Table 6 Difficulty and Discrimination indexes of the items of the CVS module exam in (2009/2010) and (2010/2011)
| Â | 2009/2010N= 60N % | 2010/2011N= 60N % | Test of significance |
|---|---|---|---|
Difficulty index | |||
Very easy (Conditionally acceptance) (0.9-1) | 22 (36.6) | 7 (11.7) | Chi-square test with liner trends X2= 16.31 P=0.009** |
Easy (0.70-0.9) | 30 (50) | 29 (48.3) | Â |
Excellent (0.3-0.7) | 8 (14.4) | 22 (36.7) | Â |
Moderate (0.15-0.30) | - | 2 (3.3) | Â |
Too difficult (≤0.15) | - | - |  |
Discrimination index | Â | Â | Â |
Very good item (≥ 0.30) | 8 (13.3) | 42 (70) | Chi-square test with liner trends X2= 44.6 P<0.001** |
Reasonably good (0.20-0.29) | 29 (48.3) | 8 (13.3) | Â |
Marginal item (0.09-0.20) | 11 (18.3) | 9 (15) | Â |
Poor (zero) | 10 (16.6) | 1 (1.7) | Â |
Unaccepted discrimination (Negative) | 2 (3.3) | - | Â |