J Korean Med Sci.  2022 Jan;37(3):e10. 10.3346/jkms.2022.37.e10.

Joinpoint Regression About Injury Mortality and Hospitalization in Korea

• Park HJ
• Kim UJ
• Lee Wk
• Park B
• Shin Y
• Lee S
• Choi EJ
• Kim Ne
• Park JO
• Park H

• KMID: 2524888
• DOI: http://doi.org/10.3346/jkms.2022.37.e10

Abstract

Background
Injury is a social problem that causes health and property losses, and it is important to identify the size and trend of injury for efficient prevention and management. Therefore, this study analyzed the trends in injury mortality and hospitalization rates from 2005 to 2019 in Korea.
Methods
Using mortality data by Statistics Korea and Korea National Hospital Discharge In-depth injury survey by the Korea Disease Control and Prevention Agency (KDCA), age standardized rates were calculated for death and hospitalization to analyze trends and annual changes with the joinpoint regression model. In addition, annual changes in the hospitalization rate of the transport accident and fall injuries by age group were analyzed, which are the major causes of injuries.
Results
From 2005 to 2019, the injury mortality rate has been on the decline, but the injury hospitalization rate has been on the rise. The annual rate of change varied depending on the injury mechanism, but the mortality rate tended to decrease or remain similar level, while the rate of hospitalization has steadily increased. In addition, by age group, injury mortality and hospitalization rates were high in the elderly. In particular, the hospitalization rate of the elderly was higher when comparing the hospitalization rate of the children in transport accidents and falls. Pedestrian transport accidents tended to decrease under the age of 15, but remained similar for those aged 65 and older, and bicycle accidents tended to increase in both groups. In addition, hospitalization rates were higher in the fall, with both groups showing a statistically significant increase in hospitalization rates caused by falls.
Conclusion
This study analyzed the trend of injury mortality and hospitalization and found that transport accidents and falls may vary depending on the means or age of the accident. Since injury is a big social problem that is a burden of disease, safety education and legal sanctions for injury prevention should be further improved in the future, especially by prioritizing vulnerable groups by age and detailed mechanisms of injury.

Keyword

Injury Trend; Mortality; Hospitalization; Joinpoint Regression

Figure

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  Fig. 1 Injury age adjusted mortality rate (per 100,000 people) trends by injury mechanism, 2005–2019.APC = annual percent change.aIndicates that APC is significantly different from zero at the alpha = 0.05 level.

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  Fig. 2 Injury age adjusted hospitalization rate (per 100,000 people) trends by injury mechanism, 2005–2016.APC = annual percent change.aIndicates that APC is significantly different from zero at the alpha = 0.05 level.

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  Fig. 3 Hospitalization rate (per 100,000 people) of transport accident and falls mechanism by age 0–14, over 65.APC = annual percent change.aIndicates that APC is significantly different from zero at the alpha = 0.05 level.

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