Age

18–65

Sex

ALL

Healthy volunteers

Not accepted

1. Adult male and female aged between 18-65 years old;
2. A diagnosis of PTSD or subthreshold PTSD (PTSD Symptom Scale, Interview Version for DSM-5, PSSI-5);
3. If currently taking psychotropic medication, taking a stable one for at least 4 weeks;
4. A smartphone owner and no obstacle to the Now Meditation App;
5. Scoring 12 or more on Insomnia Severity Index (ISI; the symptoms appear after the diagnosis of full/subthreshold PTSD).

1. A diagnosis of bipolar disorder or psychotic disorder;
2. Current substance dependence;
3. Evidence of a moderate or severe traumatic brain injury (as determined by the obstacle to comprehending the baseline screening questionnaires);
4. Serious suicidal ideation (as determined by the Scale for Suicidal Ideation);
5. Other psychiatric disorders severe enough to warrant designation as the primary disorder;
6. Taking psychotherapy for PTSD currently.

Written Exposure Therapy and App-Delivered Mindfulness Meditation for PTSD in China: A Pilot Study