Table 2.

Probability of post-discharge 30-day hospital readmissions, across AUDIT-C Risk Groups.

	Nondrinking	Low-risk drinking	Moderate-risk drinking	High-risk drinking

	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)
	N = 357,086	N= 156,928	N = 58,149	N=7167
Total 30-day hospital readmissions
Unadjusted	14.7 (14.6–14.9%)^***	12.1 (11.9–12.2%)	12.0 (11.7–12.3%)	14.5 (13.7–15.3%)^***
Adjusted for demographics^a	14.6 (14.5–14.7%)^***	12.2 (12.0–12.3%)	12.2 (11.9–12.5%)	15.4 (14.5–16.3%)^***
Primary model^b	14.2 (14.1–14.3%)^***	12.9 (12.7–13.0%)	12.9 (12.6–13.1%)	13.8 (13.0–14.6%)^*
Secondary model^c	14.2 (14.0–14.3%)^***	12.9 (12.8–13.1%)	13.0 (12.8–13.3%)	13.7 (12.9–14.5%)
	N= 267,746	N= 105,023	N = 37,981	N=5300
30-day readmissions after index hospitalization for a medical condition
Unadjusted	16.0 (15.8–16.1%)^***	13.6 (13.4–13.8%)	13.7 (13.4–14.1%)	16.2 (15.2–17.2%)^***
Adjusted for demographics^a	15.9(15.8–16.0%)^***	13.6 (13.4–13.9%)	13.8 (13.5–14.2%)	16.8 (15.8–17.8%)^***
Primary model^b	15.6 (15.5–15.7%)^***	14.3 (14.0–14.5%)	14.4 (14.0–14.7%)	15.3 (14.4–16.3%)^*
Secondary model^c	15.5 (15.4–15.7%)^***	14.3 (14.1–14.6%)	14.6 (14.2–14.9%)	15.3 (14.3–16.3%)
	N= 89,340	N = 51,905	N = 20,168	N= 1867
30-day readmissions after index hospitalization for a surgical condition
Unadjusted	11.1 (10.9–11.3%)^***	9.0 (8.7–9.2%)	8.8 (8.4–9.2%)	9.6 (8.3–11.0%)
Adjusted for demographics^a	10.9(10.7–11.2%)^***	9.1 (8.8–9.3%)	8.9 (8.5–9.3%)	10.4 (9.0–11.9%)
Primary model^b	10.5 (10.3–10.7%)^***	9.6 (9.3–9.9%)	9.6 (9.2–10.1%)	9.6 (8.3–11.0%)
Secondary model^c	10.4 (10.2–10.6%)^***	9.7 (9.4–9.9%)	9.7 (9.3–10.2%)	9.6 (8.2–10.9%)

Adjusted for age, gender, race, year of discharge.

Adjusted for age, gender, race, year of discharge, past-year tobacco diagnosis, past-year PTSD diagnosis, comorbid condition indicators, days from AUDIT-C screen to index stay, index length of stay, number of past-year hospitalizations, any past-year discharge AMA.

^***

p<0.001.

^**

p<0.01.

p<0.05 compared low-risk drinking (referent group).