Table 2. Clinicodemographics.
| Characteristics | Number of papers | Total population | % or Mean |
|---|---|---|---|
| Demographics | |||
| Age | |||
| Absolute mean | 6 | 1,867 | 58 |
| <60 years | 2 | 154/283 | 54.4% |
| ≥60 years | 2 | 129/283 | 45.6% |
| Gender | |||
| Male | 8 | 1,770/2,150 | 82.3% |
| Female | 8 | 380/2,150 | 17.7% |
| Comorbidities | |||
| Smoking | 8 | 1,283/2,150 | 59.7% |
| Alcohol | 2 | 177/1,255 | 14.1% |
| Hypertension | 1 | 2/151 | 1.3% |
| Retroviral diseases | 1 | 7/151 | 18% |
| Pneumonia | 1 | 4/151 | 10.3% |
| Pleural effusion | 1 | 4/151 | 10.3% |
| Sickle cell disease | 1 | 1/151 | 2.6% |
| Tuberculosis | 2 | 4/218 | 1.8% |
| Anemia | 2 | 28/1,255 | 2.2% |
| COPD | 1 | 6/67 | 9% |