Table 2.
Participant characteristics and comparison statistic for children and adults with fragile X (FXS), Cornelia de Lange (CdLS), and Rubinstein-Taybi (RTS) syndromes
| FXS | CdLS | RTS | p value | |
|---|---|---|---|---|
| (n = 15) | (n = 14) | (n = 19) | ||
| CA mean (SD) | 24.21 (8.61) | 18.21 (5.59) | 20.94 (11.94) | .303a |
| Gender percentage female | 0 | 57.14 | 73.68 | <.001b |
| Adaptive behavior composite (SD) | 47.80 (14.64) | 51.29 (17.42) | 47.89 (15.95) | .798 |
| Adaptive behaviour—communication (SD) | 39.40 (17.56) | 48.79 (21.94) | 47.94 (17.70) | .332 |
| ADOS mean score (SD) | 9.6 (5.25) | NA | NA | NA |
| Participants meeting ASD cut-off | 11 | NA | NA | |
| Participants meeting autism cut-off | 5 | NA | NA |
aParticipants were also matched on chronological age when compared separately (FXS versus CdLS: t (27) = 1.774, p = .087; FXS versus RTS: t (32) = .891, p = .380; CdLS versus RTS: t (31) = −.703, p = .487)
bParticipants with CdLS and RTS were matched on gender (χ 2 (1) = .992, p = .319)