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Table 3 Inclusion and exclusion criteria

From: A systematic review of the relationship between severe maternal morbidity and post-traumatic stress disorder

Topic Inclusion criteria Exclusion criteria
Research focus · The relationship between severe maternal morbidity that occurred during pregnancy until the end of the first week postpartum and the onset of PTSD/PTSD symptoms within 2 years postpartum · Studies of PTSD/PTSD symptoms associated with miscarriage and abortion
   · Studies of PTSD/PTSD symptoms associated with medical procedure or medical intervention per se (e.g. caesarean section) without including severe maternal morbidity as a predictor of PTSD/PTSD symptoms
   · Other postnatal psychological and physical problems
   · Studies of PTSD/PTSD symptoms in pregnant women not associated with pregnancy related events but with others such as conflict, accidents or natural disasters
   · Studies examining the effects of pre-existing PTSD/PTSD symptoms on future pregnancies
Population · Women who experienced (severe) maternal morbidity (eg. Major obstetric haemorrhage, pre-eclampsia/eclampsia, HELLP syndrome, admission to intensive/special care unit) Childbearing women in general (of whom, women who experienced severe maternal morbidity not distinguishable)
Setting/countries · No restriction made · None
Study type/design · Observational studies · Descriptive studies with no comparison group
  · Experimental studies with relevant data · Qualitative studies
  · Systematic reviews which examined the relationship between severe maternal morbidity and subsequent postnatal PTSD/PTSD symptoms · Letter, commentary, news or short communications
   · Repeated findings originated from same study
Language · English · Non-English
Publication · Published and grey literature · None
Time frame · Studies published from 1970 · Studies published before 1970