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Table 5 Folic acid concentration and prevalence of folic acid 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

Serum folic acid concentration ng/mL

Prevalence of folic acid deficiency*

n

N

Serum folic acid concentration ng/mL

Prevalence of folic acid deficiency*

   

Mean

95% CI

%

95% CI

  

Mean

95% CI

%

95% CI

North

            

< 6 months

96

48932

102.7

51.0, 154.3

25.2

11.0, 47.9

97

601

124.8

105.0, 144.6

6.6

2.5, 16.3

6–11 months

298

176084

120.9

65.4, 176.3

14.5

3.2, 47.1

154

1169

120.5

98.6, 142.4

6.9

2.4, 18.3

12–23 months

314

196452

112.1

72.0, 152.2

13.4

2.7, 46.5

362

2640

125.8

110.8, 140.9

3.1

1.4, 6.5

Total North

708

421468

114.7

55.9, 173.4

15.2 a

3.3, 48.7

613

4410

124.3

109.2, 139.4

4.6 a

2.3, 9.0

Center

            

< 6 months

142

49708

131.4

100.6, 162.2

9.7

2.2, 33.5

72

2065

163.6

149.4, 177.8

0.0

---

6–11 months

291

119236

149.0

122.1, 175.9

4.3

1.4, 13.0

239

6278

168.1

142.3, 193.9

3.0

0.8, 11.0

12–23 months

333

159516

127.5

99.6, 155.4

6.4

1.7, 21.7

546

15902

147.1

113.6, 180.7

1.4

0.2, 7.3

Total Center

766

328460

135.9

103.8, 167.9

6.1 a

1.7, 20.2

857

24246

154.0

124.9, 183.0

1.7 a

0.4, 6.2

South

            

< 6 months

10

3973

118.7

58.3, 179.2

16.6

3.6, 51.7

25

6861

155.9

135.1, 176.7

0.0

---

6–11 months

202

62292

111.7

81.0, 142.4

8.6

1.6, 36.1

110

34142

134.4

108.5,160.3

5.8

2.4, 13.3

12–23 months

320

85651

111.4

88.4, 134.3

14.1

4.5, 36.1

228

68987

112.0

81.9, 142.1

12.6

3.0, 40.4

Total South

532

151917

111.7

82.8, 140.5

11.9 a

3.4, 34.2

363

109991

121.7

92.9, 150.5

9.7 a

2.5, 30.6

Mexico City &

            

< 6 months

45

23968

107.0

103.6, 110.3

5.4

4.1, 7.2

      

6–11 months

118

63812

121.3

108.7, 133.9

5.0

2.2, 11.0

      

12–23 months

137

70367

106.8

104.2, 109.5

5.6

0.7, 32.1

      

Total Mexico City &

300

158146

112.7

105.0, 120.3

5.1 a

2.6, 10.1

      

NATIONAL

            

< 6 months

293

126581

115.3

87.3, 143.2

15.1

5.8, 33.7

194

9528

155.6

139.9, 171.3

0.4

0.1, 1.4

6–11 months

909

421424

127.5

101.9, 153.2

9.3

3.2, 24.2

503

41589

139.1

119.7, 158.5

5.4

2.6, 11.0

12–23 months

1104

511986

116.0

98.0, 134.1

10.3

4.3, 22.5

1136

87530

118.8

95.2, 142.4

10.2

2.7, 32.0

TOTAL NATIONAL

2306

1059991

120.5

99.3, 141.7

10.4 b

4.0, 24.4

1833

138646

127.4

105.5, 149.4

8.1 b

2.4, 23.7

  1. N Population size (expanded sample)
  2. * ≤ 57 ng/mL in whole blood sample
  3. & Mexico City and periurban area
  4. a Comparing between regions within each regimen, RR = 0.458; IO = 0.046.
  5. b Comparing between regimens, national level, p = 0.720
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BMC Public Health

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