Table 3.

Bigrams in the MI journals corpus [3]. With the same ranking rule as in table 2.

Bigrams	Rank 2000–2005	Bigrams	Rank 2000–2005
Information system	1	Patient safety	75
Health care	2	Gene expression	87
Decision support	3	Medical error	92
Medical record	4	Digital assistant	94
Patient record	5	Personal digital	95
Medical informatics	6	Disease management
Clinical information	7	Open source
Health information	8	Provider order
Patient care	9	Clinical documentation
Support system	10	Clinical document
Electronic medical	11	Support vector
Information technology	12	Vector machine
Clinical practice	13	Expression datum
Medical information	14	Study objective
Knowledge base	15	Snomed ct
Hospital information	16