Table 5 Factors associated with children undernutrition in multivariate analysis

Birth weight

  <2500 g

1.24

<0.001^*

3.44

2.23-5.31

1.05

<0.001^*

2.86

1.67-4.90

0.80

0.007^*

2.22

1.24-3.98

  2500-3999 g

1.00

1.00

1.00

  ≥4000 g

-0.73

0.060

0.48

0.22-1.03

-1.53

0.09^*

0.22

0.07-0.68

-0.84

0.047^*

0.43

0.19-0.99

Maternal gestational weight gain (kg)

  <10.00

0.55

0.035^*

1.74

1.04-2.90

0.60

0.041^*

1.83

1.03-3.26

  10.00-14.99

0.22

0.372

1.25

0.77-2.03

0.51

0.066

1.67

0.97-2.87

  15.00-19.99

0.39

0.134

1.48

0.89-2.45

0.49

0.091

1.64

0.92-2.91

  ≥20.00

1.00

1.00

Ethnicity of caregivers

  Han

1.00

1.00

1.00

  Minorities

0.35

0.074

1.42

0.97-2.07

0.68

<0.001^*

1.97

1.35-2.86

1.24

<0.001^*

3.45

2.50-4.77

  Education level of caregivers

-0.23

0.001^*

0.80

0.69-0.92

-0.22

0.004^*

0.80

0.69-0.93

-0.22

0.003^*

0.81

0.70 -0.93

  Family size

0.23

0.026^*

1.26

1.03-1.55

0.21

0.048*

1.23

1.01-1.50

  Family food expenditure (Yuan/year)

-0.16

0.041^*

0.85

0.73-0.99

-0.15

0.048^*

0.86

0.73-0.98

  Constant

-2.77

<0.001^*

<0.001^*

-3.32

<0.001^*

0.04

-4.54

<0.001^*

0.01