ArticleFrontiers in psychiatry2026
PROMATER: protocol for a randomized controlled trial of a digital self-guided intervention to promote perinatal mental health and reduce self-criticism.
Article in Frontiers in psychiatry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Perinatal mental health represents a significant public health concern given the high prevalence of mental disorders during pregnancy and the postpartum period and their impact on maternal well-being, mother-infant bonding, and child development. Emerging evidence identifies self-criticism as a transdiagnostic vulnerability factor associated with psychological distress in this period, while self-compassion has been recognized as an important protective factor. In Brazil, access to preventive perinatal mental health interventions remains limited. This paper describes the protocol of a randomized controlled trial (RCT) evaluating PROMATER - an online program designed to promote perinatal mental health by targeting self-criticism and self-compassion. Methods: A total of 130 pregnant women between 28 and 34 weeks of gestation will enroll in a two-arm RCT with a dismantling design. Participants will be randomized (1:1 ratio) to either the PROMATER intervention or to an active control group. Participants and data analysts will be blinded to group allocation. PROMATER consists of a 3-week program (6 modules) addressing maternal expectations, self-criticism, perinatal mental health, social support, self-compassion, and mindfulness and mother-infant bonding. The active control offers a structurally equivalent program covering the same topics, except for the modules specifically targeting these transdiagnostic processes. Primary outcomes are self-compassion, assessed via the compassionate self-responding (CSR) score of the Self-Compassion Scale, and self-criticism, operationalized through the uncompassionate self-responding (USR) score. Secondary outcomes include postpartum depression, anxiety, quality of life, social support, and mother-infant bonding. Assessments occur at baseline (T1), post-intervention (T2), and 3-month postpartum follow-up (T3). Data will be analyzed using Linear Mixed Models (LMM) following the Intention-to-Treat (ITT) principle. Discussion: Evaluating the effectiveness of a brief, accessible, online intervention has the potential to address the need for an evidence-based approach designed to promote maternal well-being during pregnancy and the postpartum period. The intervention is designed to maximize reach and minimize cost, with the potential to scale up and incorporate in routine perinatal care. The active control condition will allow examination of whether directly targeting self-criticism and self-compassion confers incremental benefit over structured perinatal psychoeducation alone. Systematic review registration: https://ensaiosclinicos.gov.br/, identifier RBR-99tjfz5.
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