Table 1 Data collection plan
Type of measure | Measures | Timepoint collected | Type of data |
|---|---|---|---|
Feasibility | Recruitment, attendance, retention and withdrawal rates, study completion | Throughout intervention period | Feasibility |
Semi-structured interviews with a sub sample of 20–30 women and intervention deliverers to understand intervention uptake, acceptance, and acceptability | Week 6 | ||
Mental health: screening tool for PND | Edinburgh Postnatal Depression Scale (EPDS) (33) | Baseline, weeks 3, 6, 16, 32 | Quantitative |
Demographic information | Demographics interview, Childhood Experience of Care and Abuse-Questionnaire (CECA-Q) (34), Brief Life Events Scale (35), Intrusive Life Events Scale, Composite Abuse Scale (CAS) (36) | Baseline | |
Mental health: depression, anxiety, wellbeing, stress | Structured Clinical Interview for DSM-IV Disorders (SCID-IV) (37) | Baseline | |
Hamilton Depression Rating Scale (HDRS) (38) | Baseline, week 6 | ||
Beck Depression Inventory (BDI) (39), State Trait Anxiety Inventory (STAI) (40), Perceived Stress Scale (PSS) (41), Office for National Statistics Wellbeing Scale (ONS) (42) | Baseline, weeks 3, 6, 16, 32 | ||
Social: mother-infant relationship | Maternal Postpartum Attachment Scale (MPAS) (43), Parental Reflective Functioning Questionnaire (PRFQ) (44) | Baseline, weeks 3, 6, 16, 32 | |
Crittenden CARE-Index (CCI) (45) | Baseline, weeks 6, 32 | ||
Social: loneliness and social support | UCLA Loneliness Scale (46), Short General Self-Efficacy Scale (GSE-6) (47), Multidimensional Scale of Perceived Social Support (MSPSS) (48) | Baseline, weeks 3, 6, 16, 32 | |
Biological markers | Diurnal cortisol saliva samples | Baseline, week 6 | |
Pre- and post-session saliva samples | Singing sessions 1, 6 | ||
Qualitative interview | Semi-structured interviews with a sub sample of 20–30 women and intervention deliverers for clinical mechanisms of effect | After week 6 | Qualitative |