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Association between rainfall and readmissions of rheumatoid arthritis patients: a time-stratified case-crossover analysis.

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Title: Association between rainfall and readmissions of rheumatoid arthritis patients: a time-stratified case-crossover analysis.
Authors: Xie, Jingui1,2 (AUTHOR), Zhu, Yongjian2 (AUTHOR), Fan, Yiming2 (AUTHOR) jinkui@mail.ustc.edu.cn, Xin, Ling3 (AUTHOR), Liu, Jian4 (AUTHOR)
Source: International Journal of Biometeorology. Jan2020, Vol. 64 Issue 1, p145-153. 9p.
Subject Terms: *Rheumatoid arthritis, *Rainfall, *Joint pain, *Chinese medicine, *Lumbar pain, *University hospitals, *Weather
Geographic Terms: Hefei Shi (China)
Abstract: It has been reported that local weather is associated with the symptoms of joint pain in patients with rheumatoid arthritis (RA), and many people believe their pain becomes worse when facing rainy days. However, limited studies explored the effects of weather on RA patients' healthcare-seeking behavior. Our study aimed to investigate the relationship between rainfall and readmission behavior of patients with RA in Hefei, China, based on hospitalization data from the First Affiliated Hospital of Anhui University of Chinese Medicine from May 2012 to June 2016 and weather data from National Meteorological Information Center during the same study period. Using a time-stratified case-crossover study design and conditional logistic regression, we found a negative association between current day rainfall and readmission (unadjusted: OR = 0.82, p < 0.05; adjusted: OR = 0.83, p < 0.1), which is contrary to our common belief. In lagged models, we observed that rainfall was significantly and positively associated with readmissions at lag 6 days (unadjusted: OR = 1.12, p < 0.1; adjusted: OR = 1.17, p < 0.05) and lag 7 days (unadjusted: OR = 1.13, p < 0.05; adjusted: OR = 1.21, p < 0.01). Additionally, stratified analyses showed the unanticipated finding was only statistically significant for younger patients (< 65 years) and females. Our study adds new evidence that the association between the healthcare-seeking behavior of patients with RA and local rainfall may be different, compared with the positive relationship between symptoms of joint pain and rainfall. [ABSTRACT FROM AUTHOR]
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  Label: Title
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  Data: Association between rainfall and readmissions of rheumatoid arthritis patients: a time-stratified case-crossover analysis.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Xie%2C+Jingui%22&quot;&gt;Xie, Jingui&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Zhu%2C+Yongjian%22&quot;&gt;Zhu, Yongjian&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Fan%2C+Yiming%22&quot;&gt;Fan, Yiming&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; jinkui@mail.ustc.edu.cn&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Xin%2C+Ling%22&quot;&gt;Xin, Ling&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Liu%2C+Jian%22&quot;&gt;Liu, Jian&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22International+Journal+of+Biometeorology%22&quot;&gt;International Journal of Biometeorology&lt;/searchLink&gt;. Jan2020, Vol. 64 Issue 1, p145-153. 9p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Rheumatoid+arthritis%22&quot;&gt;Rheumatoid arthritis&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Rainfall%22&quot;&gt;Rainfall&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Joint+pain%22&quot;&gt;Joint pain&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Chinese+medicine%22&quot;&gt;Chinese medicine&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Lumbar+pain%22&quot;&gt;Lumbar pain&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22University+hospitals%22&quot;&gt;University hospitals&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Weather%22&quot;&gt;Weather&lt;/searchLink&gt;
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Hefei+Shi+%28China%29%22&quot;&gt;Hefei Shi (China)&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: It has been reported that local weather is associated with the symptoms of joint pain in patients with rheumatoid arthritis (RA), and many people believe their pain becomes worse when facing rainy days. However, limited studies explored the effects of weather on RA patients&#39; healthcare-seeking behavior. Our study aimed to investigate the relationship between rainfall and readmission behavior of patients with RA in Hefei, China, based on hospitalization data from the First Affiliated Hospital of Anhui University of Chinese Medicine from May 2012 to June 2016 and weather data from National Meteorological Information Center during the same study period. Using a time-stratified case-crossover study design and conditional logistic regression, we found a negative association between current day rainfall and readmission (unadjusted: OR = 0.82, p &lt; 0.05; adjusted: OR = 0.83, p &lt; 0.1), which is contrary to our common belief. In lagged models, we observed that rainfall was significantly and positively associated with readmissions at lag 6 days (unadjusted: OR = 1.12, p &lt; 0.1; adjusted: OR = 1.17, p &lt; 0.05) and lag 7 days (unadjusted: OR = 1.13, p &lt; 0.05; adjusted: OR = 1.21, p &lt; 0.01). Additionally, stratified analyses showed the unanticipated finding was only statistically significant for younger patients (&lt; 65 years) and females. Our study adds new evidence that the association between the healthcare-seeking behavior of patients with RA and local rainfall may be different, compared with the positive relationship between symptoms of joint pain and rainfall. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s00484-019-01805-y
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 145
    Subjects:
      – SubjectFull: Rheumatoid arthritis
        Type: general
      – SubjectFull: Rainfall
        Type: general
      – SubjectFull: Joint pain
        Type: general
      – SubjectFull: Chinese medicine
        Type: general
      – SubjectFull: Lumbar pain
        Type: general
      – SubjectFull: University hospitals
        Type: general
      – SubjectFull: Weather
        Type: general
      – SubjectFull: Hefei Shi (China)
        Type: general
    Titles:
      – TitleFull: Association between rainfall and readmissions of rheumatoid arthritis patients: a time-stratified case-crossover analysis.
        Type: main
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          Name:
            NameFull: Xie, Jingui
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            NameFull: Zhu, Yongjian
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            NameFull: Fan, Yiming
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            NameFull: Xin, Ling
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            NameFull: Liu, Jian
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            – D: 01
              M: 01
              Text: Jan2020
              Type: published
              Y: 2020
          Identifiers:
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              Value: 00207128
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              Value: 64
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            – TitleFull: International Journal of Biometeorology
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