Table 2 Pairwise agreement among the authors. The numbers presented in rows 3–7 were calculated for each pair of authors, as: (# of annotation agreements)/(# of fragments mutually annotated) but only included those sentences on which the pair of authors agreed on the number of fragments (such agreement on fragment number as a percentage is given in row 2).

From: New directions in biomedical text annotation: definitions, guidelines and corpus construction