Table 1.

Inclusion and exclusion criteria

Criteria	Inclusion criteria	Exclusion criteria
Population	Adolescents and adult mothers* who had given birth in the previous 12 months and were not depressed at baseline.	Other populations.
Intervention	Psychological, psychoeducational and psychosocial interventions.	Any other type of intervention such as a pharmacological intervention, acupuncture, aromatherapy or a similar intervention.
Comparator	No intervention, usual care, waiting list and attention control.	Any type of intervention with available evidence of its effectiveness in preventing depression.
Outcome	Prevention of postpartum depression (incidence and/or reduction of symptoms).	Different outcomes or trials in which the effects on postpartum depression and other diseases are provided together.
Study design	Randomised controlled trials.	Other designs.
Language	All languages.	None.
Setting	All settings.	None.

*Pregnant females will be included when the study reports a measure of depression after delivery.