Is the network of heterosexual contact in Japan scale free?

Elucidation of the structure of human sexual networks is not only an interesting topic in the area of social networks but also an important clue for understanding the spreading risk of sexually transmitted infections (STIs). Some previous studies have indicated that sexual networks are scale free, w...

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Main Authors: Hiromu Ito, Kazuhiro Tamura, Takayuki Wada, Taro Yamamoto, Satoru Morita
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0221520
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author Hiromu Ito
Kazuhiro Tamura
Takayuki Wada
Taro Yamamoto
Satoru Morita
author_facet Hiromu Ito
Kazuhiro Tamura
Takayuki Wada
Taro Yamamoto
Satoru Morita
author_sort Hiromu Ito
collection DOAJ
description Elucidation of the structure of human sexual networks is not only an interesting topic in the area of social networks but also an important clue for understanding the spreading risk of sexually transmitted infections (STIs). Some previous studies have indicated that sexual networks are scale free, while others have suggested that they are not. We conducted a Web-based survey on sexual contact in Japan to collect data on cumulative (total) heterosexual partners and the number of recent (in the last three or previous three months) heterosexual partners. To determine whether the number of heterosexual contacts in Japan has a power-law tail, we used maximum likelihood fitting methods and Kolmogorov-Smirnov tests. For confirmation, we also used the Akaike information criterion (AIC) and the Bayesian information criterion (BIC). Our results indicate that the distributions of the number of sexual partners in Japan have power-law tails.
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spelling doaj.art-118f77520c5341fe9e72f2f95fcee62f2022-12-21T18:39:41ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01148e022152010.1371/journal.pone.0221520Is the network of heterosexual contact in Japan scale free?Hiromu ItoKazuhiro TamuraTakayuki WadaTaro YamamotoSatoru MoritaElucidation of the structure of human sexual networks is not only an interesting topic in the area of social networks but also an important clue for understanding the spreading risk of sexually transmitted infections (STIs). Some previous studies have indicated that sexual networks are scale free, while others have suggested that they are not. We conducted a Web-based survey on sexual contact in Japan to collect data on cumulative (total) heterosexual partners and the number of recent (in the last three or previous three months) heterosexual partners. To determine whether the number of heterosexual contacts in Japan has a power-law tail, we used maximum likelihood fitting methods and Kolmogorov-Smirnov tests. For confirmation, we also used the Akaike information criterion (AIC) and the Bayesian information criterion (BIC). Our results indicate that the distributions of the number of sexual partners in Japan have power-law tails.https://doi.org/10.1371/journal.pone.0221520
spellingShingle Hiromu Ito
Kazuhiro Tamura
Takayuki Wada
Taro Yamamoto
Satoru Morita
Is the network of heterosexual contact in Japan scale free?
PLoS ONE
title Is the network of heterosexual contact in Japan scale free?
title_full Is the network of heterosexual contact in Japan scale free?
title_fullStr Is the network of heterosexual contact in Japan scale free?
title_full_unstemmed Is the network of heterosexual contact in Japan scale free?
title_short Is the network of heterosexual contact in Japan scale free?
title_sort is the network of heterosexual contact in japan scale free
url https://doi.org/10.1371/journal.pone.0221520
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AT takayukiwada isthenetworkofheterosexualcontactinjapanscalefree
AT taroyamamoto isthenetworkofheterosexualcontactinjapanscalefree
AT satorumorita isthenetworkofheterosexualcontactinjapanscalefree