Advanced

Association of Weather with Day-to-Day Incidence of Myocardial Infarction : A SWEDEHEART Nationwide Observational Study

Mohammad, Moman A. LU ; Koul, Sasha LU ; Rylance, Rebecca LU ; Fröbert, Ole; Alfredsson, Joakim; Sahlén, Anders; Witt, Nils; Jernberg, Tomas; Muller, James and Erlinge, David LU (2018) In JAMA Cardiology 3(11). p.1081-1089
Abstract

Importance: Whether certain weather conditions modulate the onset of myocardial infarction (MI) is of great interest to clinicians because it could be used to prevent MIs as well as guide allocation of health care resources. Objective: To determine if weather is associated with day-to-day incidence of MI. Design, Setting, and Participants: In this prospective, population-based and nationwide setting, daily weather data from the Swedish Meteorological and Hydrological Institute were extracted for all MIs reported to the Swedish nationwide coronary care unit registry, Swedish Web-System for Enhancement and Development of Evidence-Based Care in Heart Disease Evaluated According to Recommended Therapies (SWEDEHEART), during 1998 to 2013 and... (More)

Importance: Whether certain weather conditions modulate the onset of myocardial infarction (MI) is of great interest to clinicians because it could be used to prevent MIs as well as guide allocation of health care resources. Objective: To determine if weather is associated with day-to-day incidence of MI. Design, Setting, and Participants: In this prospective, population-based and nationwide setting, daily weather data from the Swedish Meteorological and Hydrological Institute were extracted for all MIs reported to the Swedish nationwide coronary care unit registry, Swedish Web-System for Enhancement and Development of Evidence-Based Care in Heart Disease Evaluated According to Recommended Therapies (SWEDEHEART), during 1998 to 2013 and then merged with each MI on date of symptom onset and coronary care unit. All patients admitted to any coronary care unit in Sweden owing to MI were included. A total of 280 873 patients were included, of whom 92 044 were diagnosed as having ST-elevation MI. Weather data were available for 274 029 patients (97.6%), which composed the final study population. Data were analyzed between February 2017 and April 2018. Exposures: The nationwide daily mean air temperature, minimum air temperature, maximum air temperature, wind velocity, sunshine duration, atmospheric air pressure, air humidity, snow precipitation, rain precipitation, and change in air temperature. Main Outcomes amd Measures: The nationwide daily counts of MI as outcome. Results: In 274029 patients, mean (SD) age was 71.7 (12) years. Incidence of MI increased with lower air temperature, lower atmospheric air pressure, higher wind velocity, and shorter sunshine duration. The most pronounced association was observed for air temperature, where a 1-SD increase in air temperature (7.4°C) was associated with a 2.8% reduction in risk of MI (unadjusted incidence ratio, 0.972; 95% CI, 0.967-0.977; P <.001). Results were consistent for non-ST-elevation MI as well as ST-elevation MI and across a large range of subgroups and health care regions. Conclusions and Relevance: In this large, nationwide study, low air temperature, low atmospheric air pressure, high wind velocity, and shorter sunshine duration were associated with risk of MI with the most evident association observed for air temperature..

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
JAMA Cardiology
volume
3
issue
11
pages
1081 - 1089
publisher
American Medical Association
external identifiers
  • scopus:85055808744
ISSN
2380-6583
DOI
10.1001/jamacardio.2018.3466
language
English
LU publication?
yes
id
eeb64070-f0c0-4cb6-b10c-cab47ccaaf4f
date added to LUP
2018-12-07 12:44:21
date last changed
2019-08-14 04:29:03
@article{eeb64070-f0c0-4cb6-b10c-cab47ccaaf4f,
  abstract     = {<p>Importance: Whether certain weather conditions modulate the onset of myocardial infarction (MI) is of great interest to clinicians because it could be used to prevent MIs as well as guide allocation of health care resources. Objective: To determine if weather is associated with day-to-day incidence of MI. Design, Setting, and Participants: In this prospective, population-based and nationwide setting, daily weather data from the Swedish Meteorological and Hydrological Institute were extracted for all MIs reported to the Swedish nationwide coronary care unit registry, Swedish Web-System for Enhancement and Development of Evidence-Based Care in Heart Disease Evaluated According to Recommended Therapies (SWEDEHEART), during 1998 to 2013 and then merged with each MI on date of symptom onset and coronary care unit. All patients admitted to any coronary care unit in Sweden owing to MI were included. A total of 280 873 patients were included, of whom 92 044 were diagnosed as having ST-elevation MI. Weather data were available for 274 029 patients (97.6%), which composed the final study population. Data were analyzed between February 2017 and April 2018. Exposures: The nationwide daily mean air temperature, minimum air temperature, maximum air temperature, wind velocity, sunshine duration, atmospheric air pressure, air humidity, snow precipitation, rain precipitation, and change in air temperature. Main Outcomes amd Measures: The nationwide daily counts of MI as outcome. Results: In 274029 patients, mean (SD) age was 71.7 (12) years. Incidence of MI increased with lower air temperature, lower atmospheric air pressure, higher wind velocity, and shorter sunshine duration. The most pronounced association was observed for air temperature, where a 1-SD increase in air temperature (7.4°C) was associated with a 2.8% reduction in risk of MI (unadjusted incidence ratio, 0.972; 95% CI, 0.967-0.977; P &lt;.001). Results were consistent for non-ST-elevation MI as well as ST-elevation MI and across a large range of subgroups and health care regions. Conclusions and Relevance: In this large, nationwide study, low air temperature, low atmospheric air pressure, high wind velocity, and shorter sunshine duration were associated with risk of MI with the most evident association observed for air temperature..</p>},
  author       = {Mohammad, Moman A. and Koul, Sasha and Rylance, Rebecca and Fröbert, Ole and Alfredsson, Joakim and Sahlén, Anders and Witt, Nils and Jernberg, Tomas and Muller, James and Erlinge, David},
  issn         = {2380-6583},
  language     = {eng},
  number       = {11},
  pages        = {1081--1089},
  publisher    = {American Medical Association},
  series       = {JAMA Cardiology},
  title        = {Association of Weather with Day-to-Day Incidence of Myocardial Infarction : A SWEDEHEART Nationwide Observational Study},
  url          = {http://dx.doi.org/10.1001/jamacardio.2018.3466},
  volume       = {3},
  year         = {2018},
}