Table 1.
Demographic characteristics of pneumonia cases. N: Number, w/in: Within, HIV: Human Immunodeficiency Virus, COPD: Chronic Obstructive Pulmonary Disease. p-Values obtained by Fisher exact or Chi-square testing as appropriate.
| Non-Legionella | Legionella | p-Value | |
|---|---|---|---|
| N = 54 (%) | N = 17 (%) | ||
| Male | 51 (94) | 17 (100) | 1 |
| Age > 75 | 17 (31) | 1 (6) | 0.11 |
| Age 50–75 | 35 (65) | 15 (88) | |
| Age < 50 | 2 (4) | 1 (6) | |
| Steroid therapy | 2 (4) | 2 (13) | 0.24 |
| Nursing home resident within last 30 days | 39 (72) | 2 (13) | 0.031 |
| Hospitalization w/in last 90 days | 23 (43) | 4 (24) | 0.16 |
| Enrolled in Wound Care | 2 (4) | 0 | 1 |
| HIV | 0 | 0 | |
| Cancer or hematologic malignancy | 17 (31) | 4 (24) | 0.76 |
| Chemotherapy in last 6 months | 3 (5) | 1 (6) | 1 |
| Immunomodulator/biologic therapy | 2 (4) | 3 (18) | 0.085 |
| Current tobacco use | 16 (29) | 10 (59) | 0.082 |
| Any tobacco use | 37 (69) | 14 (82) | 0.57 |
| Active alcohol abuse | 3 (6) | 0 | 1 |
| Diabetes mellitus | 17 (31) | 5 (29) | 1 |
| COPD | 33 (61) | 6 (35) | 0.093 |
| Heart failure | 15 (28) | 5 (29) | 1 |
| Kidney disease | 13 (24) | 4 (24) | 1 |
| Cirrhosis | 1 (2) | 2 (13) | 0.14 |
| Cerebrovascular disease | 10 (19) | 1 (6) | 0.28 |