Group CBT for Paternal Perinatal Depression RCT

The Edinburgh Postnatal Depression Scale (EPDS) is a 10-item gold standard measure of PND. Total scores range from 0-30 with higher scores indicating worse depressive symptoms. A score of ≥10 is consistent with possible PND, ≥13 is consistent with probable PND and changes in scores >4 are accepted as being indicative of clinically significant change.

The Edinburgh Postnatal Depression Scale (EPDS) is a 10-item gold standard measure of PND. Total scores range from 0-30 with higher scores indicating worse depressive symptoms. A score of ≥10 is consistent with possible PND, ≥13 is consistent with probable PND and changes in scores >4 are accepted as being indicative of clinically significant change.

We will compare DSM-5-defined current major depressive disorder (MDD) using the Diagnostic Assessment Research Tool (DART), a structured diagnostic interview.

We will compare DSM-5-defined current major depressive disorder (MDD) using the Diagnostic Assessment Research Tool (DART), a structured diagnostic interview.

The Generalized Anxiety Disorder 7-Item Scale (GAD-7) will be used to assess anxiety symptoms. The GAD-7 is a 7-item self-report scale that assesses the symptoms of generalized anxiety disorder, the most common comorbidity of PND. Items are scored on a 0-3 point scale with total scores ranging from 0-21. Higher scores indicate more severe anxiety symptoms.

The Generalized Anxiety Disorder 7-Item Scale (GAD-7) will be used to assess anxiety symptoms. The GAD-7 is a 7-item self-report scale that assesses the symptoms of generalized anxiety disorder, the most common comorbidity of PND. Items are scored on a 0-3 point scale with total scores ranging from 0-21. Higher scores indicate more severe anxiety symptoms.

A 36-item self-report measure of parenting stress. Items are scored on a 1-5 point scale with total scores ranging from 36-180. Higher scores indicate greater parenting stress.

A 36-item self-report measure of parenting stress. Items are scored on a 1-5 point scale with total scores ranging from 36-180. Higher scores indicate greater parenting stress.

A 32-item self-report measure assessing partner relationship quality. Items are rated on a 5-, 6-, or 7-point scale or yes/no response. Total scores range from 0-151, with higher scores indicating better relationship adjustment and quality.

A 32-item self-report measure assessing partner relationship quality. Items are rated on a 5-, 6-, or 7-point scale or yes/no response. Total scores range from 0-151, with higher scores indicating better relationship adjustment and quality.

A 25-item self-report measure; each item is scored on a 0-5-point scale. Total scores range from 0-125 with higher scores indicating greater impairment in bonding. Subscales include: Impaired Boding, Rejection and Anger, Infant-Focused Anxiety, Risk of Abuse.

A 25-item self-report measure; each item is scored on a 0-5-point scale. Total scores range from 0-125 with higher scores indicating greater impairment in bonding. Subscales include: Impaired Boding, Rejection and Anger, Infant-Focused Anxiety, Risk of Abuse.

A 37 self-report measure. Each item is scored on a 7-point likert scale, with 'does not apply' option available. Mean scores of items responded to are generated for each subscale. Higher scores indicate higher levels of the measured temperament trait. Subscales assessed include Positive Affectivity/Surgency, Negative Emotionality, Orienting/Regulatory Capacity.

A 37 self-report measure. Each item is scored on a 7-point likert scale, with 'does not apply' option available. Mean scores of items responded to are generated for each subscale. Higher scores indicate higher levels of the measured temperament trait. Subscales assessed include Positive Affectivity/Surgency, Negative Emotionality, Orienting/Regulatory Capacity.

A 9-item self-report measure assessing depression symptoms. Each item is scored on a 0-3-point scale with total scores ranging from 0-27. Higher scores indicate more severe depressive symptoms.

A 9-item self-report measure assessing depression symptoms. Each item is scored on a 0-3-point scale with total scores ranging from 0-27. Higher scores indicate more severe depressive symptoms.

To inform cost-effectiveness analysis, healthcare resource utilization data will be collected using a questionnaire used in prior work and adapted for the postpartum period (based on the Canadian Community Health Survey and Service Use and Resources Form). Participants will provide information on all healthcare service and medication use over the trial period.

To inform cost-effectiveness analysis, healthcare resource utilization data will be collected using a questionnaire used in prior work and adapted for the postpartum period (based on the Canadian Community Health Survey and Service Use and Resources Form). Participants will provide information on all healthcare service and medication use over the trial period.

To inform cost-effectiveness analysis, the EQ-5D-5L will be collected. This is a utility-based health-related quality of life instrument assessing five domains (mobility, self-care, usual activities, pain, depression/anxiety) and will be administered at T1-T3. We will use its Canadian algorithm to convert responses to health utility. QALYs will be calculated by multiplying the health utility for the corresponding time period (i.e., area under the curve approach).

To inform cost-effectiveness analysis, the EQ-5D-5L will be collected. This is a utility-based health-related quality of life instrument assessing five domains (mobility, self-care, usual activities, pain, depression/anxiety) and will be administered at T1-T3. We will use its Canadian algorithm to convert responses to health utility. QALYs will be calculated by multiplying the health utility for the corresponding time period (i.e., area under the curve approach).

Intervention participants only. We will assess participant satisfaction with the intervention using the eight-item Client Satisfaction Questionnaire (CSQ-8). The CSQ-8 consists of eight items assessing the level of satisfaction with the intervention on a 4-point Likert-type scale, as well as one open-ended question. Responses to the open-ended question will be analyzed using content analysis to inform acceptability of the intervention.