| Risks factors | Frequency (%) | P value |
| Old age | 26 (28) |
|
| Immobility | 40 (43) |
|
| Overweight/obesity | 54 (58.1) |
|
| Varicose veins | 3 (3.2) |
|
| Thrombosis past history | 4 (4.3) |
|
| Puerperium | 4 (4.3) |
|
| Surgery | 4 (4.3) |
|
| Prior admission | 21 (22.6) |
|
| Contraceptive use | 4 (4.3) |
|
| Cancer | 4 (4.3) |
|
| Long trip | 18 (19.4) |
|
| Genetic thrombophilia | 2 (2.2) |
|
| Chronic infectious and inflammatory diseases | 12 (12.9) |
|
| HIV infection Mean age of HIV patients Mean age non HIV patient | 21 (22.6) |
|
| 43.6 56.1 | 0.002 |