Table 1.

Examples of large disagreement in the LIDC dataset with regard to spiculation ratings and the number of observations and nodules effected

Type of disagreement	Criteria	No. of nodules	No. of observations
Outlier for nodule identification	Only one rater for nodule	842	842
Outlier rating of 1	Rating equal to 1 and all other ratings are 4 and 5	54	54
Outlier rating of 5	Rating is equal to 5, and all other ratings equal to 1 or 2	101	101
Complete disagreement on ratings	Four ratings equally split with two ratings of 1 and two ratings of 5	8	56