Maternal unwanted and intrusive thoughts of infant-related harm, obsessive-compulsive disorder and depression in the perinatal period: study protocol
Bibliographic record
Abstract
BACKGROUND: Unwanted, intrusive thoughts of harm-related to the infant are reported by the vast majority of new mothers, with half of all new mothers reporting unwanted, intrusive thoughts of harming their infant on purpose. Thoughts of intentional harm, in particular, are distressing to women, their partners and the people who care for them. While maternal, unwanted and intrusive thoughts of infant-related harm are known to be associated with obsessive compulsive disorder (OCD) and depression, preliminary evidence suggests that they are not associated with an increased risk of harm to infants. Perinatal care providers and policy makers, as well as new mothers and their partners require evidence-based information in order to respond appropriately to these types of thoughts. The purpose of this research is to address important gaps regarding the (a) prevalence and characteristics of intrusive, unwanted thoughts of baby-related harm, (b) their association (or lack thereof) with child abuse, and (c) the prevalence and course of obsessive-compulsive disorder and depression in the perinatal period. METHODS: Participant were 763 English-speaking women and recruited during pregnancy. In this province-wide study in British Columbia, participants were recruited proportionally from hospitals, city centers and rural communities between January 23, 2014 and September 09, 2016. Participants were administered online questionnaires and diagnostic interviews over the phone at 33-weeks gestation, 7-weeks postpartum and 4-months postpartum. The study assessed intrusive and unwanted thoughts of harm related to the infant, obsessive-compulsive disorder (OCD) and major depressive episode (MDE) disorders and symptomatology, sleep, medical outcomes, parenting attitudes, and infant abuse. DISCUSSION: There is a scarcity of literature concerning maternal unwanted, intrusive, postpartum thoughts of infant-related harm and their relationship to child harming behaviors, OCD and depression. This longitudinal cohort study was designed to build on the existing research base to ensure that policy developers, child protection workers and health-care providers have the guidance they need to respond appropriately to the disclosure of infant-related harm thoughts. Thus, its main goals will be to investigate whether intrusive postpartum thoughts of infant-related harm are a risk factor for child abuse or the development of OCD.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.015 | 0.013 |
| Meta-epidemiology (narrow) | 0.003 | 0.005 |
| Meta-epidemiology (broad) | 0.006 | 0.003 |
| Bibliometrics | 0.004 | 0.004 |
| Science and technology studies | 0.005 | 0.002 |
| Scholarly communication | 0.003 | 0.003 |
| Open science | 0.004 | 0.002 |
| Research integrity | 0.004 | 0.005 |
| Insufficient payload (model declined to judge) | 0.039 | 0.009 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".