Table 2. Simulated example of a multilevel dataset with one row per test score.
study indicates study number; ID indicates participant number; age, gender and education are background variables; z(1), z(2) and z(3) are indicator variables; test indicates test number and score indicates the score on the test with that number.
| study | ID | age | gender | education | z(1) | z(2) | z(3) | test | score |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | −2.21 | −1 | 3.68 | 1 | 0 | 0 | 1 | 0.08 |
| 1 | 1 | −2.21 | −1 | 3.68 | 0 | 1 | 0 | 2 | 1.59 |
| 1 | 2 | 22.79 | 1 | −0.32 | 1 | 0 | 0 | 1 | 0.72 |
| 1 | 2 | 22.79 | 1 | −0.32 | 0 | 1 | 0 | 2 | 2.06 |
| 2 | 1 | −25.21 | 1 | 0.68 | 0 | 1 | 0 | 2 | 0.19 |
| 2 | 1 | −25.21 | 1 | 0.68 | 0 | 0 | 1 | 3 | 1.26 |
| 2 | 2 | −11.21 | 1 | 1.68 | 0 | 1 | 0 | 2 | 0.04 |
| 2 | 2 | −11.21 | 1 | 1.68 | 0 | 0 | 1 | 3 | −0.29 |
| 2 | 3 | 3.79 | −1 | 0.68 | 0 | 1 | 0 | 2 | −0.65 |
| 2 | 3 | 3.79 | −1 | 0.68 | 0 | 0 | 1 | 3 | −0.51 |