Objective
This review aims to identify non‐medical interventions that may reduce the fear of childbirth, directly or indirectly (through its factors).
Methods
This review followed the PRISMA guidance and a rigorous protocol that was registered in PROSPERO. Searches were done in ProQuest, the International Clinical Trials Registry Platform, and Google Scholar. All RCTs published in the last 5 years, in English or Spanish, regarding women with a low‐risk pregnancy and without mental disorders were included.
Results
From 5147 articles found, only 69 were full‐text assessed. Finally, 18 studies were included suggesting that prenatal education, psychoeducation, and counseling might be effective, whereas cognitive‐behavioral therapy and some alternative therapies require more research. The results of relaxation techniques were contradictory. Results also suggest that social support and exposure (through education) might have an important role in the efficacy of interventions.
Conclusions
More appropriately randomized and blinded trials are necessary that use a prespecified definition of fear of childbirth and comprehensive measurement tools specific for pregnant women.
The genus Liolaemus includes 268 species, classified in two subgenera, Eulaemus and Liolaemus sensu stricto. The latter is formed by 12 monophyletic groups; one of them being the Liolaemus elongatus group, distributed in South America. We studied the biogeographic history of the L. elongatus group. We obtained a phylogenetic hypothesis recovering five main clades: the L. punmahuida, L. elongatus sensu stricto, L. kriegi, L. petrophilus and L. capillitas clades. Based on that hypothesis we obtained a time calibrated tree. The ancestral ranges were estimated applying three methodologies: DEC, DEC+j (using predefined areas) and GEM (using explicit geographical data). Our results show that the ancestral area of the L. elongatus group was located in central Argentina, and its divergence began around 11.5 Mya. From here, a combination of events (founder events and/or vicariances) led the species to their current distribution. Despite their differences, DEC+j and GEM show congruent results.
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