In multivariate analysis we used natural logarithm transformation

In multivariate analysis we used natural logarithm transformations of IP LOS and IP cost to account for the skewed distributions

of LOS and cost. Results Study Population The initial dataset contained 10,975 unique patients, who made 13,648 visits to the ED that resulted in hospital admissions (1.24 visits per patient). We excluded 188 visits Inhibitors,research,lifescience,medical with data linking algorithm errors, unmatched ED or hospital stays, or negative time intervals. The final data set contained 10,847 unique I BET151 patients who made 13,460 visits to the ED that resulted in hospital admissions (Table ​(Table1).1). The mean age was 62.6 years and the sample contained approximately equal numbers of males and females. Inhibitors,research,lifescience,medical Approximately 11.6% (n = 1558) of patients experienced admission delay. Of those admitted, 14% were admitted to ICU or surgery. A higher proportion of non-delayed patients were admitted to ICU or surgery compared to patients in the delayed group (15% versus

7%; p < .0001). After completion of hospital treatment, 74% were discharged home, 17% were discharged to destinations with some level of additional care and 8.7% of patients died in hospital. Table 1 Characteristics of Emergency Department patients who were admitted to the hospital, by presence or absence of admission delay.†¶ The average ED TTD was 419 minutes (median 359.5, IQR 215 - 535). The average ED Inhibitors,research,lifescience,medical Inhibitors,research,lifescience,medical TTD differed by group and was 336 minutes (median = 325) among those who experienced no delay and 1059 minutes (median = 940) among those who were delayed. The average IP LOS was 8.8 days (median 4.6, IQR 2.2 - 9.2) and also differed by group, with

an average of 8.5 days in the non-delay group (median = 4.6) and 11.3 days in the delay group (median = 5.2). A Kaplan-Meier survival curve (Figure ​(Figure2)2) illustrates the difference in IP LOS between the delay group and the non-delay group. The average IP cost was $11,064 (median $5,256, IQR $2,683 – $11,344). In univariate analysis the difference in average cost was significant (p = 0.04), $10,902 Inhibitors,research,lifescience,medical in the non-delay group (median $5,238) compared to $12,307 (median $5,449) in the delayed group. Figure 2 Unadjusted Kaplan-Meier survival curve comparing hospital length of stay of delayed versus non-delayed patients. Among the 1936 patients who were admitted to ICU or surgery, 109 (5.6%) experienced delay. secondly As in the previous case, the IP LOS was longer among delayed patients: 7.9 days for delayed patients versus 8.3 days for non-delayed patients. However, unlike the previous case, the cost was higher among non-delayed patients: $16,167 among non-delayed patients versus $13,075 among delayed patients. Multivariate Analysis IP LOS The fitted multivariate regression model showed that delayed patients have on average 12.4% (95% confidence interval [CI] 6.6% – 18.5%) longer IP LOS compared to patients who were not delayed (p < .

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