Early quick acuity score provides more complete data on emergency department walkouts.
BACKGROUND
Many prior studies have compared the acuity of Emergency Department (ED) patients who have Left Without Being Seen (LWBS) against non-LWBS patients. A weakness in these studies is that patients may walk out prior to the assignment of a triage score, biasing comparisons. We report an operational change whereby acuity was assessed immediately upon patient arrival. We hypothesized more patients would receive acuity scores with EQAS. We also sought to compare LWBS and non-LWBS patient characteristics with reduced bias.


METHODS



METHODS
urban, academic medical center. Retrospective cohort study, electronic chart review, collecting data on all ED patients presenting between 4/1/2010 and 10/31/2011 ("Traditional Acuity Score" period, TAS) and from 11/1/2011 to 3/31/2012 ("Early Quick Acuity Score" period, EQAS). We recorded disposition (LWBS versus non-LWBS), acuity and demographics. For each subject during the EQAS period, we calculated how many prior ED visits and how many prior walkouts the subject had had during the TAS period.


RESULTS
Acuity was recorded in 92,275 of 94,526 patients (97.6%) for TAS period, and 25,577 of 25,760 patients (99.3%) for EQAS period, a difference of 1.7% (1.5%, 1.8%). LWBS patients had acuity scores recorded in 5,180 of 7,040 cases (73.6%) during TAS period, compared with 897 of 1,010 cases (88.8%) during the EQAS period, a difference of 15.2% (14.8%, 15.7%). LWBS were more likely than non-LWBS to be male, were younger and had lower acuity scores. LWBS averaged 5.3 prior ED visits compared with 2.8 by non-LWBS, a difference of 2.5 (1.5, 3.5). LWBS averaged 1.3 prior ED walkouts compared with 0.2 among non-LWBS, a difference of 1.1 (0.8, 1.3).


CONCLUSIONS
EQAS resulted in a higher proportion of patients receiving acuity scores, particularly among LWBS. This offers more complete data when comparing LWBS and non-LWBS patient characteristics. The comparison reinforced findings from prior studies.
Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America.
Paris B
PB
Lovett
Department of Emergency Medicine, Providence Little Company of Mary Hospital, Torrance, California, United States of America.
J Akiva
JA
Kahn
Emergency Medicine Residency, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, United States of America.
Stuart E
SE
Greene
Coordinating Center for Clinical Research, Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America.
Matthew A
MA
Bloch
Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America.
Daniel R
DR
Brandt
Thomas Jefferson University, Philadelphia, Pennsylvania, United States of America.
Michael R
MR
Minckler
D000293:Adolescent; D000328:Adult; D000368:Aged; D003710:Demography; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D062072:Patient Acuity; D012720:Severity of Illness Index; D013223:Statistics as Topic; D013997:Time Factors; D016312:Treatment Refusal / Q000706:statistics & numerical data*; D055815:Young Adult