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Methodological Challenges in Studies Comparing Prehospital Advanced Life Support with Basic Life Support.

Abstract：

:Determining the most appropriate level of care for patients in the prehospital setting during medical emergencies is essential. A large body of literature suggests that, compared with Basic Life Support (BLS) care, Advanced Life Support (ALS) care is not associated with increased patient survival or decreased mortality. The purpose of this special report is to synthesize the literature to identify common study design and analytic challenges in research studies that examine the effect of ALS, compared to BLS, on patient outcomes. The challenges discussed in this report include: (1) choice of outcome measure; (2) logistic regression modeling of common outcomes; (3) baseline differences between study groups (confounding); (4) inappropriate statistical adjustment; and (5) inclusion of patients who are no longer at risk for the outcome. These challenges may affect the results of studies, and thus, conclusions of studies regarding the effect of level of prehospital care on patient outcomes should require cautious interpretation. Specific alternatives for avoiding these challenges are presented. Li T , Jones CMC , Shah MN , Cushman JT , Jusko TA . Methodological challenges in studies comparing prehospital Advanced Life Support with Basic Life Support. Prehosp Disaster Med. 2017;32(4):444-450.

journal_name

Prehosp Disaster Med

journal_title

Prehospital and disaster medicine

authors

Li T,Jones CMC,Shah MN,Cushman JT,Jusko TA

doi

10.1017/S1049023X17000292

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

444-450

issue

4

eissn

1049-023X

issn

1945-1938

pii

S1049023X17000292

journal_volume

32

pub_type

杂志文章

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