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Table 2 Prevalence of anemia, prevalence ratio (PR) and respective confidence interval at 95 % for selected variables amongst children from public elementary school in Maceió, Alagoas, Brazil, 2013

From: Prevalence of and factors associated with anemia in school children from Maceió, northeastern Brazil

Variables

Total n (%)

Anemia n (%)

PR (CI95 %)

p

Sex

  

 Female

461 (51.9)

39 (8.5)

1

0.019*

 Male

427 (48.1)

57 (13.3)

1.57 (1.07; 2.32)

Duration of exclusive breastfeeding

 ≥ 6 months

156 (51.0)

16 (10.3)

1

0.786

 < 6 months

150 (49.0)

14 (9.3)

0.91 (0.45; 1.80)

Prenatal care

 Yes

481 (84.4)

47 (9.7)

1

0.095

 No

89 (15.6)

14 (15.7)

1.61 (0.92; 2.79)

Employment status of father

 Employed (formal / informal)

294 (71.2)

23 (7.8)

1

0.077

 Unemployed

119 (28.8)

16 (13.5)

1.71 (0.94; 3.13)

Employment status of mother

 Unemployed

328 (60.4)

34 (10.4)

1

0.769

 Employed (formal / informal)

215 (39.6)

24 (11.2)

1.07 (0.63; 1.83)

Number of household members

 < 6

375 (74.8)

33 (8.8)

1

0.026*

 ≥ 6

126 (25.1)

20 (15.9)

1.80 (1.07; 3.02)

Per capita income

 >2.00 dollars/day

243 (60.3)

20 (8.2)

1

0.161

 ≤2.00 dollars/day

160 (39.7)

20 (12.5)

1.51 (0.84; 2.73)

Recipient of government benefits

 No

127 (23.1)

14 (11.0)

1

0.795

 Yes

411 (76.4)

42 (10.2)

0.92 (0.52; 1.64)

Height-for-age

 ≥ −2 z (eutrophic)

800 (97.5)

83 (10.4)

1

0.957

 < −2 z (stunted)

20 (2.5)

2 (10. 0)

0.96 (0.25; 3.64)

BMI-for-age

 ≤ 2 z (eutrophic)

704 (89.4)

76 (10.8)

1

0.088

 > 2 z (obese)

83 (10.5)

4 (4.8)

0.44 (0.16; 1.18)

Consumption of meat, fish or poultry

 ≥1 portions

773 (87.2)

84 (10.9)

1

0.937

 0 portions

113 (12.8)

12 (10.6)

0.97 (0.55; 1.71)

Consumption of fruits/fruit juices

 ≥3 portions

80 (9.0)

4 (5.0)

1

0.078

 <3 portions

805 (91.0)

92 (11.4)

2.28 (0.86; 6.05)

Consumption of fruits/fruit juices

 ≥2 portions

242 (27.3)

15 (6.2)

1

0.006*

 <2 portions

643 (72.6)

81 (12.6)

2.03 (1.19; 3.45)

Consumption of coffee

 0 portions

412 (46.4)

36 (8.7)

1

0.064

 ≥ 1 portions

476 (53,6)

60 (12,6)

1,89 (1,00; 1,4)

  1. *indicates statistical significance (p < 0.05); PR prevalence ratio, CI95 % confidence interval 95 %
  2. N.B. the sum of the total number varies because of data gaps