An IERI – International Educational Research Institute Journal
Table 9 Average paperTIMSS-eTIMSS difference scores by student subgroups—eighth grade
Subgroup | Valid cases | Average percent of students | Average difference score | |
|---|---|---|---|---|
Mathematics | Science | |||
Books in the home | ||||
 0–10 books | 1241 | 14 (0.5) | 14 (1.7) | 9 (1.7) |
 11–25 books | 2160 | 25 (0.6) | 12 (1.4) | 7 (1.3) |
 26–100 books | 2670 | 30 (0.5) | 13 (1.1) | 6 (1.2) |
 101–200 books | 1450 | 16 (0.5) | 15 (1.3) | 4 (1.3) |
 More than 200 books | 1454 | 16 (0.6) | 16 (1.7) | 9 (1.7) |
Gender | ||||
 Girls | 4794 | 53 (1.4) | 14 (1.0) | 9 (0.9) |
 Boys | 4308 | 48 (1.4) | 13 (1.5) | 6 (1.6) |
Digital self-efficacy | ||||
 Low | 379 | 4 (0.3) | 15 (3.1) | 8 (3.3) |
 Medium | 2302 | 26 (0.5) | 15 (1.4) | 8 (1.3) |
 High | 6286 | 70 (0.6) | 13 (1.1) | 6 (1.0) |