%0 Journal Article
%@ 2291-5222
%I JMIR Publications
%V 12
%N 
%P e63316
%T Efficacy of the mHealth App Intellect in Improving Subclinical Obsessive-Compulsive Disorder in University Students: Randomized Controlled Trial With a 4-Week Follow-Up
%A Lee Yoon Li,Madeline
%A Lee Si Min,Stephanie
%A Sündermann,Oliver
%+ National University of Singapore, 9 Arts Link, #13-02, Singapore, 117570, Singapore, 65 80435120 ext 5120, psymos@nus.edu.sg
%K mobile health app
%K self-guided interventions
%K obsessive-compulsive disorder
%K cognitive behavioral therapy
%K maladaptive perfectionism
%K randomized controlled trial
%K behavioral
%K efficacy
%K mHealth app
%K university students
%K Singapore
%K symptoms
%D 2024
%7 16.12.2024
%9 Original Paper
%J JMIR Mhealth Uhealth
%G English
%X Background: Obsessive-compulsive disorder (OCD) is the third most prevalent mental health disorder in Singapore, with a high degree of burden and large treatment gaps. Self-guided programs on mobile apps are accessible and affordable interventions, with the potential to address subclinical OCD before symptoms escalate. Objective: This randomized controlled trial aimed to examine the efficacy of a self-guided OCD program on the mobile health (mHealth) app Intellect in improving subclinical OCD and maladaptive perfectionism (MP) as a potential moderator of this predicted relationship. Methods: University students (N=225) were randomly assigned to an 8-day, self-guided app program on OCD (intervention group) or cooperation (active control). Self-reported measures were obtained at baseline, after the program, and at a 4-week follow-up. The primary outcome measure was OCD symptom severity (Obsessive Compulsive Inventory–Revised [OCI-R]). Baseline MP was assessed as a potential moderator. Depression, anxiety, and stress (Depression Anxiety and Stress Scales-21) were controlled for during statistical analyses. Results: The final sample included 192 participants. The intervention group reported significantly lower OCI-R scores compared with the active control group after the intervention (partial eta-squared [ηp2]=0.031; P=.02) and at 4-week follow-up (ηp2=0.021; P=.044). A significant, weak positive correlation was found between MP and OCI-R levels at baseline (r=0.28; P<.001). MP was not found to moderate the relationship between condition and OCI-R scores at postintervention (P=.70) and at 4-week follow-up (P=.88). Conclusions: This study provides evidence that the self-guided OCD program on the Intellect app is effective in reducing subclinical OCD among university students in Singapore. Future studies should include longer follow-up durations and study MP as a moderator in a broader spectrum of OCD symptom severity. Trial Registration: ClinicalTrials.gov NCT06202677; https://clinicaltrials.gov/study/NCT06202677 
%R 10.2196/63316
%U https://mhealth.jmir.org/2024/1/e63316
%U https://doi.org/10.2196/63316