Related Experiment Video
Updated: Jan 9, 2026

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
Published on: January 8, 2020
Short-term prognosis analysis of critically ill patients entering the emergency department by different ways based on
Xia Ji1, Ying An2, Ya-Mei Guan1
1Emergency Department, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Abstract:
The aim was to explore the short-term prognosis of critically ill patients admitted to the emergency department (ED) by 2 different means of transportation (ambulance and nonambulance), aiming to identify critically ill patients and ensure patient safety. Critically ill patients admitted to the ED from January 1, 2020, to December 31, 2020, were included and divided into 2 groups: those with ambulance transportation and those with nonambulance transportation. The 2 groups were matched via the propensity score matching method, and the short-term prognoses of the 2 groups when the patients left the ED were compared. A total of 1150 patients were enrolled, including 713 (62.0%) male and 437 (38.0%) female patients with a median age of 70 (58, 83) years. Patients aged 70 years and older who were transported by ambulance had longer stays (P = .023), experienced a greater number of resuscitations within 24 hours (P = .007) and were more likely to experience in-hospital death or intensive care unit admission (P = .007) than those with nonambulance transportation. Compared with patients with nonambulance transportation, patients with ambulance transportation who were admitted to the ED or who died within 24 hours after discharge from the hospital had more rescue visits and longer stays in the emergency room, and a greater number of these patients were transferred to the ward unit or the hospital. More attention should be given to the management of patients with ambulance transportation to reduce the risk of adverse nursing outcomes.
More Related Videos
Related Concept Videos
Comparing the Survival Analysis of Two or More Groups
Kaplan-Meier Approach
Cancer Survival Analysis
Introduction To Survival Analysis
The primary goal of survival analysis is to estimate survival time—the time...
Actuarial Approach
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Assumptions of Survival Analysis

