Table 3.

Emergency department process outcome measures

	Matched non-GEDs (n=152)	GEDs (n=38)
LOS Median (hours, median [IQR])
45–64	3.6 [3.0–4.3]	3.2 [2.8–3.7]
65–74	4.0 [3.4–4.7]	3.5 [3.3–4.4]
75–84	4.2 [3.6–4.9]	3.8 [3.5–4.6]
85+	4.4 [3.7–5.2]	4.0 [3.7–4.9]
72-hour ED Revisit (%, median [IQR])
45–64	3.3% [2.6%–4.3%]	3.2% [2.6%–4.2%]
65–74	3.0% [2.3%–3.9%]	2.8% [2.3%–3.5%]
75–84	2.9% [2.2%–3.6%]	2.7% [2.4%–3.2%]
85+	2.5% [1.8%–3.5%]	2.5% [2.0%–2.9%]
Discharge Disposition (%, median [IQR])
45–64	81.2% [72.1%–90.8%]	79.0% [74.4%–87.3%]
65–74	69.0% [60.7%–83.8%]	67.5% [61.1%–79.4%]
75–84	64.2% [51.7%–83.0%]	60.8% [52.5%–75.9%]
85+	61.3% [44.8%–79.1%]	55.6% [45.2%–72.3%]

Note – Process outcome measures were assessed at the ED site-level. For example, each non-GED had a distribution for LOS (in hours) of their ED visits, with the medians across all non-GEDs then summarized using median and IQRs. To avoid the impact of outlier EDs, the proportion with a 72-hour revisit rate and a discharge disposition are summarized in a similar manner.

Abbreviations: GED – geriatric emergency department; LOS – length of stay