. 2021 Aug 16;56(6):1146–1155. doi: 10.1111/1475-6773.13773

TABLE 3.

Summary of MIH‐CP effect stratified by time of index hospitalization discharge

Outcome		Effect size
		IRR [95% CI] ^a	Adjusted IRR [95% CI] ^b
Inpatient admission	MIH‐CP enrolled before 2019 vs. unenrolled	1.34 [0.92, 1.96]	1.38 [0.95, 2.02]
30 days postdischarge	MIH‐CP enrolled in 2019 vs. unenrolled	1.01 [0.73, 1.40]	1.09 [0.78, 1.53]

		Difference [95% CI] ^c	Adjusted difference [95% CI]
Excess days	MIH‐CP enrolled before 2019 vs. unenrolled	0.17 [−0.5, 0.84]	0.21 [−0.42, 0.84] ^d
In acute care ^e	MIH‐CP enrolled in 2019 vs. unenrolled	−0.16 [−0.69, 0.37]	−0.09 [−0.59, 0.41] ^d
Charges 30 days	MIH‐CP enrolled before 2019 vs. unenrolled	2531.45 [−1239.22, 6302.12]	3036.44 [−533.48, 6606.35] ^f
Postdischarge, $	MIH‐CP enrolled in 2019 vs. unenrolled	1186.78 [−1797.57, 4171.13]	1526.58 [−1305.89, 4359.04] ^f
Charges 60 days	MIH‐CP enrolled before 2019 vs. unenrolled	1353.71 [−3541.73, 6249.16]	2045.21 [−2525.43, 6615.86] ^f
Postdischarge, $	MIH‐CP enrolled in 2019 vs. unenrolled	433.36 [−3429.87, 4296.58]	1096.88 [−2529.59, 4723.34] ^f

		IRR [95% CI] ^g	Adjusted IRR [95% CI]
ED visits 30 days	MIH‐CP enrolled before 2019 vs. unenrolled	0.77 [0.45, 1.33]	0.73 [0.46, 1.15] ^h
Postdischarge	MIH‐CP enrolled in 2019 vs. unenrolled	0.80 [0.53, 1.21]	0.86 [0.61, 1.20] ^h
ED visits 60 days	MIH‐CP enrolled before 2019 vs. unenrolled	1.02 [0.65, 1.59]	0.98 [0.69, 1.40] ^h
Postdischarge	MIH‐CP enrolled in 2019 vs. unenrolled	0.96 [0.68, 1.36]	1.04 [0.79, 1.37] ^h
Obs 30 days	MIH‐CP enrolled before 2019 vs. unenrolled	2.66 [1.39, 5.08]^*	2.26 [1.15, 4.45] ⁱ ^, ^*
Postdischarge	MIH‐CP enrolled after 2019 vs. unenrolled	1.44 [0.76, 2.70]	1.50 [0.78, 2.87] ⁱ
Obs 60 days	MIH‐CP enrolled before 2019 vs. unenrolled	1.75 [1.03, 3.00]^*	1.49 [0.85, 2.61] ⁱ
Postdischarge	MIH‐CP enrolled after 2019 vs. unenrolled	1.24 [0.77, 1.98]	1.26 [0.77, 2.08] ⁱ

Abbreviations: CI, confidence interval; ED, emergency department; IRR, incidence rate ratio; MIH‐CP, Mobile Integrated Health Community Paramedicine program; Obs, hospital observation status; OR, odds ratio.

^{^a}

Calculated as MIH‐CP ÷ unenrolled.

^{^b}

Adjusted for employment status; charges in the 30, 60, 90, and 365 days preceding discharge; inpatient visits in the 30 and 365 days preceding discharge; and amount charged at the index discharge using mixed‐effects Poisson regression model to account for matching pairs.

^{^c}

Calculated as MIH‐CP − unenrolled.

^{^d}

Adjusted for employment status; charges in the 30, 60, 90, and 365 days preceding discharge; inpatient visits in the 30 and 365 days preceding discharge; ED visits in the 30 and 365 days preceding discharge; and amount charged at the index discharge using mixed‐effects linear model to account for matching pairs.

^{^e}

Calculated as [Days of unplanned inpatient hospitalization + # hospital observations + 0.5*ED visits] within 30 days of hospital discharge.

^{^f}

Adjusted for employment status; charges in the 30, 60, 90, and 365 days preceding discharge; ED visits in the 30 and 365 days preceding discharge; and amount charged at the index discharge using mixed‐effects negative binomial regression model to account for matching pairs.

^{^g}

Calculated as MIH‐CP ÷ unenrolled.

^{^h}

Adjusted for employment status; charges in the 30, 60, 90, and 365 days preceding discharge; inpatient visits in the 30 and 365 days preceding discharge; observation hospitalizations in the 30 and 365 days preceding discharge; and amount charged at the index discharge using mixed‐effects Poisson regression model to account for matching pairs.

^ⁱ

Adjusted for employment status; charges in the 30, 60, 90, and 365 days preceding discharge; and amount charged at the index discharge using mixed‐effects linear model to account for matching pairs.

Denotes statistical significance at p < 0.05.