Table 1 Iron deficiency (ID) and ID anemia (IDA) by demographic information for 856 participants across 5 sitesa

From: Detection of iron deficiency in children with Down syndrome

 

Normal

IDb

IDAc

P value

Sex

n = 785

n = 46

n = 10

0.199

 Female

447 (56.9%)

28 (60.9%)

3 (30%)

 

 Male

338 (43.1%)

18 (39.1%)

7 (70%)

 

Race

n = 766

n = 42

n = 10

0.880

 Caucasian

689 (89.95%)

38 (90.48%)

8 (80%)

 

 African American

46 (6%)

3 (7.14%)

1 (10%)

 

 Asian

20 (2.61%)

1 (2.38%)

1 (10%)

 

 Native American

2 (0.26%)

0

0

 

 Other

9 (1.17%)

0

0

 

Ethnicity

n = 696

n = 42

n = 8

0.707

 Hispanic

22 (3.1%)

2 (4.7%)

0

 

 Non-Hispanic

674 (93.9%)

40 (93%)

8 (100%)

 

Age

n = 800

n = 46

n = 10

0.002

 12–36 months

157 (19.63%)

18 (39.1%)

3 (30%)

 

 3–5 years

117 (14.63%)

10 (21.74%)

0 (0%)

 

 5–11 years

294 (36.75%)

8 (17.39%)

2 (20%)

 

 11–19 years

185 (23.13%)

10 (21.74%)

3 (30%)

 

 >19 years

47 (5.88%)

0 (0%)

2 (20%)

 

Mean (year), SD

8.78 ± 6.53

6.1 ± 5.3

12.94 ± 12/62

 

Median (year)

8

4

11

 
  1. RDW red cell distribution width, TS transferrin saturation.
  2. aThe total number of subjects varies by demographic variable due to missing data from some participants.
  3. bID  =  two abnormal biochemical markers of iron (low ferritin and low TS), or one abnormal biochemical marker plus elevated RDW.
  4. cIDA  =  ID plus a low hemoglobin concentration.