I need to compare the diagnosis of two methods vs a gold standard (all is paired data). The results are categorical variables classified as positive, negative and inconclusive.
How do you deal with the inconclusive category? In a first attempt, I ignored it and computed the sensitivity and specificity with only true positive and true negatives, but that does not seem correct to me as does not give relevant information to choose the best method.
How do you deal with these cases?