n

%

HBP

47

29.2

Diabetes mellitus

26

16.2

Long-term use of NSAIDs

24

15

HIV

12

7.5

Heart disease

5

3.1

Stroke

5

3.1

Tuberculosis

4

2.5

Cirrhosis of the liver

3

1.86

Benign tumours

3

1.86

Homozygous sickle cell disease

1

0.62

Other

11

6.8