Table 1 Demographic and Clinical Characteristics
|  | Total (n = 81) | Age 65–79 (n = 41) | Age ≥ 80 (n = 40) | p value |
|---|---|---|---|---|
Age (years) | 79.69 ± 8.01 | 73.05 ± 4.71 | 86.5 ± 3.89 | NS |
Male (n, %) | 37 (46%) | 22 (53%) | 15 (37%) | NS |
Symptoms | ||||
 Cough | 29 (35%) | 20 (49%) | 9 (22%) | 0.01 |
 Dyspnea | 50 (61%) | 24 (58%) | 26 (65%) | NS |
 Fever | 37 (45%) | 25 (61%) | 12 (30%) | 0.005 |
Respiratory Score | ||||
 P/F | 280.37 ± 113.64 | 316.58 ± 105.38 | 241.66 ± 110.95 | 0.009 |
 PSI | 121.59 ± 32.51 | 109.2 ± 27.62 | 134.3 ± 32.52 | 0.0003 |
Medical history (n, %) | ||||
 Neurological disease | 42 (52%) | 17 (40%) | 25 (59%) | 0.005 |
 Cardiovascular disease | 56 (69%) | 23 (56%) | 33 (82%) | 0.01 |
 Diabetes | 22 (27%) | 10 (24%) | 12 (30%) | NS |
 Respiratory disease | 28 (34%) | 15 (36%) | 13 (33%) | NS |
 Cancer disease | 20 (25%) | 12 (29%) | 8 (20%) | NS |
 Chronic Kidney disease | 16 (19%) | 7 (17%) | 9 (22%) | NS |