An IERI – International Educational Research Institute Journal
 |  | Total | S1 | S2 | S3 |
---|---|---|---|---|---|
n | Â | 63,924 | 5,921 | 3,103 | 3,278 |
Gender | % female | 51.47 | 51.11 | 51.14 | 51.04 |
Age (in years) | M | 39.68 | 35.31 | 35.91 | 36.72 |
 | SD | 14.61 | 13.57 | 13.90 | 13.79 |
Education level | % low | 21.53 | 15.54 | 16.27 | 14.55 |
 | % medium | 46.82 | 44.18 | 44.89 | 45.18 |
 | % high | 31.66 | 40.28 | 38.83 | 40.27 |
Reading skill (literacy) | M | 0.00 | - | 0.13 | 0.16 |
Evaluation skill (item u06a) | MÂ Determining usefulness | 3.92 | 4.10 | 4.05 | - |
MÂ Identifying deficiencies | 1.65 | 1.76 | 1.74 | - | |
Item success rate | u06b | 0.55 | 0.57 | 0.54 | - |
 | u07 | 0.52 | 0.58 | - | 0.50 |