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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: J Biomed Inform. 2017 Jul 16;73:30–42. doi: 10.1016/j.jbi.2017.07.013

Table 1.

The distribution of the drug ingredients in exactly one ingredient group based on their number of parent ingredient groups

# of parent ingredient groups # of drug ingredients Percentage (Column 2/1851)
0 1 0.05%
1 1136 61.37%
2 569 30.74%
3 118 6.37%
4 25 1.35%
5 2 0.11%
Total: 1851 100.00%