Table 1

Participant inclusion and exclusion criteria

Inclusion criteria Exclusion criteria
Women who are 18 years old or olderCurrent diagnosis of depression or other mood disorder made by a health professional
Up to 14 weeks pregnant (assessed through a dating ultrasound scan)Currently receiving treatment for depression or other mood disorder (whether it is talking therapies or pharmacological treatment)
Any parityRecent personal history of depression or other mood disorder in the past 12 months
Attending antenatal clinics in participating National Health Service sitesNot comfortable reading and writing in English
Own smartphone (either an iPhone or any type of Android handset)Not owning a smartphone, or owning an incompatible handset (ie, Windows Phone, Blackberry or Linux)