Table 1

Prevalence of anaemia by sociodemographics among 6656 adults age ≥60 years from the China Health and Retirement Longitudinal Study, 2015

Demographic characteristics of the sample (%)Prevalence of anaemia % (95% CI)
Total20.6 (19.4 to 21.9)
Age, years***
 60–6436.314.9 (13.3 to 16.7)
 65–6927.917.4 (15.4 to 19.7)
 70–7418.123.0 (20.2 to 26.2)
 75–7910.830.5 (26.1 to 35.2)
 80+6.836.0 (30.3 to 42.0)
Sex***
 Male49.518.5 (16.8 to 20.2)
 Female50.522.8 (21.0 to 24.6)
Residence***
 Rural75.724.7 (23.3 to 26.1)
 Urban24.113.8 (11.9 to 16.0)
Education***
 Illiterate29.728.2 (25.8 to 30.7)
 Can read29.321.5 (19.3 to 24.0)
 Elementary school22.419.5 (17.0 to 22.2)
 Middle school12.614.4 (11.9 to 17.3)
 High school or above5.49.2 (6.0 to 13.9)
Marital status***
 Married/living together79.818.8 (17.5 to 20.2)
 Others20.227.2 (24.2 to 30.3)
Body mass index, kg/m2***
 <18.57.540.1 (35.3 to 45.2)
 18.5–23.948.925.6 (23.7 to 27.5)
 24.0–27.929.313.3 (11.5 to 15.2)
 ≥28.0138.0 (6.1 to 10.6)
  • The number of participants is unweighted. Percentage estimates are weighted. P values were obtained by t-test for continuous variables and χ2 test for categorical variables.

  • *P<0.05, **p<0.01, ***p<0.001, for comparing prevalence of anaemia by each factor.