Supportive text messaging for depression and comorbid alcohol use disorder: single-blind randomised trial

Area of Science:

• Psychiatry
• Digital Health
• Addiction Medicine

Background:

• Co-occurring depression and Alcohol Use Disorder (AUD) present significant treatment challenges.
• Mobile phone text messaging offers a scalable and accessible intervention modality.
• Previous research suggests potential for digital interventions in managing comorbid conditions.

Purpose of the Study:

• To evaluate the efficacy of supportive text messages in improving mood and abstinence in patients with depression and AUD.
• To conduct a randomized, rater-blinded trial to assess intervention effects.
• To explore the impact of digital communication on dual diagnosis patient outcomes.

Main Methods:

• A randomized trial involving 54 participants diagnosed with unipolar depression and AUD post-inpatient treatment.
• Intervention group received twice-daily supportive texts; control group received infrequent thank you texts for three months.
• Primary outcomes measured were Beck Depression Inventory (BDI-II) scores and Cumulative Abstinence Duration (CAD).

Main Results:

• A statistically significant reduction in BDI-II scores was observed in the text message group compared to the control group (p=0.003).
• The intervention group showed a mean BDI-II score decrease of -7.9, indicating a large effect size (Cohen's d=0.85).
• A trend towards greater Cumulative Abstinence Duration (CAD) was noted in the intervention group (p=0.08).

Conclusions:

• Supportive text messages demonstrate potential as an effective intervention for improving depressive symptoms in patients with comorbid AUD.
• The findings suggest that digital interventions can positively impact mental health and substance use outcomes.
• Further research with larger sample sizes and longer follow-up is warranted to confirm long-term efficacy.