Survival risk ratios for ICD-10-AM injury diagnosis classifications for all ages

The survival risk ratios (SRRs) were calculated using linked
hospitalisation and mortality data from New South Wales (NSW), Australia. Hospital admissions was obtained from the NSW
Ministry of Health and included all injury-related admissions identified using
a principal diagnosis of injury (ICD-10-AM: S00-T89) during 1 January 2010 to
30 June 2014. Mortality data was
obtained from the NSW Registry of Births, Deaths and Marriages from 1 January
2010 to 31 March 2015. Hospitalisation
and mortality data were probabilistic linked by the Centre for Health Record
Linkage (CHeReL). NSW covers an area of 800,628km2 with a population
of around 7.7 million.

The SRRs were calculated for each injury diagnosis. A SRR
represents the ratio of the number of individuals with each injury diagnosis
who did not die to the total number of individuals with the injury diagnosis. The SRRs can be used to estimate injury
severity (i.e. the International Classification of Injury Severity Score:
ICISS). The ICISS is calculated by
applying the SRRs to each injury diagnosis code in your data. There are
two methods commonly used to then estimate ICISS values: (i)
multiplicative-injury ICISS where ICISS is the product of all SRRs for each of
the individual’s injuries; and (ii) single worst-injury, where ICISS only
includes the worst-injury (i.e. the injury diagnosis with the lowest SRR) as
the single worst-injury.

本研究采用新南威尔士州（NSW）澳大利亚的医院住院和死亡数据，计算了生存风险比（SRRs）。住院数据来源于新南威尔士州卫生部，包括2010年1月1日至2014年6月30日期间，以损伤为主要诊断（ICD-10-AM：S00-T89）识别的所有与损伤相关的住院记录。死亡数据则来源于新南威尔士州出生、死亡和婚姻登记处，时间范围为2010年1月1日至2015年3月31日。住院和死亡数据通过健康记录链接中心（CHeReL）进行概率性链接。新南威尔士州占地面积为800,628平方公里，人口约770万。针对每种损伤诊断，计算了生存风险比。生存风险比表示具有每种损伤诊断的个人中未死亡人数与该损伤诊断总人数之比。生存风险比可用于估计损伤严重程度（即国际损伤严重程度评分：ICISS）。ICISS通过将生存风险比应用于数据中的每个损伤诊断代码来计算。通常有两种方法用于估计ICISS值：一是乘法损伤ICISS，其中ICISS为每个个人损伤的生存风险比的乘积；二是单次最重伤，其中ICISS仅包括最重伤（即生存风险比最低的损伤诊断）作为单一的最重伤。