Table 2

Haemoglobin concentration, anaemia prevalence, bias and concordance as determined by capillary blood on the HemoCue compared with venous blood on the haematology analyser

CountryGroupHemoCue modelnHb g/L
capillary
AnaemiaHb g/L venousAnaemiaBias g/L (precision) capillary−venousConcordance coefficient
Mean±SDn (%)Mean±SDn (%)Mean (95% CI)ρc (95% CI)
Cambodia*Non-pregnant women301808107.2±9.4808 (100)115.9±13.3468 (57.9)−8.7 (−28.8 to 11.3)0.47 (0.43 to 0.51)
Cambodia†Non-pregnant women201+450121.0±13.7197 (43.8)123.6±11.3149 (33.1)−2.6 (−18.1 to 12.9)0.78 (0.75 to 0.82)
Cambodia‡Non-pregnant women301277119.1±12.3137 (49.4)116.6±11.7163 (58.8)2.5 (−17.9 to 23.1)0.61 (0.53 to 0.68)
Cambodia†Pregnant women201+30107.9±12.717 (56.7)111.7±10.213 (43.3)−3.8 (−17.5 to 9.9)0.77 (0.64 to 0.91)
The GambiaChildren30140798.6±8.8406 (99.7)97.8±16.6358 (88.0)0.8 (−30.5 to 32.3)0.28 (0.21 to 0.35)
6–11 months301104100.5±7.3104 (100)98.0±12.592 (88.5)2.5 (−22.1 to 27.2)0.24 (0.09 to 0.40)
12–23 months30130398.0±9.1302 (99.7)97.7±17.8266 (87.8)0.3 (−32.1 to 32.8)0.29 (0.20 to 0.37)
GhanaPregnant women201+223103.5±14.4143 (64.1)105.9±13.5197 (88.3)−2.4 (−21.1 to 16.4)0.75 (0.70 to 0.81)
LaosChildren3011487108.4±10.3799 (53.7)102.2±13.11099 (73.9)6.2 (−11.4 to 23.6)0.63 (0.60 to 0.65)
6–11 months301522107.7±10.6295 (56.0)99.0±11.9435 (83.0)8.7 (−19.7 to 37.3)0.12 (0.05 to 0.18)
12–23 months301957108.7±10.1501 (52.0)104.0±13.2660 (69.0)4.7 (−26.9 to 36.2)0.06 (0.003 to 0.12)
RwandaChildren201+131116.5±14.233 (25.1)117.9±13.331 (23.7)−1.4 (−18.2 to 15.6)0.81 (0.74 to 0.87)
6–11 months201+40110.3±12.919 (47.0)113.3±11.714 (35.0)−3.0 (−21.6 to 15.5)0.68 (0.52 to 0.85)
12–23 months201+39117.1±8.97 (18.0)118.4±10.79 (23.0)−1.3 (−17.1 to 14.6)0.66 (0.49 to 0.84)
24–59 months201+52120.9±16.87 (13.0)120.9±15.38 (15.0)0.0 (−16.0 to 15.8)0.87 (0.81 to 0.94)
  • Data were adjusted for smoking and altitude, and WHO cut-offs were applied for anaemia diagnosis (children 6–59 months <110 g/L; non-pregnant women above 15 years <120 g/L; pregnant women <110 g/L).29

  • *Cambodia dataset 1.10

  • †Cambodia dataset 2.47

  • ‡Cambodia dataset 3.14

  • Hb, haemoglobin.