File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Transmissibility of the Ice Bucket Challenge among globally influential celebrities: retrospective cohort study

TitleTransmissibility of the Ice Bucket Challenge among globally influential celebrities: retrospective cohort study
Authors
Issue Date2014
PublisherBMJ Publishing Group
Citation
BMJ, 2014, v. 349, Article no. g7185 How to Cite?
AbstractObjectives To estimate the transmissibility of the Ice Bucket Challenge among globally influential celebrities and to identify associated risk factors. Design Retrospective cohort study. Setting Social media (YouTube, Facebook, Twitter, Instagram). Participants David Beckham, Cristiano Ronaldo, Benedict Cumberbatch, Stephen Hawking, Mark Zuckerberg, Oprah Winfrey, Homer Simpson, and Kermit the Frog were defined as index cases. We included contacts up to the fifth generation seeded from each index case and enrolled a total of 99 participants into the cohort. Main outcome measures Basic reproduction number R0, serial interval of accepting the challenge, and odds ratios of associated risk factors based on fully observed nomination chains; R0 is a measure of transmissibility and is defined as the number of secondary cases generated by a single index in a fully susceptible population. Serial interval is the duration between onset of a primary case and onset of its secondary cases. Results Based on the empirical data and assuming a branching process we estimated a mean R0 of 1.43 (95% confidence interval 1.23 to 1.65) and a mean serial interval for accepting the challenge of 2.1 days (median 1 day). Higher log (base 10) net worth of the participants was positively associated with transmission (odds ratio 1.63, 95% confidence interval 1.06 to 2.50), adjusting for age and sex. Conclusions The Ice Bucket Challenge was moderately transmissible among a group of globally influential celebrities, in the range of the pandemic A/H1N1 2009 influenza. The challenge was more likely to be spread by richer celebrities, perhaps in part reflecting greater social influence.
Persistent Identifierhttp://hdl.handle.net/10722/207851
ISSN
2015 Impact Factor: 19.697
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorNi, MYen_US
dc.contributor.authorChan, BHYen_US
dc.contributor.authorLeung, GMen_US
dc.contributor.authorLau, EHYen_US
dc.contributor.authorPang, HMHen_US
dc.date.accessioned2015-01-19T11:23:20Z-
dc.date.available2015-01-19T11:23:20Z-
dc.date.issued2014en_US
dc.identifier.citationBMJ, 2014, v. 349, Article no. g7185en_US
dc.identifier.issn1756-1833-
dc.identifier.urihttp://hdl.handle.net/10722/207851-
dc.description.abstractObjectives To estimate the transmissibility of the Ice Bucket Challenge among globally influential celebrities and to identify associated risk factors. Design Retrospective cohort study. Setting Social media (YouTube, Facebook, Twitter, Instagram). Participants David Beckham, Cristiano Ronaldo, Benedict Cumberbatch, Stephen Hawking, Mark Zuckerberg, Oprah Winfrey, Homer Simpson, and Kermit the Frog were defined as index cases. We included contacts up to the fifth generation seeded from each index case and enrolled a total of 99 participants into the cohort. Main outcome measures Basic reproduction number R0, serial interval of accepting the challenge, and odds ratios of associated risk factors based on fully observed nomination chains; R0 is a measure of transmissibility and is defined as the number of secondary cases generated by a single index in a fully susceptible population. Serial interval is the duration between onset of a primary case and onset of its secondary cases. Results Based on the empirical data and assuming a branching process we estimated a mean R0 of 1.43 (95% confidence interval 1.23 to 1.65) and a mean serial interval for accepting the challenge of 2.1 days (median 1 day). Higher log (base 10) net worth of the participants was positively associated with transmission (odds ratio 1.63, 95% confidence interval 1.06 to 2.50), adjusting for age and sex. Conclusions The Ice Bucket Challenge was moderately transmissible among a group of globally influential celebrities, in the range of the pandemic A/H1N1 2009 influenza. The challenge was more likely to be spread by richer celebrities, perhaps in part reflecting greater social influence.-
dc.languageengen_US
dc.publisherBMJ Publishing Group-
dc.relation.ispartofBMJen_US
dc.titleTransmissibility of the Ice Bucket Challenge among globally influential celebrities: retrospective cohort studyen_US
dc.typeArticleen_US
dc.identifier.emailNi, MY: nimy@hku.hken_US
dc.identifier.emailChan, BHY: branford@hku.hken_US
dc.identifier.emailLeung, GM: gmleung@hku.hken_US
dc.identifier.emailLau, EHY: ehylau@hku.hken_US
dc.identifier.emailPang, HMH: herbpang@hku.hken_US
dc.identifier.authorityNi, MY=rp01639en_US
dc.identifier.authorityLeung, GM=rp00460en_US
dc.identifier.authorityLau, EHY=rp01349en_US
dc.identifier.authorityPang, HMH=rp01857en_US
dc.identifier.doi10.1136/bmj.g7185en_US
dc.identifier.hkuros242257en_US
dc.identifier.volume349en_US
dc.identifier.spagearticle no. g7185en_US
dc.identifier.epagearticle no. g7185en_US
dc.identifier.isiWOS:000346763900004-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats