Table 4.

Statistics of different types of SNP-phenotype association candidates in the SNPPhenA corpus

Item	Number	Percentage (%)
Total SNP-phenotype association candidates	1300	100
Candidate with at least one negation cue	218	16.8
Candidates with only one negation cue	188	14.5
Candidates with clause connectors	823	63.8
Candidates without clause connector	470	36.2
Weak degree of confidence candidates	515	39.6
Moderate degree of confidence candidates	124	9.5
Strong degree of confidence positive candidates	233	17.9