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Cluster Analyses of Association of Weather, Daily Factors and Emergent Medical Conditions

Jasmin Malkic ; University Hospital, Diagnostics, Anesthesia and Technology Division, Uppsala, Sweden
Nermin Sarajlic ; University of Tuzla, Faculty of Electrical Engineering, Tuzla, Bosnia and Herzegovina
Barbara U. R. Smrke ; University Medical Center, Department of Neurosurgery, Ljubljana, Slovenia
Dragica Smrke ; University Medical Center, Department of Traumatology, Ljubljana, Slovenia

Puni tekst: engleski pdf 141 Kb

str. 189-194

preuzimanja: 292



The goal of this study was to evaluate associations between the meteorological conditions and the number of emergency cases for five distinctive causes of dispatch groups reported to SOS dispatch centre in Uppsala, Sweden. Center’s responsibility include alerting to 17 ambulances in whole Uppsala County, area of 8,209 km² with around 320,000 inhabitants representing the target patient group. Source of the medical data for this study is the database of dispatch data for the year of 2009, while the metrological data have been provided from Uppsala University Department of Earth Sciences yearly weather report. Medical and meteorological data were summoned into the unified data space where each point represents a day with its weather parameters and dispatch cause group cardinality. DBSCAN data mining algorithm was implemented to five distinctive groups of dispatch causes after the data spaces have gone through the variance adjustment and the principal component analyses. As the result, several point clusters were discovered in each of the examined data spaces indicating the distinctive conditions regarding the weather and daily cardinality of the dispatch cause, as well as the associations between these two. Most interesting finding is that specific type of winter weather formed a cluster only around the days with the high count of breathing difficulties, while one of the summer weather clusters made similar association with the days with low number of cases. Findings were confirmed by confidence level estimation based on signal to noise ratio for the observed data points.

Ključne riječi

emergency department visit; primary health care; meteorology; data mining; Uppsala

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