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Table 3 Ferritin concentration and prevalence of iron deficiency, by region, age group, and care regimen

From: Prevalence of anemia and deficiency of iron, folic acid, and zinc in children younger than 2 years of age who use the health services provided by the Mexican Social Security Institute

Region/Age groups

Regular Regimen (RR)

IMSS-Oportunidades (IO)

 

n

N

Ferritin concentration μg/L

Prevalence of iron deficiency*

n

N

Ferritin concentration μg/L

Prevalence of iron deficiency*

   

Mean

95% CI

%

95% CI

  

Mean

95% CI

%

95% CI

North

            

< 6 months

84

40776

66.2

43.3, 89.0

4.3

2.6, 7.1

72

460

132.3

64.1, 200.5

6.1

2.3, 15.2

6–11 months

268

138802

30.6

25.2, 35.0

25.6

18.6, 34.2

139

1148

26.4

16.6, 36.2

36.9

30.1, 44.2

12–23 months

295

163476

16.1

12.8, 19.4

44.1

26.5, 63.3

332

3239

28.0

15.2, 40.8

43.3

32.6, 54.6

Total North

647

343054

27.9

15.3, 40.5

31.9 a

23.5, 41.6

543

4848

37.5

23.7, 51.4

38.2 a

31.7, 45.2

Center

            

< 6 months

147

55228

96.4

56.2, 136.6

4.6

1.5, 13.0

33

703

65.6

8.5, 122.7

13.8

8.1, 22.4

6–11 months

282

119726

30.1

25.2, 35.0

19.4

16.2, 23.0

138

3644

21.1

4.6, 37.5

49.7

30.4, 69.1

12–23 months

348

177310

18.2

13.4, 23.0

39.0

33.4, 44.8

322

9268

25.8

1.0, 58.3

48.1

37.5, 58.8

Total Center

777

352264

34.5

22.0, 47.0

26.8 a

22.7, 31.4

493

13615

26.6

1.0, 54.1

46.7 a

32.9, 61.1

South

            

< 6 months

25

14352

81.9

65.8, 97.9

21.0

13.5, 31.3

19

5007

50.4

33.1, 67.8

21.8

11.5, 37.5

6–11 months

239

79886

19.4

15.4, 23.4

37.3

30.4, 44.8

97

25128

59.3

24.0, 94.6

24.4

9.7, 49.1

12–23 months

401

123384

13.2

8.8, 17.5

54.4

43.8, 64.6

207

54992

35.8

16.7, 54.9

24.3

16.9, 33.6

Total South

665

217622

20.2

12.0, 27.9

46.2 a

37.4, 55.3

323

85127

43.6

18.6, 68.6

24.2 a

16.0, 34.7

Mexico City &

            

< 6 months

64

30872

87.9

70.5, 105.2

7.2

4.6, 11.2

      

6–11 months

152

77977

32.2

28.9, 35.6

28.8

17.7, 43.4

      

12–23 months

195

88543

26.4

16.2, 36.5

36.7

29.5, 44.4

      

Total Mexico City &

411

197392

38.3

25.8, 50.8

28.9 a

19.1, 41.1

      

NATIONAL

            

< 6 months

320

141228

84.3

63.2, 105.5

6.8

4.3, 10.9

124

6170

58.3

41.2, 75.4

19.7

11.4, 31.8

6–11 months

941

416391

28.6

23.9, 33.3

26.7

22.8, 30.9

374

29920

53.4

21.7, 85.1

28.0

13.2, 49.7

12–23 months

1239

552713

17.8

15.1, 20.4

43.6

37.1, 50.2

861

67500

34.0

17.9, 50.2

28.4

22.3, 35.5

TOTAL NATIONAL

2500

1110332

30.3

24.2, 36.4

32.6 b

28.8, 36.6

1359

100230

41.1

20.0, 62.1

27.8 b

20.2, 36.9

  1. N Population size (expanded sample)
  2. * Ferritin <10 μg/L
  3. & Mexico City and periurban area
  4. a Comparing between regions within each regimen, RR = 0.015; IO = 0.007.
  5. b Comparing between regimens, national level, p = 0.287
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