Table 1.

Overview of domains and psychometric scales included in the three questionnaires, showing the number of questions within the specific scales at specific times

Scales	Questionnaire 1	Questionnaire 2	Questionnaire 3
Time since the loss	24–60 days	7 months	13 months
Sociodemographic and obstetric variables	22
The Inventory of Daily Widowed Life (IDWL) Caserta and Lund53 2007	15	15	15
The Two Track Bereavement Questionnaire on Life Following Loss (TTBQ) Rubin et al 55 2009	60	60	60
The Experience in Close Relationships Scale–revised, short form (ECR-R) Fraley et al 50 2011	12
Selected questions from  The European Value Survey Survey57 2006	23		23
Prolonged Grief Disorder (PG-13)56	13	13	13
Post Traumatic Stress Disorder Checklist (PCL-PTSD) Blevins et al 54 2015	17	17	17
Perinatal Grief Scale (PGS), Toedter et al 13 1988	33	33	33
Total no of questions	195	138	161