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The CAR1 scores comparison in DIF analysis regarding gender and age group.
| Components | Boys/N1 | Girls/N | p 2 | infant | kindergarten | primary school | junior high school | p | Bonferroni t-test3 |
|---|---|---|---|---|---|---|---|---|---|
| 675 | 2,673 | 1,416 | 1,506 | 406 | 20 | ||||
| CARS1 sum | 31.46 ± 5.28 | 31.74 ± 5.36 | 0.65 | 32.13 ± 4.92 | 31.85 ± 5.11 | 29.55 ± 6.89 | 30.8 ± 5.69 | 0.00 | 1,2 > 3 |
1N, sample size; 2p, p value; 3 1, infant, 2, kindergarten, 3, primary school, 4, junior high school.
