Age effects on case fatality rates of injury patients by mechanism

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• 作者：Yong Joo Park ; MD^a ; ^{parkyongjoo@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Young Sun Ro ; MD ; DrPH^a ; ^{Ro.youngsun@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Sang Do Shin ; MD ; PhD ; MPH^a ; ^b ; ^{shinsangdo@medimail.co.kr" class="auth_mail" title="E-mail the corresponding author} ; Kyoung Jun Song ; MD ; PhD^a ; ^b ; ^{skciva@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Seung Chul Lee ; MD ; PhD^a ; ^c ; ^{scl0126@hanmail.net" class="auth_mail" title="E-mail the corresponding author} ; Yu Jin Kim ; MD ; PhD^a ; ^b ; ^{myda02@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Joo Yeong Kim ; MD^a ; ^d ; ^{blj01he@naver.com" class="auth_mail" title="E-mail the corresponding author} ; Ki Jeong Hong ; MD^a ; ^b ; ^{emkjhong@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Jung Eun Kim ; MPH^a ; ^{ckck1121@hanmail.net" class="auth_mail" title="E-mail the corresponding author} ; Min Jung Kim ; MPH^a ; ^{minkim229@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Sang Chul Kim ; MD ; PhD^a ; ^e ; ^{ooiarahan@nate.com" class="auth_mail" title="E-mail the corresponding author}
• 刊名：The American Journal of Emergency Medicine
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：34
• 期：3
• 页码：515-520
• 全文大小：349 K

文摘

Case fatality from injury increases exponentially with age. The objective of this study is to identify age effects on case fatality of injury patients by injury mechanism.

Methods

This is an observational study using the Emergency Department–based Injury In-depth Surveillance data from 2007 to 2012. Eligibility was all injured patients, excluding those with unknown information for age, disposition after emergency department or admission, or injury mechanism. End point of this study was inhospital mortality. Injury mechanism was categorized into road transport injury (RTI), fall, collision, cut/pierce, burn, poisoning, and miscellaneous. Case fatality ratio was calculated to evaluate age effects on case fatality by injury mechanism and gender.

Result

Among 927 011 injury patients, a total of 924 755 patients were analyzed. Total case fatality rate was 0.9%, and rates by injury mechanisms were 4.4% in poisoning, 2.1% in RTI, and 0.8% in fall. By age and gender, the highest crude case fatality rate was 19.74% observed in older than 80-year-old men with poisoning. Case fatality ratios in both genders increased by age from 60- to 69-, 70- to 79-, to older than 80-year-old patients; ratios by injury mechanisms were 13.71, 20.76, and 22.29 (male) and 7.21, 11.18, and 13.05 (female) in poisoning; 5.46, 9.30, and 14.13 (male) and 3.90, 7.96, and 12.08 (female) in RTI; 1.22, 1.52, and 2.02 (male) and 1.14, 2.15, and 6.42 (female) in burn.

Conclusions

Case fatality rates of injury increased with age; however, the trends in increase differed by injury mechanisms and gender. Strategies for injury prevention and decreasing mortality should consider the age effects on case fatality of different injury mechanisms.