Article Figures & Data
Figures
- Figure 1.
Selection of cases and controls.
- Figure 2.
Distributions of age, previous hospitalizations, length of stay, and discharge medications between readmission cases and controls.
Tables
Not Readmitted Within 30 Days (n = 192) Readmitted Within 30 Days (n = 84) Odds Ratio (95% CI) P Age, mean years (SD) 60.8 (22.4) 64.7 (20.4) .2350 18–50 63 (32.8) 19 (22.6) 51–64 34 (17.7) 18 (21.4) 65–79 38 (19.8) 20 (23.8) ≥80 57 (29.7) 27 (32.1) Sex .6021 Female 103 (53.6) 48 (57.1) Male 89 (46.4) 36 (42.9) 0.87 (0.50–1.50) Marital status .0369 Single, widowed, or divorced 81 (42.2) 47 (56.0) Married 111 (57.8) 37 (44.0) 0.58 (0.33–0.995) Education level, mean years (SD) 13.1 (2.55) 12.6 (2.24) .1372 Living situation 1.0000 Skilled care, assisted living 39 (20.3) 17 (20.2) Home, apartment 153 (79.7) 67 (79.8) 1.00 (0.51–2.03) Hospitalizations in past 12 months, mean (SD) 0.60 (1.02) 2.32 (2.61) <.0001 ≥1 Hospitalization in past 12 months 67 (34.9) 56 (66.7) 3.71 (2.10–6.68) <.0001 ED visits in previous 12 months, mean (SD) 2.03 (3.00) 4.12 (4.17) <.0001 Length of stay (days) , mean (SD) 2.34 (2.25) 3.50 (4.24) .0422 >3-Day hospital stay 34 (17.7) 27 (32.1) 2.19 (1.16–4.12) .0113 Discharge medications, mean (SD) 10.2 (6.22) 13.2 (6.80) .0006 ≥10 Discharge medications 99 (51.6) 60 (71.4) 2.34 (1.31–4.27) .0023 ICU stay 14 (7.3) 2 (2.4) 0.31 (0.03–1.40) .1606 Discharge to skilled nursing home 28 (14.6) 12 (14.3) 0.98 (0.43–2.12) 1.0000 Comorbidities, mean (SD) 1.2 (1.44) 2.1 (1.67) <.0001 Comorbidities* Coronary artery disease (410–414) 30 (15.6) 23 (27.4) 2.03 (1.04–3.94) .0303 Congestive heart failure (428) 21 (10.9) 18 (21.4) 2.21 (1.04–4.68) .0252 Atrial fibrillation (427.3) 19 (9.9) 11 (13.1) 1.37 (0.56–3.68) .5285 Diabetes (249–250) 29 (15.1) 21 (25.0) 1.87 (0.94–3.33) .0615 Chronic obstructive pulmonary disease (491–492, 496) 34 (17.7) 25 (29.8) 1.96 (1.03–3.72) .0372 Chronic kidney disease (582, 585–586, 588) 27 (14.1) 20 (23.8) 1.90 (0.94–3.81) .0560 Cancer (140–209) 15 (7.8) 14 (16.7) 2.35 (1.00–5.53) .0335 Psychiatric (291–292, 294–304, 306–312) 63 (32.8) 41 (48.8) 1.95 (1.12–3.40) .0150 Attended follow-up visit 151 (78.6) 69 (83.1) 1.34 (0.66–2.84) .4177 -
For continuous values, the mean and (standard deviation) are reported. All other values are reported as n (%). Bolded values are statistically significant (P < .5).
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↵* ICD-9 codes used to define comorbidity are listed in parenthesis.
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ED, emergency department; ICU, intensive care unit.
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Odds Ratio 95% CI P (z) Age ≥65 years 0.71 (0.35–1.43) 0.3451 Married 0.54 (0.30–0.97) 0.0398 ≥1 Hospitalization in past 12 months 2.71 (1.49–4.95) 0.0011 ≥10 Discharge medications 1.73 (0.86–3.53) 0.1256 >3-Day stay 2.16 (1.11–4.21) 0.0232 Discharge to nursing home 0.63 (0.25–1.50) 0.3038 Coronary artery disease 1.80 (0.86–3.76) 0.1165 Congestive heart failure 1.28 (0.56–2.89) 0.5503 Chronic obstructive pulmonary disease 1.27 (0.62–2.58) 0.5085 Cancer 1.78 (0.73–4.33) 0.2040 Psychiatric 1.10 (0.60–2.03) 0.7492 -
Bolded values are statistically significant (P < .05).
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