Of the top 10 most used reactions in the <i>R</i>₁₉ network and carbon-only KEGG network, there are five equivalent reactions that appear in both.

Recognizing that 74 of the 90 possible reactions from the R19 set are found in the 631 carbon-only reactions from KEGG, we can use the Spearman rank-correlation to find that this has a correlation value of 0.54 with p-value 8·10−7.我们注意到，R19反应集（R19 set）的90种潜在反应中，有74种存在于KEGG（京都基因与基因组百科全书，Kyoto Encyclopedia of Genes and Genomes）的631种仅含碳反应内；通过斯皮尔曼等级相关系数（Spearman rank-correlation）分析，可得到相关系数为0.54，对应的p值（p-value）为8×10⁻⁷。