Sanya climatic-treatment cohort profile: objectives, design, and baseline characteristics

Haidao Guan; Guiyan Yang; Jiashi Gao; Xiaoya Lin; Chao Liu; Han Ren; Duyue Chen; Lingyao Zhou; Qian Hu; Yongzhen Huang; Yumei Zhao; Shilu Tong; Zhaohui Lu; Shijian Liu; Dan Wang

doi:10.3389/fpubh.2023.1290303

Sanya climatic-treatment cohort profile: objectives, design, and baseline characteristics

Front Public Health. 2023 Oct 19:11:1290303. doi: 10.3389/fpubh.2023.1290303. eCollection 2023.

Authors

Haidao Guan^#¹, Guiyan Yang^#², Jiashi Gao¹, Xiaoya Lin¹, Chao Liu¹, Han Ren², Duyue Chen², Lingyao Zhou², Qian Hu³, Yongzhen Huang³, Yumei Zhao⁴, Shilu Tong^{5

6}, Zhaohui Lu⁷, Shijian Liu^{1

5

8}, Dan Wang¹

Affiliations

¹ Department of Science and Education, Hainan Branch, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Sanya, China.
² Department of Hospital Management, Hainan Branch, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Sanya, China.
³ Department of Hospital Infection, Hainan Branch, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Sanya, China.
⁴ Department of Nursing, Hainan Branch, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Sanya, China.
⁵ Department of Clinical Epidemiology and Biostatistics, Children Health Advocacy Institute, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
⁶ School of Public Health and Social Work, Queensland University of Technology, Brisbane, QLD, Australia.
⁷ Department of Pediatric Surgery, Hainan Branch, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Sanya, China.
⁸ Department of Big Center, Hainan Branch, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Sanya, China.

^# Contributed equally.

Abstract

Background: The prevalence of allergic diseases has increased globally, climate and environment also have important effects on respiratory or allergic diseases. However, population-based studies investigating the impact of tropical climates and environments on migratory-bird old people (MBOP) are lacking.

Methods/design: For this prospective cohort study, we recruited 756 participants from the community in Sanya City, Hainan Province, China. In addition to the completed baseline survey, a follow-up survey will be conducted during the periods of October-December and March-April for the next 3 years of MBEPs from northern China who spend the winter in Sanya. We will continue to record the height, weight, and blood pressure of all participants, as well as lung function for those with asthma and chronic obstructive pulmonary disease (COPD). Venous blood at baseline and urine samples will be collected during follow-up.

Results: A total of 756 volunteers were recruited. Their average age is 66.1 years; 32.1% of them have high-school educations, while 37.3% have graduated from college or done undergraduate studies. The top five diseases in this cohort are allergic rhinitis (57.9%); eczema, urticaria, or dermatitis (35.6%); bronchitis and bronchiectasis (35.6%); asthma (14.7%); and emphysema (11.7%). Compared with their symptoms while at their summer places of residence, rates of remission reported by participants while living in Sanya were 80.4% for allergic rhinitis, 82.3% for bronchitis and emphysema, 85.2% for asthma, 96.0% for COPD (P < 0.001).

Conclusions: The baseline survey has been completed. The preliminary findings support that a tropical climate may relieve the symptoms of allergic diseases in migratory-bird old people.

Keywords: allergic diseases; asthma; environmental factors; migratory people; tropical climate.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aged
Asthma* / epidemiology
Bronchitis*
Emphysema*
Humans
Prospective Studies
Pulmonary Disease, Chronic Obstructive* / epidemiology
Rhinitis, Allergic*

Grants and funding

The author(s) declare financial support was received for the research, authorship, and/or publication of this article. The study was supported by the Unveiling the Top Project of Sanya Women and Children's Hospital (No. SYFY-JBGS-202201), National Science Foundation of China (82173534 and 81872637), Special Program for Women and Children health (2020YJZX0212), Cultivation Project of Clinical Research from SCMC (LY-SCMC2020-06).