| Age (mean, years) |
72.3(12.4) |
71.1(14.4) |
<0.001 |
| Male |
164(49.0) |
1,046(54.7) |
0.05 |
| Race, White |
298(89.0) |
1,713(85.2) |
0.54 |
| Season of hospitalization |
|
|
|
| Fall |
73(21.8) |
510(26.7) |
0.29 |
| Winter |
94(28.1) |
489(25.6) |
|
| Spring |
92(27.5) |
517(27.0) |
|
| Summer |
76(22.7) |
398(20.8) |
|
| Hospitalized during a weekday |
254(75.8) |
1,443(75.4) |
0.87 |
| Medical History |
|
|
|
| Atrial Fibrillation |
59(17.6) |
280(14.6) |
0.16 |
| Heart Failure |
96 (28.7) |
351(18.3) |
<0.001 |
| Hypertension |
246(73.4) |
1,367(71.4) |
0.45 |
| Stroke |
46(13.7) |
200(10.5) |
0.80 |
| Diabetes |
140(41.8) |
565(29.5) |
<0.001 |
| Chronic Obstructive Pulmonary Disease |
68(20.3) |
334(17.5) |
0.21 |
| Chronic Kidney Disease |
85(25.4) |
297(15.5) |
<0.001 |
| Peripheral Vascular Disease |
76(22.7) |
273(14.3) |
<0.001 |
| Anemia |
30(9.0) |
145(7.6) |
0.39 |
| Length of Stay at index hospitalization (mean, days) |
7.0(6.5) |
5.5(5.4) |
<0.001 |
| Physiologic variables |
|
|
|
| Estimated Glomerular Filtration Rate, (mean, ml/min/1.73m2 ) |
53.1(21.9) |
57.7(22.6) |
0.51 |
| Systolic Blood Pressure (mean, mm Hg) |
144.4(32.2) |
145.4(31.1) |
0.42 |
| Diastolic Blood Pressure (mean, mm Hg) |
74.8(17.9) |
79.0(19.4) |
0.07 |
| Serum Glucose (mean, mg/dl) |
175.1(78.6) |
162.9(75.9) |
0.41 |
| Total serum cholesterol(mean, mg/dl) |
171.5(48.5) |
179.2(46.2) |
0.36 |
| Complications during hospitalization |
|
|
|
| Cardiogenic shock |
11(3.3) |
53(2.8) |
0.60 |
| Heart Failure |
161 (48.1) |
650(34.0) |
<0.001 |
| Atrial Fibrillation |
74(22.1) |
411(21.5) |
0.80 |
| Stroke |
3(0.9) |
36(1.9) |
0.20 |
