JaLCDOI 10.18926/ATM/61436
FullText URL 75_1_63.pdf
Author Tada, Katsuhiko| Miyagi, Yasunari| Nakamura, Kazue| Yorozu, Moe| Fukushima, Emi| Kumazawa, Kazumasa| Nakamura, Makoto| Kageyama, Misao|
Abstract We used a differential equation to identify the biological relationship between the maternal prepregnancy body mass index (BMI) and lactation on postpartum day 4 in Japanese women with neonatal separation. This retro-spective observational study included 252 mothers (135 primiparas, 117 multiparas) whose singleton neonates were admitted to a neonatal ICU. We formulated hypotheses based on breast anatomy to analyze the relation-ship between the expressed milk obtained on postpartum day 4 and the maternal prepregnancy BMI with the following differential equation: y’(x) = k y(x)/x, where k is the constant, x is the prepregnancy BMI, and y is the expressed milk volume. The formula was then obtained as y(x) = axk, where a is the constant. The Akaike information criterion (AIC) was used to estimate the regression equation with the maximum likelihood for primiparas and multiparas. The best criteria for BMI determined by the AIC were 20.89 kg/m2 in primiparas and 20.19 kg/m2 in multiparas. These were the optimal BMI values for lactation, coinciding with the median prepregnancy BMI in the study population (20.78 kg/m2 in primiparas and 20.06 kg/m2 in multiparas). The formula based on biomathematics might help establish the biological relationship between prepregnancy BMI and breastmilk volume.
Keywords biomathematics body mass index expressed milk lactation
Amo Type Original Article
Published Date 2021-02
Publication Title Acta Medica Okayama
Volume volume75
Issue issue1
Publisher Okayama University Medical School
Start Page 63
End Page 69
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2021 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 33649615
Title Alternative A Study on “Documents of Lawsuits” Exception for Disclosure Based on Open Government Information Law
FullText URL olj_67_2_406.pdf
Author Nakamura, Makoto|
Publication Title Okayama Law Journal
Published Date 2017-12-25
Volume volume67
Issue issue2
Start Page 406
End Page 375
ISSN 0386-3050
language 日本語
File Version publisher
JaLCDOI 10.18926/OLR/54580
Title Alternative Regulations and Problems for Common Use of Personal Data of Persons Needing Assistance for Evacuation
FullText URL olr_017_039_059.pdf
Author Nakamura, Makoto|
Publication Title Okayama Law Review
Published Date 2016-09
Volume volume17
Start Page 39
End Page 59
ISSN 1881-1485
language 日本語
File Version publisher
NAID 120005856008
Author Nakamura, M.|
Published Date 2013-12-27
Publication Title 岡山大學法學會雜誌
Volume volume63
Issue issue2
Content Type Journal Article
Author Nakamura, M.|
Published Date 2006-09-30
Publication Title 岡山大學法學會雜誌
Volume volume56
Issue issue1
Content Type Journal Article
Title Alternative A Study on Data Subjects’ Right of Access to Minors’ Personal Data and on Offer of Minors' Personal Data to the Parents
FullText URL olj_057_1_308_284.pdf
Author Nakamura, M.|
Publication Title 岡山大學法學會雜誌
Published Date 2007-09-28
Volume volume57
Issue issue1
Start Page 308
End Page 284
ISSN 0386-3050
language 日本語
File Version publisher
NAID 40015672469
Author Nakamura, M.|
Published Date 2008-08-29
Publication Title 岡山大學法學會雜誌
Volume volume58
Issue issue1
Content Type Journal Article
Author Nakamura, M.|
Published Date 2010-08-25
Publication Title 岡山大學法學會雜誌
Volume volume60
Issue issue1
Content Type Journal Article