Skip to main content

Table 3 Accuracy of erythrogram and ferritin to predict the responsiveness to iron-therapy in 139 pregnant women

From: Could the erythrocyte indices or serum ferritin predict the therapeutic response to a trial with oral iron during pregnancy? Results from the Accuracy study for Maternal Anaemia diagnosis (AMA)

Index-tests

Sensitivity

Specificity

Predictive Value +

Predictive Value -

% (CI)

% (CI)

% (CI)

% (CI)

Red blood cell count

(<3.8•1012cel/L)

86.5 (72.0;94.1)

22.5 (15.5;31.6)

28.8 (21.2;37.8)

82.1 (64.4;92.1)

HTC

(<32.0 %)

59.5 (43.5;73.6)

47.1 (37.7;56.7)

28.9 (19.9;36.9)

76.2 (64.4;85.0)

Hb

(<10.5 g/dL)

54.0 (38.4;68.9)

52.9 (43.3;68.9)

29.4 (19.9;41.1)

76.1 (64.9;84.5)

MCV

(<81.0 fL)

18.9 (9.5;34.2)

86.3 (78.2;91.6)

33.3 (17.2;54.6)

74.6 (66.0;81.6)

MCH

(<26.0 pg)

18.9 (9.5;34.2)

87.2 (79.4;92.4)

35.0 (18.1;56.7)

74.8 (66.3;81.7)

MCHC

(<32.0 g/dL)

32.4 (19.6;48.5)

83.3 (74.9;89.3)

41.4 (25.5;59.3)

77.3 (68.6;84.1)

RDW

21.6 (11.4;37.2)

75.5 (66.3;82.8)

24.2 (12.8;41.0)

72.6 (63.5;80.2)

(>14.0 %)

    

Reticulocyte (n = 122)

(<1.0 %)

5.7 (1.58;18.6)

94.2 (87.2;97.5)

28.6 (8.2;64.1)

71.3 (62.4;78.8)

Serum ferritin (n = 132)

(<12.0 ng/mL)

34.3 (20.8;50.8)

74.2 (64.7;81.9)

32.4 (19.6;48.5)

75.8 (66.3;83.3)

  1. CI 95 % Confidence Interval, HTC (haematocrit), Hb (haemoglobin concentration), MCV (mean corpuscular volume), MCH (mean corpuscular haemoglobin), MCHC (mean corpuscular haemoglobin concentration), RDW (red blood cells distribution width)