Masako Hayashi

534 total citations
17 papers, 391 citations indexed

About

Masako Hayashi is a scholar working on Pediatrics, Perinatology and Child Health, Public Health, Environmental and Occupational Health and Obstetrics and Gynecology. According to data from OpenAlex, Masako Hayashi has authored 17 papers receiving a total of 391 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Pediatrics, Perinatology and Child Health, 7 papers in Public Health, Environmental and Occupational Health and 6 papers in Obstetrics and Gynecology. Recurrent topics in Masako Hayashi's work include Ectopic Pregnancy Diagnosis and Management (4 papers), Maternal and Perinatal Health Interventions (4 papers) and Assisted Reproductive Technology and Twin Pregnancy (4 papers). Masako Hayashi is often cited by papers focused on Ectopic Pregnancy Diagnosis and Management (4 papers), Maternal and Perinatal Health Interventions (4 papers) and Assisted Reproductive Technology and Twin Pregnancy (4 papers). Masako Hayashi collaborates with scholars based in Japan and United States. Masako Hayashi's co-authors include Akihito Nakai, Yoshio Matsuda, Shoji Satoh, Toshiyuki Takeshita, Atsuko Sekiguchi, Ikuno Kawabata, Shigeki Matsubara, Masaki Ogawa, Shoji Sato and Satoru Yamaguchi and has published in prestigious journals such as Fertility and Sterility, International Journal of Gynecology & Obstetrics and European Journal of Obstetrics & Gynecology and Reproductive Biology.

In The Last Decade

Masako Hayashi

16 papers receiving 374 citations

Peers

Countries citing papers authored by Masako Hayashi

Since Specialization

Citations

This map shows the geographic impact of Masako Hayashi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Masako Hayashi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masako Hayashi more than expected).

Fields of papers citing papers by Masako Hayashi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masako Hayashi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Masako Hayashi. The network helps show where Masako Hayashi may publish in the future.

Co-authorship network of co-authors of Masako Hayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Masako Hayashi. A scholar is included among the top collaborators of Masako Hayashi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Masako Hayashi. Masako Hayashi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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17 of 17 papers shown

#	Work	Indexed citations
1	Access to medical abortion and abortion care in Japan 2025 ·Preventive Medicine Reports ·Aya Goto, Veronika J. Wirtz, Masako Hayashi, Junichi Hasegawa, Kotaro Fukushima, Hideo Matsuda, Akihito Nakai	0
2	Uterine contraction may not be an independent risk factor for spontaneous preterm birth before 35 weeks in women with cervical shortening 2022 ·International Journal of Gynecology & Obstetrics ·(unknown), Kayo Takahashi, Makiko Mieno, (unknown), Hiroaki Aoki, Takeshi Nagamatsu, (unknown), Hironobu Hyodo, (unknown), Masako Hayashi, Akihito Nakai, Noriko Yoneda, Shigeru Saito, Yoshio Matsuda, Shigeki Matsubara, Akihide Ohkuchi	1
3	Role of Collagen Gel Droplet-Embedded Culture-Drug Sensitivity Testing (CD-DST) for Assessing the Sensitivity of Gastric Cancer to Chemotherapy Drugs Combined with Other Cancer Therapeutic Drugs 2022 ·Journal of Nippon Medical School ·Hiroshi Makino, Satoshi Nomura, (unknown), (unknown), Masako Hayashi, Hiroshi Yoshida	2
4	Effects of prophylactic vaginal progesterone administration on mild cervical shortening (TROPICAL study): a multicenter, double-blind, randomized trial 2021 ·The Journal of Maternal-Fetal & Neonatal Medicine ·Masako Hayashi, (unknown), Katsufumi Otsuki, Noriko Yoneda, Takeshi Nagamatsu, (unknown), Kei Miyakoshi, Hiroaki Aoki, Kei Tanaka, (unknown), Akihide Ohkuchi, Yoshio Matsuda, Akihito Nakai	3
5	Cervical Dilatation Curves of Spontaneous Deliveries in Pregnant Japanese Females 2018 ·International Journal of Medical Sciences ·(unknown), Akihito Nakai, Atsuko Sekiguchi, Masako Hayashi, Toshiyuki Takeshita	12
6	Impact of the Great East Japan Earthquake and Fukushima Nuclear Power Plant Accident on Assisted Reproductive Technology in Fukushima Prefecture: The Fukushima Health Management Survey 2017 ·Journal of Clinical Medicine Research ·Masako Hayashi, Keiya Fujimori, Seiji Yasumura, Akihito Nakai, (unknown)	4
7	Standard curves of placental weight and fetal/placental weight ratio in Japanese population: difference according to the delivery mode, fetal sex, or maternal parity 2016 ·European Journal of Obstetrics & Gynecology and Reproductive Biology ·Masaki Ogawa, Yoshio Matsuda, Akihito Nakai, Masako Hayashi, Shoji Sato, Shigeki Matsubara	39
8	Obstetric Outcomes in Women in Fukushima Prefecture during and after the Great East Japan Earthquake and Fukushima Nuclear Power Plant Accident: The Fukushima Health Management Survey 2016 ·Open Journal of Obstetrics and Gynecology ·Masako Hayashi, Keiya Fujimori, Seiji Yasumura, Aya Goto, Akihito Nakai	10
9	Fetal/Placental Weight Ratio in Term Japanese Pregnancy: Its Difference Among Gender, Parity, and Infant Growth 2015 ·International Journal of Medical Sciences ·Yoshio Matsuda, Masaki Ogawa, Akihito Nakai, Masako Hayashi, Shoji Satoh, Shigeki Matsubara	24
10	Three-month lower-dose flecainide after catheter ablation of atrial fibrillation 2014 ·EP Europace ·Masako Hayashi, Yasushi Miyauchi, (unknown), Kenji Yodogawa, Ippei Tsuboi, (unknown), Hiroshi Hayashi, Kazushi Takahashi, Wataru Shimizu	14
11	The Effect of Single Embryo Transfer on Perinatal Outcomes in Japan 2014 ·International Journal of Medical Sciences ·Masako Hayashi, Shoji Satoh, Yoshio Matsuda, Akihito Nakai	9
12	Type and Location of Placenta Previa Affect Preterm Delivery Risk Related to Antepartum Hemorrhage 2013 ·International Journal of Medical Sciences ·Atsuko Sekiguchi, Akihito Nakai, Ikuno Kawabata, Masako Hayashi, Toshiyuki Takeshita	52
13	Adverse obstetric and perinatal outcomes of singleton pregnancies may be related to maternal factors associated with infertility rather than the type of assisted reproductive technology procedure used 2012 ·Fertility and Sterility ·Masako Hayashi, Akihito Nakai, Shoji Satoh, Yoshio Matsuda	168
14	Fetal Heart Rate Classification Proposed by the Perinatology Committee of the Japan Society of Obstetrics and Gynecology: Reproducibility and Clinical Usefulness 2012 ·Journal of Nippon Medical School ·Masako Hayashi, Akihito Nakai, Atsuko Sekiguchi, Toshiyuki Takeshita	9
15	Factors Influencing the Accuracy of Digital Examination for Determining Fetal Head Position during the First Stage of Labor 2010 ·Journal of Nippon Medical School ·Ikuno Kawabata, (unknown), Atsuko Oya, Masako Hayashi, Hidehiko Miyake, Akihito Nakai, Toshiyuki Takeshita	11
16	Effect of Urinary Trypsin Inhibitor on Preterm Labor with High Granulocyte Elastase Concentration in Cervical Secretions 2010 ·Journal of Nippon Medical School ·Masako Hayashi, Atsuko Oya, Hidehiko Miyake, Akihito Nakai, Toshiyuki Takeshita	5
17	Incidence and risk factors for severe perineal laceration after vaginal delivery in Japanese patients 2006 ·Archives of Gynecology and Obstetrics ·Akihito Nakai, (unknown), Satoru Yamaguchi, Ikuno Kawabata, Masako Hayashi, (unknown), (unknown), Toshiyuki Takeshita	28

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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