Table 3 Anemia prevalence and mean hemoglobin levels of Indigenous women according to individual characteristics. First National Survey of Indigenous People’s Health and Nutrition, Brazil, 2008–2009

Age group (years)

0.250

0.021

  14–19

1691

Reference (1)

Reference (0)

  20–34

3468

0.95 (0.82; 1.09)

0.05 (-0.07; 0.16)

   ≥ 35

1492

0.88 (0.75; 1.03)

0.16 (0.03; 0.29)

Schooling (years)

0.302

0.059

  0

998

Reference (1)

Reference (0)

  1–4

2597

0.97 (0.81; 1.16)

0.01 (-0.16; 0.18)

  5–9

1811

0.89 (0.74; 1.08)

0.13 (-0.06; 0.32)

   ≥ 10

1197

0.80 (0.61; 1.05)

0.19 (-0.05; 0.42)

BMI

<0.001

<0.001

  Underweight

183

0.78 (0.51; 1.21)

0.14 (-0.15; 0.43)

  Normal weight

3618

Reference (1)

Reference (0)

  Overweight

1977

0.78 (0.67; 0.92)

0.14 (0.02; 0.26)

  Obese

845

0.62 (0.50; 0.77)

0.39 (0.23; 0.55)

Parity

6621

1.03 (1.00; 1.07)

0.060

-0.03 (-0.06; 0.00)

0.018

Malaria treatment

<0.001

<0.001

  Yes

568

Reference (1)

Reference (0)

  No

6051

0.43 (0.29; 0.62)

0.62 (0.29; 0.96)

Current pregnancy

0.277

<0.001

  Yes

646

Reference (1)

Reference (0)

  No

5720

0.89 (0.73; 1.10)

1.07 (0.93; 1.20)