Clinical trial NCT06448156: Epidemiological Study of Out-of-hospital Cardiac Arrest in Guangzhou
Official title: Epidemiological Study of Out-of-hospital Cardiac Arrest in Guangzhou
Study type: OBSERVATIONAL
Overall status: ACTIVE_NOT_RECRUITING
Conditions: Cardiac Arrest
Sudden Cardiac Death
Lead sponsor: Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Sponsor class: OTHER
First posted: 2024-06-07
Enrollment: 44375
Sex: ALL
Minimum age (years): 0
Maximum age (years): 120
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Cases in the database with a secondary diagnosis containing the diagnostic keywords "cardiac arrest" and "sudden death".Data were collected from the GZ-EMS Command Centre's dispatch system database of pre-hospital data for the central urban districts of City.

Brief summary: Aim This was a population-based retrospective cohort study of OHCA. This study intends to retrospectively analyze the data of pre-hospital emergency system in Guangzhou for 10 years, explore the incidence trend of OHCA in Guangzhou for 10 years; Through further analysis, we try to explore the time distribution characteristics of OHCA in order to understand the epidemiological characteristics and rules of OHCA in super large cities in southern China.

Methods The pre-hospital traffic data in the main urban area of Guangzhou Emergency Medical Command Center database from 2011 to 2020 were collected. The cases diagnosed as "cardiac arrest" and "sudden death" were screened, and the cases with non-cardiac causes in the diagnosis were deleted. The crude incidence rate and age-standardized incidence rate of OHCA were calculated. Joinpoint software was used to calculate the changing nodes in the OHCA incidence trend, and the AnnualPercent Change (APC) and Average AnnualPercent Change (Average AnnualPercent Change, APC) of OHCA incidence were calculated. AAPC). The OHCA data were grouped according to the six main urban areas, and the crude incidence rate, ASIR and changing trend of the six main urban areas were calculated. The data of OHCA were grouped by age, and the crude incidence rate, ASIR and changing trend of each age group were calculated. The data information was divided into groups according to 24 hours a day, 7 days a week, and four seasons. The number of OHCA cases in different time periods was statistically described. The data were imported into SPSS 26.0 for analysis, and Mann-Kendall test was used to evaluate the statistical significance of the time trend. Time rhythm variability was tested for mean distribution using chi-square goodness of fit test.


Eligibility criteria: Inclusion Criteria:

Cases in the database with a secondary diagnosis containing the diagnostic keywords "cardiac arrest" and "sudden death"

Exclusion Criteria:

1. cases where the diagnosis of "cardiac arrest" and "sudden death" includes a diagnosis of a non-cardiac cause such as asphyxiation, suicide, drowning, advanced cancer, trauma, shock, poisoning, cerebral vascular accident, etc;
2. cases with duplicate records of sex, age, time of call, pick-up address and initial diagnosis

Primary outcomes:
measure: Crude incidence rate
timeFrame: 2011-01-01 to 2020-12-31
measure: Age standardized incidence rate
timeFrame: 2011-01-01 to 2020-12-31
measure: Average annual percentage change
timeFrame: 2011-01-01 to 2020-12-31
measure: Annual percentage change
timeFrame: 2011-01-01 to 2020-12-31
Secondary outcomes:
Other outcomes:
Locations:
city: Guangdong
country: China
facility: Yu Tao
state: 广东省
Study officials:
affiliation: Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, China
name: Tao Yu
role: STUDY_DIRECTOR
References: