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Table 3 Multivariable linear regression model for association between CHC status and serum ferritin

From: Iron deficiency among low income Canadian toddlers: a cross-sectional feasibility study in a Community Health Centre and non-Community Health Centre sites

Predictor

β (log)

95% CI

Change in serum ferritin, %

Change in median serum ferritin

P

μg/l

95% CI

CHC, yes

0.17

−0.10, −0.45

19.12

4.78

−2.46, 14.34

0.22

Age, mo

−0.0006

−0.01, 0.01

0.06

0.14

−0.15, 0.18

0.87

Female sex

0.08

0.003, 0.16

8.01

2.00

0.07, 4.25

0.06

Income

 $0–29,999

−0.23

−0.41, − 0.04

−20.17

−5.04

−8.48, − 0.89

0.02*

 $30,000-79,999

0.02

−0.11, 0.15

1.97

0.49

−2.69, 4.12

0.77

 ≥$80,000 (Reference)

Maternal education (Post-secondary, no)

0.08

−0.09, 0.24

7.93

1.98

02.10, 6.79

0.36

zBMI, unit

−0.07

− 0.10,-0.03

−6.49

−1.62

−2.49, 0.71

0.0006*

Breastfeeding duration, mo

−0.01

−0.02, − 0.01

− 1.46

−0.37

− 0.54, − 0.20

<.0001*

Milk consumption (>  2 cups daily)

− 0.11

−0.20, − 0.02

− 10.37

−2.59

−4.49, − 0.52

0.02*

Meat / fish consumption daily

0.01

− 0.04, 0.06

0.94

0.24

− 0.91, 1.44

0.69

CRP (mg/L)

0.07

0.05, 0.10

7.69

1.92

1.17, 2.70

< 0.0001*

Iron/ multivitamin supplementation

0.04

−0.16, 0.25

4.50

1.13

−3.80, 7.20

0.68

  1. zBMI indicates body mass index z score; CI indicates confidence interval; CRP indicates C-reactive protein
  2. Adjusted β estimates are reported to 2 decimal points for statistical precision. Negative values indicate a decrease in median serum ferritin, positive values indicate an increase in median serum ferritin. *indicates statistically significant effects