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Table 4 Association between the prevalence of anemia and sociodemographic characteristics among women of reproductive age after controlling the chronic diseases

From: Prevalence of anemia and sociodemographic characteristics among pregnant and non-pregnant women in southwest China: a longitudinal observational study

 

aORa

95%CIa

P

All participants

 Stage

  Non-pregnancy

1.00

-

-

-

  First trimester

1.33

1.32

1.35

< 0.001

  Third trimester

0.76

0.72

0.80

< 0.001

 Age group, years

  18–20

1.31

1.28

1.34

< 0.001

  21–25

1.02

1.00

1.03

0.026

  26–30

1.00

-

-

-

  31–35

1.03

1.00

1.05

0.015

  > 35

1.05

1.02

1.07

< 0.001

 Occupation

  Worker

1.00

-

-

-

  Farmer

1.36

1.33

1.40

< 0.001

  Others

1.01

0.97

1.05

0.544

 Ethnic

  Han

1.00

-

-

-

  Yi

1.18

1.16

1.21

< 0.001

  Hani

1.72

1.66

1.77

< 0.001

  Miao

1.32

1.27

1.37

< 0.001

  Others

1.40

1.38

1.43

< 0.001

  1. aMultivariate model adjusted for pregnancy stage, age, occupation, ethnic, investigation year, history of childbirth and chronic diseases among women of reproductive age
  2. The stage was taken as the reference by non-pregnancy, the age was taken as the reference by the age group of 26–30 years, the occupation was taken as the reference by workers, the ethnic was taken as the reference by the Han