scale that tends to measure perceived skills at finding, evaluating,
and applying electronic health information to health problems [28]. The instrument proved to …