Fig. 4

Impact of anemia on the tests used for screening of dysglycemia in the study population. a Histograms representing hemoglobin levels in TB or HHC are shown. Scatter plots depicting the distribution of hemoglobin values (b) as well as of levels of PFG, HbA1c or OGTT (c) in individuals from TB or HHC study groups stratified by anemia status are shown. HbA1c: Glycated Hemoglobin; OGTT: Oral Glucose Tolerance Test. The differences in median values (and IQR) of Glucose, HbA1c and OGGT between DM and preDM (into TB cases and HHC) groups were compared using the Kruskal-Wallis test with Dunn’s multiple comparisons (B-C). Only comparisons with significant p-values are displayed (*p < 0.05, **p < 0.01, ***p < 0.001)