Bibliometric analysis of published articles on perinatal anxiety from 1920 to 2020

Introduction: Trends and gaps in perinatal anxiety research remain unknown. The objective of this bibliometric review was to analyze the characteristics and trends in published research on perinatal anxiety to inform future research. Methods: All published literature in Web of Science on perinatal anxiety from January 1, 1920 to December 31, 2020 were screened by two reviewers. VOSViewer was utilized to visualize linkages between publications. Bibliometric data were extracted from abstracts. Results: The search strategy identified 4561 publications. After screening, 2203 publications related to perinatal anxiety were used for the visualization analysis. For the bibliometric data, 1534 publications had perinatal anxiety as a primary focus. There were 7910 different authors, over half named only once (55.5 %), from 63 countries. 495 journals were identified, with over half (56.0 %) publishing only one article. Most articles were published between 2011 and 2020 (75.9 %). In terms of perinatal timing, over half (54.2 %) published on antenatal anxiety. Only 6.0 % of studies reported on perinatal anxiety in fathers and 56.5 % also reported on perinatal depression. Limitations: Web of Science was solely used, and manual screening of each publication was required. Conclusion: This bibliometric analysis found: (1) perinatal anxiety is a growing field of research, with publications increasing over time; (2) there is variation in authors and journals; (3) over half of the publications focus on antenatal anxiety; (4) paternal anxiety is understudied; and (5) only 6 % of publications came from low and lower-middle income countries. Gaps related to maternal postnatal anxiety and paternal perinatal anxiety exist.