Numeracy skill level of patients has great influence on their preferences and priorities for the treatment options concerning their healthcare. There have been different methods for assessment of numeracy skill in healthcare domain. In our previous research we proposed a new Confidence-based Patient Numeracy Assessment (C-PNA) method. In this paper we compare it with other numeracy assessment methods in terms of newly proposed quality characteristics. The results reveal that our confidence-based numeracy assessment method outperforms the non-confidence assessment method in terms of objective and subjective quality characteristics of the newly proposed quality model.