Feasibility of Using the Image1 S Enhancement System
A total of 1110 responses were obtained from 30 participants after they observed the paired images in 37 respective cases. A cross tabulation analysis of the two categorical variables was performed for comparison of the qualitative evaluation results of the participants and the authors. The analysis revealed that the qualitative evaluation of the participants and the authors were significantly close to each other (χ2[1]=462.92). The Cohen’s kappa value was 0.63, indicating a substantial agreement between the qualitative evaluations by the participants and the authors. The results showed 96.2% congruence between the participants’ and the authors’ observations with respect to the perpendicular lesions, and 61.2% congruence with respect to the longitudinal lesions. Inter-rater reliability between participants was tested by ICC, and the results of the test showed significant reliability of the participant observation data (ICC(2, 30)=0.96, 95% CI [0.94, 0.98]).
The correlation between the participants’ accuracy and their years of work was non-significant (r = 0.18, p= 0.331), thus, previous work (clinical) experience had no effect on the qualitative evaluation.