Impact of inpatient Care in Emergency Department on outcomes: a quasi-experimental cohort study

Table 2 LOS, Ward Placement, Unplanned Readmissions, and Bill Size Comparisons between AMT and control-group patients

	Pre-AMT (n = 160)	AMT (n = 1092)	Non-AMT (n = 1027)	Difference between AMT and Pre-AMT p-value	Difference between AMT and non-AMT p-value
Early Discharges, n (%)	15 (9.38)	195 (17.86)	97 (9.44)	p = 0.01	p < 0.001*
3-month Re-admission of Early Dischargers, n (%)	0 (0)	29 (15.8)	11 (11.34)	p < 0.001*	p = 0.23
3-month Unplanned Re-admissions, n (%)	43 (26.88)	252 (23.08)	247 (24.05)	p = 0.29	p = 0.60
Placement in Tier 1 Wards, n (%)	68 (42.5)	611 (55.95)	443 (43.14)	p < 0.001*	p < 0.001*
Placement in Tier 2 Wards, n (%)	54 (33.75)	226 (20.70)	375 (36.51)	p < 0.001*	p < 0.001*
Placement in Tier 3 Wards, n (%)	38 (23.75)	60 (5.49)	209 (20.35)	p < 0.001*	p < 0.001*
LOS in General Ward (days), mean (95% CI); median (IQR)	4 (2, 6)	3 (1, 7)	4 (2, 7)	p = 0.15^a	p < 0.001^a*
Bill size (S$) median (IQR)	2838.23 (1607.58, 5162.5)	2762.62 (1179.24, 5470.60)	3087.82 (1590.82, 5757.32)	p = 0.38^a	p < 0.001^a*

We applied a Bonferroni correction to compensate for Type 1 error in multiple pairwise comparisons. To maintain an overall α = 0.05 to reject, the Bonferroni correction for each individual hypothesis is α = 0.00625. Base on this, our test statistic is significant for 3-month readmission of early discharges, placement in tier 1,2 and 3 wards (AMT v Pre-AMT); early discharges, placement in tier 1, 2 and 3 wards, and bill size (AMT v non-AMT)
^acomparison of original values using Mann Whitney U test
*significant after Bonferroni correction

ISSN: 1472-6963