Skip to main content

Table 2 Median, 25–75 percentiles and proportions of SF, ST and their ratio in late pregnancy

From: Iron deficiency in late pregnancy and its associations with birth outcomes in Chinese pregnant women: a retrospective cohort study

  N 25th percentile Median 75th percentile Percent deficient a
All women (N = 11,581)
 SF (μg/L) 11,569 8.3 11.6 20.2 51.82
 ST (g/L) 11,576 3.64 4.09 4.58 54.43
 ST/SF ratio log10 transform 11,564 5.28 5.55 5.72 53.9
Women with hsCRP5 ≤ mg/L (N = 8597)
 SF (μg/L) 8591 8 11.2 19.2 54.27
 ST (g/L) 8594 3.67 4.11 4.62 56.23
 ST/SF ratio log10 transform 8588 5.3 5.57 5.74 56.29
  1. a Percent deficient was defined as SF < 12 μg/L, ST >  4 g/L and ST/SF ratio log10 transform > 5.52
  2. Abbreviations: SF serum ferritin, ST serum transferrin, hsCRP high sensitivity C-reactive protein