Table III shows the prevalences of anaemia, iron deficiency and iron-deficiency anaemia among the blood donors. The prevalence of anaemia alone (Hb < 11.0 g/dL) was 13.7%, while that of isolated iron deficiency was 20.6%. The prevalence of iron-deficiency anaemia in the study population was 12.0%. Interestingly, all three of these abnormalities were found almost exclusively among regular blood donors.