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

 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)

 Female

REF

REF

 Male

1.27

(1.19–1.36)

1.20

(1.17–1.24)

  < 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)

 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)

 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)

 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)

 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)

–

 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)