Categories Sensitivity Specificity Significance values
A 77 69 Sensitivity of Group B and C is significantly higher 0.051 as compared to group A (p=0.051 and 0.000)’ Sensitivity of C is also significantly high as compared to B (p=0.000) Specificity of Group B is not significant (0.326) as compared to group A Specificity of C is also significantly high as compared to A and B (p=0.009 and 0.002)
B 85 65
C 100 82.5
Note: While specificity of three groups is non significant 0.278, 0.236 and 0.316 respectively
Table 7: Comparison of Sensitivity and specificity of all systems Group A, B and C.