Table 2.
Before Matching: Descriptive Statistics of Paired Groups for Matched and Unmatched Measures
| Contrast | Measure | M(SD) | t | P | d | |
|---|---|---|---|---|---|---|
|
| ||||||
| Group 1 | Group 2 | |||||
| Contrast 1: ASD vs. TD | n1 = 50 | n2 = 42 | ||||
| CA | 6.55 (1.21) | 6.15 (1.29) | 1.51 | 0.135 | 0.32 | |
| NVIQ | 108.58 (17.19) | 118.57 (14.80) | −2.99 | 0.004 | −0.62 | |
| (VIQ) | 95.14 (17.80) | 119.48 (13.01) | −7.56 | 0.000 | −1.54 | |
| (SCQ) | 20.69 (5.28) | 2.74 (2.53) | 21.30 | 0.000 | 4.22 | |
| (ADOS) | 7.46 (1.95) | 1.24 (0.53) | 21.62 | 0.000 | 4.19 | |
| Contrast 2: ALN vs. TD | n1 = 25 | n2 = 42 | ||||
| CA | 6.39 (1.30) | 6.15 (1.29) | 0.72 | 0.472 | 0.18 | |
| NVIQ | 114.00 (16.99) | 118.57 (14.80) | −1.12 | 0.270 | −0.29 | |
| VIQ | 107.68 (14.84) | 119.48 (13.01) | −3.29 | 0.002 | −0.86 | |
| (SCQ) | 20.41 (4.96) | 2.74 (2.53) | 16.56 | 0.000 | 4.87 | |
| (ADOS) | 6.88 (2.03) | 1.24 (0.53) | 13.64 | 0.000 | 4.33 | |
| Contrast 3: ALI vs. SLI | n1 = 25 | n2 = 19 | ||||
| CA | 6.71 (1.12) | 6.97 (1.16) | −0.76 | 0.455 | −0.23 | |
| NVIQ | 103.16 (15.93) | 101.74 (12.29) | 0.33 | 0.740 | 0.10 | |
| VIQ | 82.60 (9.95) | 85.53 (6.48) | −1.18 | 0.245 | −0.34 | |
| (SCQ) | 20.97 (5.67) | 11.90 (6.68) | 4.76 | 0.000 | 1.48 | |
| (ADOS) | 8.04 (1.72) | 2.84 (2.65) | 7.44 | 0.000 | 2.40 | |
| Contrast 4: ALI vs. ALN | n1 = 25 | n2 = 25 | ||||
| CA | 6.71 (1.12) | 6.39 (1.30) | 0.92 | 0.361 | 0.26 | |
| (NVIQ) | 103.16 (15.93) | 114 (16.99) | −2.33 | 0.024 | −0.66 | |
| (VIQ) | 82.60 (9.95) | 107.68 (14.84) | −7.02 | 0.000 | −1.99 | |
| SCQ | 20.97 (5.67) | 20.41 (4.96) | 0.37 | 0.711 | 0.11 | |
| ADOS | 8.04 (1.72) | 6.88 (2.03) | 2.18 | 0.034 | 0.62 | |
Note. Unmatched measures are enclosed by parentheses.
CA, chronological age; VIQ, verbal IQ; NVIQ, nonverbal IQ; ADOS, Autism Diagnostic Observation Schedule Severity Score; SCQ, Social Communication Questionnaire Total Score; ASD, autism spectrum disorders; TD, typically developing; ALN, ASD with normal, non-impaired language; ALI, ASD plus language impairment; SLI, specific language impairment.