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Extreme temperature exposure may worsen COPD outcomes in Chinese populations, protocol outlinesExtreme heat and cold may worsen COPD outcomes

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Interpret this as a protocol only; no evidence on temperature-COPD link is yet available.

This publication is a study protocol for a systematic review and meta-analysis, not a completed study. The planned review aims to investigate the association between extreme temperature exposure (both heat and cold) and COPD-related outcomes in Chinese populations. The primary outcomes of interest are COPD-related mortality and morbidity, including hospitalizations and acute exacerbations. The protocol does not report a comparator, sample size, or follow-up duration, as these details will be determined during the review process.

No results are available at this time, as the systematic review has not yet been conducted. The protocol acknowledges that the findings will depend on the quality and availability of observational studies in the literature. The authors have not reported any funding sources or conflicts of interest.

Key limitations include that this is only a protocol; no data from the meta-analysis are available. Clinicians should await the completed review before drawing any conclusions about the impact of extreme temperature on COPD outcomes. The protocol highlights a relevant environmental exposure that may warrant attention in COPD management, but no practice recommendations can be made at this stage.

How this fits prior evidence

This protocol addresses a gap not covered by prior items: the specific role of extreme temperature exposure on COPD outcomes in Chinese populations. Prior coverage focused on COPD dyspnea management, caregiver health literacy, and comorbidities like atrial fibrillation, but none examined environmental temperature as a risk factor. If completed, this review could extend the understanding of non-pharmacological triggers for COPD exacerbations.

If you have COPD, you already know that breathing can be a struggle. But what about when the weather turns extreme? A new research plan aims to find out how heat waves and cold snaps affect people with chronic obstructive pulmonary disease.

The study, which is still in the planning stages, will look at how extreme temperatures impact COPD patients in China. The researchers want to see if hot or cold weather leads to more deaths, hospital stays, or sudden worsening of symptoms.

Right now, this is just a protocol. That means the researchers have laid out their plan, but they haven't actually done the review yet. So we don't have any results to report. The final analysis might take months or years to complete.

This is an early step. It's too soon to say whether extreme weather truly makes COPD worse. But it's a question worth asking, especially as climate change brings more temperature extremes.

What this means for you:
A planned review will explore if extreme heat or cold raises COPD risks, but results aren't available yet.

Common questions

What is this study about?

This is a plan for a systematic review that will look at how extreme temperatures, both hot and cold, affect people with COPD in China. The researchers want to see if extreme weather leads to more deaths, hospitalizations, or sudden worsening of symptoms.

Are there any results yet?

No, not yet. This is just a protocol, which is like a recipe for the review. The researchers have described what they plan to do, but they haven't actually done the review or analyzed any data. So we don't have any findings to share.

Who does this study apply to?

The study focuses on Chinese populations with COPD. It's not clear yet whether the findings would apply to people in other countries or with different backgrounds. The review hasn't been done, so we don't know the answer.

What is a systematic review?

A systematic review is a type of research that gathers and analyzes all the available studies on a specific question. It's like a summary of the best evidence. This particular review is still in the planning stage, so no studies have been analyzed yet.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedJun 2026
View Original Abstract ↓
IntroductionThe Chinese continent is grappling with a rising prevalence of chronic obstructive pulmonary disease (COPD) in conjunction with the growing threat of climate change and its associated extreme temperature. This systematic review aims to assess the relationship between extreme temperature exposures (heat and cold exposure) and COPD health outcomes in Chinese populations.Methods and analysisThis study will assess the relationship between extreme temperature exposures and COPD health outcomes through a systematic review and meta-analysis. Observational studies meeting the inclusion criteria will be included, and the Population-Exposure-Comparator-Outcome-Study (PECOS) research design standard will be adopted to examine how extreme temperatures impact COPD-related mortality and morbidity including hospitalizations and acute exacerbations. A literature search will be conducted across multiple databases, including PubMed, Web of Science, Embase, Chinese National Knowledge Infrastructure (CNKI), WANGFANG Data, VIP and Sinomed. We will evaluate the reporting quality, methodological quality and evidence quality of these observational, cohort, and cross-sectional studies using Risk of Bias in Non-randomized Studies-of Environmental Exposure (ROBINS-E) assessment tool, and integrate the evidence within the GRADE framework. Additionally, the analysis of outcomes will be performed using the narrative synthesis and R software.Ethics and disseminationEthical approval is not required for this review. The results of this study will be disseminated through publication in a peer-reviewed journal.Study protocol registrationhttps://www.crd.york.ac.uk/PROSPERO/view/CRD420261281322, identifier (CRD420261281322).
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