Characteristic | Patients with pneumonia; n = 1392 no. (%) | Patients without pneumonia; n = 3373 no. (%) | Unadjusted odds ratio (95 % CI) | Adjusted odds ratio (95 % CI) |
---|---|---|---|---|
Age in years, median (range) | 74 (18–101) | 69 (18–102) | --- | --- |
Age ≥75 years | 663 (48) | 1333 (40) | 1.39 (1.23–1.58) | 1.27 (1.10–1.46) |
Male Sex | 660 (47) | 1430 (42) | --- | --- |
Race/Ethnicity | ||||
White, non-Hispanic | 900 (65) | 2016 (60) | 1.41 (1.18–1.69) | 1.24 (1.03–1.49) |
Black, non-Hispanic | 204 (15) | 642 (19) | ref | ref |
Hispanic | 67 (5) | 180 (5) | 1.18 (0.85–1.63) | 1.13 (0.80–1.58) |
Othera | 48 (3) | 115 (4) | 1.32 (0.91–1.92) | 1.26 (0.86–1.85) |
Unknown | 173 (12) | 420 (12) | --- | --- |
Virus Type | ||||
Influenza A | 1037 (74) | 2484 (74) | 1.10 (0.95–1.28) | --- |
Influenza B | 298 (21) | 787 (23) | ref | --- |
Unknown | 57 (4) | 98 (3) | --- | --- |
Influenza Vaccineb | ||||
Yes | 677 (49) | 1586 (47) | 1.20 (1.04–1.38) | 1.00 (0.86–1.17) |
No | 438 (31) | 1228 (36) | ref | --- |
Unknown | 265 (19) | 536 (16) | 1.39 (1.16–1.67) | --- |
Nursing Home Residentc | 228 (16) | 382 (11) | 1.53 (1.28–1.83) | 1.37 (1.14–1.66) |
Underlying Conditionsd | 1179 (85) | 2855 (85) | 1.01 (0.85–1.19) | --- |
Asthma | 174 (13) | 599 (18) | 0.66 (0.55–0.76) | 0.76 (0.62–0.92) |
Chronic Lung Disease | 417 (30) | 787 (23) | 1.40 (1.22–1.62) | 1.37 (1.18–1.59) |
Cardiovascular Disease | 652 (47) | 1462 (43) | 1.15 (1.02–1.31) | 0.99 (0.86–1.13) |
Chronic Metabolic Disease | 481 (35) | 1161 (34) | 1.01 (0.88–1.15) | --- |
Renal Disease | 216 (15) | 499 (15) | 1.05 (0.88–1.25) | --- |
Immunosuppression | 186 (13) | 348 (10) | 1.33 (1.09–1.61) | 1.45 (1.19–1.78) |
Cognitive Dysfunction | 136 (10) | 276 (8) | 1.22 (0.98–1.51) | --- |
Neuromuscular Disease | 79 (6) | 168 (5) | 1.15 (0.87–1.51) | --- |
Seizure Disorder | 51 (4) | 127 (4) | 0.97 (0.69–1.36) | --- |
Cancer | 52 (4) | 118 (4) | 1.07 (0.77–1.49) | --- |
Other Condition | 67 (5) | 165 (5) | 0.98 (0.73–1.32) | --- |
Symptom onset to admission, median days (range)e | 2 (0–63) | 2 (0–83) | --- | --- |