Table S3.
Statistics for comparison between early-adopted and later-adopted subgroups on six control variables and on the childhood-vocabulary test
| Variable | Statistical test | Descriptive statistic | |||
| Early-adopted subgroup | Later-adopted subgroup | ||||
| N (%) | Mean (SD) | N (%) | Mean (SD) | ||
| Age (y) | t(27) = −4.02, P < 0.001 | 14 | 28.4 (4.3) | 15 | 34.7 (4.2) |
| Education* | χ2(3) = 3.37, P = 0.34 | ||||
| VBO | 0 | — | 2 (13) | — | |
| MAVO | 4 (29) | — | 4 (27) | — | |
| HAVO | 6 (43) | — | 3 (20) | — | |
| VWO | 4 (29) | — | 6 (40) | — | |
| Visit | χ2(1) = 0.91, P = 0.34 | ||||
| Yes | 9 (64) | — | 7 (47) | — | |
| No | 5 (36) | — | 8 (53) | — | |
| Visit ratio | t(27) = −0.05, P = 0.96 | 14 | 0.01 (0.02) | 15 | 0.01 (0.02) |
| Language | t(27) = 0.14, P = 0.89 | 14 | 2.9 (1.0) | 15 | 2.8 (1.1) |
| Sex | χ2(1) = 5.66, P < 0.05 | ||||
| Female | 13 (93) | — | 8 (53) | — | |
| Male | 1 (7) | — | 7 (47) | — | |
| Childhood-vocabulary | t(27) = 1.15, P = 0.26 | 14 | 0.50 (0.14) | 15 | 0.43 (0.19) |
*
From lowest to highest level in the Dutch high school system.