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Table 2 Univariate Cox regression analyses – time to readmission

From: Causes and correlates of 30 day and 180 day readmission following discharge from a Medicine for the Elderly Rehabilitation unit

Variable in Analysis

Censored at 30 days

Censored at 180 days

Hazard Ratio (95% CI)

p

Hazard Ratio (95% CI)

p

Age (per year)

0.97 [0.96–0.99]

0.004

0.99 [0.98–0.99]

< 0.001

Female Sex

0.64 [0.49–0.83]

0.001

0.85 [0.80–0.90]

< 0.001

Admission Barthel score (per point)

1.05 [1.01–1.08]

0.01

1.01 [1.00–1.03]

0.13

Discharge Barthel score (per point)

1.01 [0.98–1.04]

0.34

1.01 [0.99–1.02]

0.39

Discharge Home

0.87 [0.65–1.16]

0.30

0.74 [0.64–0.85]

< 0.001

Length of Hospital stay (days)

0.997 [0.994–1.000]

0.04

0.998 [0.997–0.999]

< 0.001

Previous Myocardial Infarction

1.49 [1.09–2.03]

0.01

1.35 [1.17–1.56]

< 0.001

Previous Stroke

1.02 [0.61–1.69]

0.94

1.03 [0.82–1.29]

0.81

Congestive Cardiac Failure

1.90 [1.32–2.76]

0.001

1.68 [1.41–2.00]

< 0.001

Previous Diagnosis of Cancer

1.38 [0.96–1.99]

0.09

1.30 [1.10–1.53]

0.002

Diabetes Mellitus

1.11 [0.99–1.27]

0.09

1.04 [0.98–1.11]

0.19

Chronic Obstructive Pulmonary Disease

1.65 [1.19–2.28]

0.003

1.44 [1.24–1.68]

< 0.001

Medication Count on Discharge (per drug)

1.01 [0.98–1.05]

0.63

1.02 [1.00–1.03]

0.08

Maximum CRP Reading (per mg/L)

1.000 [0.998–1.001]

0.77

1.000 [0.999–1.001]

0.84

Time to half maximum CRP (per week)

0.997 [0.991–1.002]

0.23

1.000 [0.999–1.001]

0.87