Table 3 

Comparison of hormone and growth factor levels among 6–8 year old Boston girls after 1 week milk consumption versus 1 week macronutrient substitute for milk (n = 28). 

Boston 
Mean 
50^{th }percentile 
75^{th }percentile 



Growth Hormone (ng/ml) 
After substitute 
0.89 ± 0.96 
0.41 
1.52 
After milk 
1.25 ± 1.67 
0.21 
1.62 

pvalue 
NA* 
0.63 
0.93 



IGFI (ng/ml) 
After substitute 
257.26 ± 69.12 
250.36 
294.71 
After milk 
270.60 ± 89.46 
250.20 
308.77 

pvalue 
0.35 
0.99 
0.68 



IGFI/IGFBP3 
After substitute 
0.057 ± 0.01 
0.057 
0.064 
After milk 
0.059 ± 0.02 
0.056 
0.068 

pvalue 
0.28 
0.72 
0.28 



For means, pvalues are from paired ttests. For 50^{th }and 75^{th }percentiles, pvalues are from unpaired quantile regression. *Ttest comparing mean GH is not appropriate, due to nonNormal GH distribution 

RichEdwards et al. Nutrition Journal 2007 6:28 doi:10.1186/14752891628 