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Article: Case Clustering in Pityriasis Rosea: A Multicenter Epidemiologic Study in Primary Care Settings in Hong Kong

TitleCase Clustering in Pityriasis Rosea: A Multicenter Epidemiologic Study in Primary Care Settings in Hong Kong
Authors
Issue Date2003
PublisherAmerican Medical Association. The Journal's web site is located at http://www.archdermatol.com
Citation
Archives of Dermatology, 2003, v. 139 n. 4, p. 489-493 How to Cite?
AbstractOBJECTIVES: To investigate the epidemiology of pityriasis rosea in primary care settings in Hong Kong and to analyze for temporal clustering. DESIGN: Retrospective epidemiologic study. SETTING: Six primary care teaching practices affiliated with a university. Patients Forty-one patients with pityriasis rosea, 564 patients with atopic dermatitis (negative control condition), and 35 patients with scabies (positive control condition). METHODS: We retrieved all records of patients with pityriasis rosea, atopic dermatitis, or scabies diagnosed in 3 years. We analyzed temporal clustering by a method based on a regression model. RESULTS: The monthly incidence of pityriasis rosea is negatively but insignificantly correlated with mean air temperature (gamma s = -0.41, P =.19) and mean total rainfall (gamma s = -0.34, P =.27). Three statistically significant clusters with 7, 6, and 7 cases were identified (P =.03), occurring in the second coldest month in the year (February), the second hottest month (July), and a temperate month (April), respectively. For atopic dermatitis (negative control condition), the nonclustering regression model was selected by Akaike information criteria. For scabies (positive control condition), 1 cluster of 20 cases was detected (P =.03). CONCLUSIONS: Significant temporal clustering independent of seasonal variation occurred in our series of patients with pityriasis rosea. This may be indicative of an infectious cause.
Persistent Identifierhttp://hdl.handle.net/10722/225950
ISSN
2014 Impact Factor: 4.789

 

DC FieldValueLanguage
dc.contributor.authorChuh, AAT-
dc.contributor.authorLee, A-
dc.contributor.authorMolinari, N-
dc.date.accessioned2016-05-31T06:54:19Z-
dc.date.available2016-05-31T06:54:19Z-
dc.date.issued2003-
dc.identifier.citationArchives of Dermatology, 2003, v. 139 n. 4, p. 489-493-
dc.identifier.issn0003-987X-
dc.identifier.urihttp://hdl.handle.net/10722/225950-
dc.description.abstractOBJECTIVES: To investigate the epidemiology of pityriasis rosea in primary care settings in Hong Kong and to analyze for temporal clustering. DESIGN: Retrospective epidemiologic study. SETTING: Six primary care teaching practices affiliated with a university. Patients Forty-one patients with pityriasis rosea, 564 patients with atopic dermatitis (negative control condition), and 35 patients with scabies (positive control condition). METHODS: We retrieved all records of patients with pityriasis rosea, atopic dermatitis, or scabies diagnosed in 3 years. We analyzed temporal clustering by a method based on a regression model. RESULTS: The monthly incidence of pityriasis rosea is negatively but insignificantly correlated with mean air temperature (gamma s = -0.41, P =.19) and mean total rainfall (gamma s = -0.34, P =.27). Three statistically significant clusters with 7, 6, and 7 cases were identified (P =.03), occurring in the second coldest month in the year (February), the second hottest month (July), and a temperate month (April), respectively. For atopic dermatitis (negative control condition), the nonclustering regression model was selected by Akaike information criteria. For scabies (positive control condition), 1 cluster of 20 cases was detected (P =.03). CONCLUSIONS: Significant temporal clustering independent of seasonal variation occurred in our series of patients with pityriasis rosea. This may be indicative of an infectious cause.-
dc.languageeng-
dc.publisherAmerican Medical Association. The Journal's web site is located at http://www.archdermatol.com-
dc.relation.ispartofArchives of Dermatology-
dc.subject.meshCluster Analysis-
dc.subject.meshHong Kong - epidemiology-
dc.subject.meshIncidence-
dc.subject.meshMiddle Aged-
dc.subject.meshPityriasis Rosea - epidemiology-
dc.titleCase Clustering in Pityriasis Rosea: A Multicenter Epidemiologic Study in Primary Care Settings in Hong Kong-
dc.typeArticle-
dc.identifier.doi10.1001/archderm.139.4.489-
dc.identifier.pmid12707096-
dc.identifier.scopuseid_2-s2.0-0037386863-
dc.identifier.hkuros139908-
dc.identifier.volume139-
dc.identifier.issue4-
dc.identifier.spage489-
dc.identifier.epage493-
dc.publisher.placeUnited States-

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