Table 3.

Final logistic regression and Andersen-Gill regression model results to identify risk factors for any repeat ED visit and more frequent repeat ED visits, respectively

	Logistic regression	Andersen-Gill regression
	Odds ratio (95% Confidence interval)	Incidence rate Ratio (95% confidence interval)
Age
65–74	REF	REF
75–84	1.01 (0.91–1.11)	1.03 (0.99–1.07)
85–94	1.00 (0.88–1.06)	1.05 (1.01–1.10)
95 and older	0.91 (0.79–1.04)	1.17 (1.10–1.25)
Sex
Female	REF	REF
Male	1.27 (1.19–1.36)	1.20 (1.17–1.24)
Length of stay in LTC
< 30 days	REF	REF
30–89 days	0.71 (0.56–0.89)	0.90 (0.83–0.97)
90–364 days	0.60 (0.49–0.73)	0.78 (0.73–0.83)
365 or more days	0.45 (0.38–0.57)	0.71 (0.67–0.76)
Cognitive impairment
Minimal	REF	REF
Moderate	0.92 (0.86–1.01)	0.98 (0.95–1.01)
Severe	0.92 (0.84–0.99)	1.03 (0.99–1.07)
ADL dependence
Minimal	REF	REF
Moderate	1.11 (1.02–1.21)	1.08 (1.04–1.13)
Dependent	1.07 (0.98–1.18)	1.23 (1.18–1.28)
CHESS scale score
0	REF	REF
1	1.08 (1.01–1.15)	1.10 (1.06–1.13)
2	1.14 (1.05–1.24)	1.17 (1.13–1.21)
3	1.19 (1.02–1.39)	1.24 (1.16–1.31)
4 or 5	1.10 (0.83–1.44)	1.23 (1.11–1.37)
Diagnoses
Diabetes	1.28 (1.19–1.37)	1.13 (1.10–1.16)
Congestive heart failure	1.26 (1.16–1.37)	1.14 (1.10–1.18)
Arthritis	0.93 (0.87–1.00)	0.93 (0.90–0.95)
Alzheimer’s disease or Other Dementia	0.93 (0.86–1.00)	0.95 (0.92–0.98)
Chronic obstructive pulmonary disease	1.26 (1.17–1.37)	1.11 (1.07–1.14)
Liver disease	–	1.09 (0.97–1.22)
Renal failure	1.35 (1.23–1.49)	1.16 (1.12–1.20)
Dysrhythmia	1.14 (1.03–1.27)	–
Cancer	1.06 (0.95–1.17)	–
Number of chronic conditions
0 or 1	REF	REF
2	0.95 (0.85–1.05)	0.99 (0.95–1.04)
3	0.90 (0.81–1.01)	0.96 (0.92–1.01)
4	0.88 (0.78–1.00)	0.95 (0.90–1.00)
5 or more	0.82 (0.71–0.95)	0.94 (0.89–0.99)
Fell in prior 30 days	–	0.95 (0.92–0.98)