The Revised Identification of Seniors At Risk screening tool predicts readmission in older hospitalized patients: a cohort study

Table 4 Logistic regression models for individual ISAR-R items and readmission outcomes (n = 386)

Outcomes and ISAR items	Logistic regression for each outcome
Outcomes and ISAR items	Univariate models		Multivariable model 1		Multivariable model 2
	OR	[95% CI]	OR	[95% CI]	OR	[95% CI]
30-day readmission:
1- Help on regular basis	1.11	[0.62; 2.00]	0.89	[0.48; 1.67]	0.78	[0.40; 1.51]
2- More help before hospitalization	1.83	[1.02; 3.29]	1.68	[0.92; 3.09]	1.65	[0.89; 3.04]
3- Previous hospitalization (6 m)	1.85	[1.03; 3.32]	1.69	[0.92; 3.12]	1.52	[0.73; 3.19]
4-Problem with vision	2.85	[1.56; 5.18]	2.84	[1.53; 5.25]	2.85	[1.53; 5.32]
5-Problem with memory	0.89	[0.36; 2.20]	0.70	[0.27; 1.79]	0.61	[0.23; 1.64]
6-Polypharmacy	1.28	[0.69; 2.35]	1.09	[0.58; 2.08]	1.17	[0.61; 2.24]
C-statistic [95% CI]			0.67 [0.58; 0.76]		0.68 [0.59; 0.77]
90-day readmission:
1- Help on regular basis	1.16	[0.73; 1.84]	0.94	[0.57; 1.54]	0.87	[0.52; 1.47]
2- More help before hospitalization	1.86	[1.17; 2.95]	1.66	[1.03; 2.66]	1.62	[0.99; 2.62]
3- Previous hospitalization (6 m)	2.18	[1.37; 3.47]	1.97	[1.22; 3.18]	1.55	[0.87; 2.89]
4-Problem with vision	1.75	[1.07; 2.88]	1.64	[0.98; 2.75]	1.71	[1.01; 2.89]
5-Problem with memory	1.69	[0.89; 3.20]	1.44	[0.74; 2.81]	1.39	[0.68; 2.82]
6-Polypharmacy	1.25	[0.78; 2.01]	1.08	[0.66; 1.78]	1.12	[0.67; 1.86]
C-statistic [95% CI]			0.65 [0.58; 0.72]		0.68 [0.61; 0.75]

For each outcome: model 1 includes all the ISAR-R items; model 2 include all the ISAR-R items plus covariates (hospital of index admission, service, age, previous admission at different hospital, language, informant)
OR Odds Ratio, CI Confidence Interval, Significant ORs (p-value < 0.05) are in bold font

ISSN: 1471-2318