Understanding Daily Changes in BDD Risk Using Smartphones

Smartphone-based Digital Phenotyping to Detect High-risk Affect States in Body Dysmorphic Disorder (BDD)

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04254575

Enrollment

Registered

2020-02-05

Start date

2020-07-15

Completion date

2023-04-28

Last updated

2023-09-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Body Dysmorphic Disorders

Brief summary

Body dysmorphic disorder (BDD) is associated with high risk for suicide attempts (22-28%) and substance use disorders (49%), underscoring the importance of accurate, real-time risk detection in BDD. This study aims to use smartphone-based digital phenotyping to develop and validate unobtrusive, time-sensitive, and ecologically valid measures of key risk factors for suicide and substance misuse in BDD: negative affect states. As next steps, this research can be extended to detect risk transdiagnostically, with the goal of enabling just-in-time interventions to target suicide and substance misuse across psychiatric illnesses.

Interventions

OTHERNone, observational study only (no interventions)

None, observational study only (no interventions)

Study design

Observational model

CASE_ONLY

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Adults age \>=18 * Current primary diagnosis of BDD * BDD severity \>= moderate * Living in US * English proficiency * Owns an Android or iOS (Apple) smartphone * Has regular Wifi-enabled internet access for data downloads

Design outcomes

Primary

Measure	Time frame	Description
Self-reported anxiety intensity, rated from 1 (very slightly or not at all) to 5 (extremely)	3 months	Ecological momentary assessment (EMA) of anxiety intensity, where higher scores indicated more severe anxiety.
Self-reported shame intensity, based on Positive and negative affect scale (PANAS) shame item, rated from 1 (very slightly or not at all) to 5 (extremely)	3 months	Ecological momentary assessment (EMA) of shame intensity, where higher scores indicate more severe shame.
Self-reported negative affect intensity, based on Positive and negative affect scale (PANAS) negative affect items (averaged), rated from 1 (very slightly or not at all) to 5 (extremely)	3 months	Ecological momentary assessment (EMA)-rated general negative affect intensity, where higher scores indicate more severe negative affect.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026