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Table 2 Effects of different variables on haemoglobin status of pregnant women expressed as regression coefficients (β) with 95% CI

From: Haemoglobin status and predictors of anaemia among pregnant women in Mpigi, Uganda

  

Crude analysis

 

Adjusted analysis

Characteristic

β (95% CI)

P-value

β (95% CI)

P- value*

Age in years

    

 Below 20

-0.21 (-0.36, -0.06)

0.006

-0.19 (-0.36, -0.02)

0.07

 20-24

Ref

 

 25-29

0.11 (-0.03, 0.24)

0.10 (-0.06, 0.25)

 30-34

0.02 (-0.20, 0.24)

-0.03 (-0.28, 0.23)

 ≥35

-0.03 (-.26, 0.19)

-0.05 (-0.34, 0.23)

Parity

    

 Nulliparous

-0.20 (-0.37, -0.03)

0.08

-0.14 (-0.33, 0.06)

0.38

 1

-0.12 (-0.30, 0.05)

-0.12 (-0.30, 0.05)

 2

Ref

Ref

 3

0.05 (-0.16, 0.26)

0.05 (-0.16, 0.26)

 4

-0.10 (-0.33, 0.12)

-0.12 (-0.35, 0.12)

 Para 5+

-0.01 (-0.22, 0.20)

0.03 (-0.22, 0.29)

Timing of 1st antenatal visit

   

 1st trimester

Ref

0.03

Ref

0.05

 2nd trimester

0.24 (0.06, 0.43)

0.21 (0.03, 0.40)

 3rd trimester

0.20 (0.00, 0.40)

0.26 (0.04, 0.48)

Gestational age at enrolment

0.05 (0.03, 0.06)

<0.001

0.03 (0.01, 0.05)

<0.001

Iron supplements (number of tablets)

   

 None

Ref

<0.001

 

<0.001

 1-30

0.27 (0.15, 0.39)

0.32 (0.19, 0.45)

 31-60

0.40 (0.22, 0.58)

0.37 (0.17, 0.58)

 61+

0.47 (0.23, 0.71)

0.53 (0.27, 0.80)

Doses of antihelminthics taken

   

 Zero

-0.14 (-0.30, 0.01)

0.15

0.12 (-0.11, 0.35)

0.54

 One

-0.10 (-0.22, 0.03)

0.09 (-0.10, 0.28)

 Two

Ref

 

Doses of antimalarial prophylaxis (IPT)

   

 Zero

-0.21 (-0.37, -0.05)

0.004

0.03 (-0.20, 0.25)

0.20

 One

-0.18 (-0.30, -0.06)

-0.12 (-0.30, 0.06)

 Two

Ref

 

Episodes of malaria

    

 None

Ref

0.02

 

0.02

 One

-0.13 (-0.26, 0.003)

-0.14 (-0.27, -0.01)

 Two

-0.29 (-0.48, -0.10)

-0.29 (-0.47, -0.10)

 Three

-0.01 (-0.30, 0.28)

0.01 (-0.29, 0.29)

 Four +

-0.19 (-0.64, 0.26)

-0.16 (-0.60, 0.29)

HIV Sero-status

    

 Negative

Ref

<0.001

 

<0.001

 Positive

-0.54 (-0.74, -0.33)

 

-0.63 (-0.85, -0.42)

  1. HIV: Human Immunodeficiency Virus; ARVs: Antiretroviral treatment.
  2. *p-values are from the F-test after adjusting for variables that had a univariate p-value <0.2 (age, parity timing of first ANC visit, gestational age at enrolment, iron supplementation, antihelminthics, IPT malaria & HIV infection).