Table 1.

Etiological classification of anemia in the 105 older patients

Causes	Number (%)
Iron deficiency anemia	26 (24.8%)
Chronic gastritis	8
Upper gastrointestinal ulcer	3
Nutritional	5
Gastrointestinal malignancy	2
Others	8
Anemia of chronic disease	24 (22.9%)
Solid tumor malignancy	8
Chronic liver disease	7
Chronic infection	4
Chronic inflammatory condition	2
Others	3
Chronic kidney disease	13 (12.4%)
Hematological disorder	21 (20%)
Myelodysplastic syndrome	4
Multiple myeloma	2
Chronic lymphoproliferative disease	3
Chronic myeloproliferative disease	3
Non-Hodgkin lymphoma	3
Hodgkin Lymphoma	1
Aplastic anemia	2
Beta thalassemia	3
Folate/vitamin B12 deficiency	3 (2.8%)
Hypothyroidism	1 (0.9%)
Multi-factorial cause	8 (7.6%)
Unexplained cause	9 (8.6%)