Screening for Anemia and Iron Deficiency in the Adult Portuguese Population
Table 1
Summary of the demographic characteristics and concentrations of hemoglobin and ferritin of the study participants.
Group
Participants, N = 11,030
n
Age, mean (SD) (years)
Hb, mean (SD) (g/dL)
Ferritin, median (Q1–Q3) (ng/mL)
Men
2845
40.90 (16.86)
13.62 (1.65)
50.82 (26.60–86.80)
Nonpregnant women
Total
7060
45.94 (16.02)
12.01 (1.54)
21.28 (9.00–40.46)
≤51 years
4525
36.02 (9.04)
11.94 (1.53)
17.78 (9.00–33.46)
>51 years
2535
63.66 (8.91)
12.14 (1.55)
29.96 (14.28–56.00)
Pregnant women
Total
1125
30.89 (4.84)
11.15 (1.41)
17.38 (9.00–30.94)
1st trimester
41
30.44 (5.26)
11.74 (1.40)
29.60 (9.00–45.49)
2nd trimester
633
30.67 (4.75)
11.16 (1.39)
20.44 (9.00–36.12)
3rd trimester
451
31.24 (4.90)
11.09 (1.44)
10.80 (9.00–23.94)
18–26 years
203
23.90 (2.08)
11.23 (1.51)
16.80 (9.00–29.12)
27–35 years
723
30.87 (2.51)
11.13 (1.40)
17.78 (9.00–31.78)
36–44 years
199
38.07 (1.89)
11.14 (1.36)
16.94 (9.00–30.94)
Nonpregnant women in fertile agea
Total
3500
32.54 (7.14)
11.96 (1.52)
16.94 (9.00–32.20)
18–26 years
870
23.24 (2.37)
11.95 (1.53)
14.10 (9.00–27.44)
27–35 years
1285
30.91 (2.61)
12.01 (1.47)
17.78 (9.00–32.62)
36–44 years
1345
40.13 (2.53)
11.92 (1.56)
17.78 (9.00–35.28)
Hb, hemoglobin; N, total number of participants; n, number of participants per group; Q1, 1st quartile; Q3, 3rd quartile; SD, standard deviation. aSubgroups of nonpregnant women matched to the same age groups of the pregnant women.
