Table 1.
Variable | All subjects N=2183 |
Men n=1136 |
Women n=1047 |
P value |
---|---|---|---|---|
Demographics | ||||
Age, mean (sd) | 64.9 (18.0) | 64.9 (18.0) | 64.9 (18.1) | 0.94 |
Race, white, n (%) | 1738 (79.6) | 919 (80.9) | 819 (78.2) | 0.12 |
Health insurance, n (%) | 2056 (94.1) | 1053 (92.7) | 1003 (95.8) | 0.002 |
Health behaviors | ||||
Ever smoked, n (%) | 1415 (64.8) | 805 (70.9) | 610 (58.3) | <0.0001 |
Years smoked, (mean, sd) | 31.1 (16.4) | 31.8 (16.2) | 30.1 (16.6) | 0.06 |
Charlson comorbidity score>0, n (%) | 1481 (67.8) | 795 (70.0) | 686 (65.5) | 0.02 |
COPD**, n (%) | 513 (23.6) | 270 (23.8) | 243 (23.3) | 0.76 |
Cardiac disease, n (%) | 513 (26.5) | 331 (32.1) | 182 (20.2) | <0.0001 |
Renal disease, n (%) | 51 (2.3) | 29 (2.6) | 22 (2.1) | 0.48 |
Cirrhosis, n (%) | 5 (0.7) | 3 (0.8) | 2 (0.6) | 0.72 |
Diabetes , n (%) | 414 (19.0) | 222 (19.5) | 192 (18.3) | 0.47 |
Neoplastic disease, n (%) | 132 (7.2) | 85 (8.7) | 47 (5.5) | 0.007 |
AIDS, n (%) | 37 (1.7) | 26 (2.3) | 11 (1.1) | 0.02 |
‘Do not resuscitate’ order prior to admission, n (%) |
123 (5.6) | 53 (4.7) | 70 (6.7) | 0.04 |
Vaccination status | ||||
Influenza vaccine in preceding eight months, n (%) |
807 (47.8) | 451 (50.3) | 356 (45.0) | 0.02 |
Pneumococcal vaccine, n (%) | 764 (45.7) | 404 (45.7) | 360 (45.7) | 0.99 |
Symptoms and therapy prior to hospitalization | ||||
Duration (median, mean, IQR) | 3, 4.9 (1-5) | 3, 5.1 (1-6) | 3, 4.7, (1-6) | 0.02 |
Received antibiotics within seven days, n (%) |
370 (17.0) | 164 (14.5) | 206 (19.7) | 0.0010 |
Hospital characteristics | ||||
Teaching hospital n (%) | 1200 (55.1) | 574 (54.8) | 626 (55.3) | 0.84 |
Bed size n (%) | ||||
<100 beds | 55 (2.5) | 23 (2) | 3.2 (3.1) | 0.28 |
100-249 beds | 952 (43.7) | 511 (53.7) | 441 (42.1) | |
250-499 | 841 (38.6) | 432 (38.1) | 409 (39.1) | |
>500 | 332 (15.2) | 165 (15.8) | 167 (14.7) |
Data was missing for fewer than 5% of cohort for most variables
COPD — chronic obstructive pulmonary disease