Table 2.
Participant demographics: Individuals with ASC with and without language delay
| Characteristics |
LD (n = 26); mean (SD) [range] |
No‐LD (n = 41); mean (SD) [range] |
Statistics |
|---|---|---|---|
| Agea | 23.58 (5.37) [18–41] | 27.85 (7.13) [18–43] | NT>LD |
| Full scale IQa | 106.69 (12.32) [73–128] | 110.93 (15.82) [75–135] | NT>LD |
| Verbal IQb | 105.42 (11.90) [77–126] | 110.73 (15.61) [79–139] | ns |
| Performance IQa | 106.15 (13.78) [73–131] | 108.51 (17.41) [75–138] | NT>LD and No–LD |
| ADI‐Rc | 44.15 (10.04) [25–62] | 35.71 (8.59) [21–55] | — |
| Social | 20.08 (5.74) [10–28] | 16.17 (4.55) [9–26] | — |
| Communication | 15.31 (4.13) [8–24] | 12.80 (4.0) [8–22] | — |
| RSB | 4.85 (2.22) [2–10] | 4.93 (2.26) [2–10] | — |
| ADOSd | 12.35 (6.39) [1–24] | 10.85 (5.14) [0–24] | — |
| Communication | 3.38 (2.0) [0–7] | 3.13 (1.60) [0–6] | — |
| Social | 6.42 (3.79) [1–14] | 5.78 (2.76) [1–11] | — |
| RSB | 1.38 (1.55) [0–5] | 1.35 (1.44) [0–6] | — |
Abbreviations: ADI‐R: autism diagnostic interview–revised; ADOS: autism diagnostic observation schedule; LD: language delay; LD: individuals with ASC with language delay; No‐LD: individuals with ASC without language delay; NT: neurotypicals; RSB: repetitive and stereotyped behaviour.
Individuals with LD significantly differed in performance IQ, full‐scale IQ and age form controls (P < 0.05).
There were no significant differences between the ASC and control groups in verbal IQ (P > 0.1).
Information was available for all 26 individuals with LD and all 41 individuals without LD. The following cut‐off scores were used: ADI‐R Social, >10; Communication, >8; and RSB, >3.
Information was available for all 26 individuals with LD and for 40 individuals without LD, using a cut‐off score of 7.