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J Clin Pathol 53:933-937 doi:10.1136/jcp.53.12.933

Clinical use of WHO haemoglobin colour scale: validation and critique

Table 5

Comparison of clinical signs and colour scale

Reference Hb (g/dl) Clinical signs present (n/set)* Anaemia indicated by scale reading (n/set)
*The patients were assessed clinically for anaemia only in some of the clinics (314 cases), whereas the scale assessments of anaemia included all the patients in our study.
**The scale reading indicated only a mild anaemia (10 or 11 g/dl) in the nine cases.
***The scale reading indicated a mild anaemia (10 or 11 g/dl) in 74 cases, moderate anaemia (8 or 9 g/dl) in four cases, and no anaemia (12 g/dl) in the remaining 36 cases.
Hb, haemoglobin.
12 or more 26/56 (16.6%) 9/261 (3.4%)**
10 to <12 23/74 (31.1%) 78/114 (68.4%)***
8 to <10 42/63 (66.6%) 98/101 (97.0%)
6 to <8 14/18 (77.7%) 34/34 (100%)
<10 59/84 (70.2%) 169/171 (98.8%)
<8 17/21 (80.9%) 70/70 (100%)
<6 3/3 (100%) 36/36 (100%)

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