CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 82 enrolled
Drug / intervention
PARTS Program +1 morebehavioral
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05095428
NCT05095428N/ACompleted

The PARTS Study: A Pilot Randomized Controlled Trial of the PARTS Intensive IFS Program vs. a Nature-based Stress Reduction Program for PTSD in a Community Mental Health Clinic

Cambridge Health Alliance·interventional·Posted Oct 27, 2021·Updated Jul 3, 2025

In Brief

A clinical study evaluating PARTS Program and NBSR-T Program for Post-traumatic Stress Disorder. Completed, enrolled 82 participants across 1 site.

Detailed Summary

This pilot RCT will test the preliminary efficacy of an intensive group model of Internal Family Systems (IFS) called the Program for Alleviating and Resolving Trauma and Stress (PARTS) compared with a Nature-Based Stress Reduction for Trauma Survivors (NBSR-T) attention placebo control group at reducing PTSD symptom severity measured by Clinician-Administered PTSD Scale (CAPS-5). In addition, the effects of the interventions on self-reported PTSD symptoms, disassociation, and disturbances of self-organization (DSO), as well as mechanisms of emotion regulation, decentering and self-compassion will be secondary outcomes.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

N/ACompletedFinished
20222023202420252026
First PostedOct 27, 2021
Enrollment StartApr 28, 2022
Primary CompletionSep 12, 2023
Study CompletionNov 8, 2023
TodayJul 2, 2026
Enrollment to primary: 1.4 yearsPosted 4.7 years ago

Interventions

PARTS Programbehavioral

The PARTS Program is a 16-week group intervention model of Internal Family Systems (IFS), with 8 individual IFS clinical sessions on a biweekly basis, developed to resolve and alleviate trauma and stress for individuals diagnosed with PTSD.

NBSR-T Programbehavioral

The NBSR-T Program is a 16-week nature-based group intervention model, with 8 individual non-IFS clinical sessions on a biweekly basis, developed as an attention placebo control for individuals diagnosed with PTSD.