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Table 2 Change in 10 year-old Mongolian children's hormone and growth factor concentrations before and after one month of drinking 710 ml of American UHT whole milk daily.

From: Milk consumption and the prepubertal somatotropic axis

Mongolia   Mean 50th percentile 75th percentile
Growth Hormone (ng/ml) Pre 2.38 ± 3.27 1.23 2.60
  Post 3.42 ± 4.07 2.14 5.28
  p-value NA* 0.23 0.005
IGF-I (ng/ml) Pre 290.93 ± 93.98 270.70 346.95
  Post 358.34 ± 125.62 333.56 449.29
  p-value <0.0001 0.04 0.03
IGF-I/IGFBP-3 Pre 0.064 ± 0.016 0.062 0.068
  Post 0.073 ± 0.019 0.072 0.082
  p-value <0.0001 0.009 0.007
  1. For means, p-values are from paired t-tests. For 50th and 75th percentiles, p-values are from unpaired quantile regression.
  2. * T-test comparing mean GH not appropriate, due to non-Normal GH distribution.