Table 1.
Descriptive information on child characteristics, family characteristics, and non-project services reported separately for the experimental and control group
| Experimental group | Control group | Effect size | |||
|---|---|---|---|---|---|
|
|
|
|
|||
| M ± SD | n (range) | M ± SD | n (range) | Hedge’s G | |
| Child age (months) | 58.3 ± 12.7 | 36 (33–82) | 55.9 ± 11.9 | 34 (32–76) | .19 |
| Mullen Scales of Early Learning | |||||
| Fine motor age (months) | 28.6 ± 10.4 | 36 (12–55) | 28.3 ± 11.8 | 34 (10–59) | .03 |
| Visual reception age (months) | 26.6 ± 9.4 | 36 (11–50) | 24.6 ± 11.2 | 33 (1–11) | .19 |
| Receptive language age (months) | 17.5 ± 8.0 | 36 (5–36) | 16.5 ± 8.0 | 34 (1–33) | .13 |
| Expressive language age (months) | 16.5 ± 9.8 | 36 (4–36) | 15.1 ± 8.2 | 34 (4–37) | .15 |
| Autism Diagnostic Observation Schedule | |||||
| Social affect total | 14.7 ± 3.3 | 36 (6–20) | 14.8 ± 3.4 | 33 (4–20) | -.03 |
| Restricted and repetitive behavior total | 4.9 ± 2.0 | 36 (0–8) | 5.2 ± 2.2 | 33 (0–8) | -.14 |
| Total | 19.6 ± 4.1 | 36 (9–26) | 20.0 ± 4.2 | 33 (7–26) | -.10 |
| Early Social Communication Scale | |||||
| Response to joint attention | 47.0 ± 24.1 | 36 (8–100) | 39.6 ± 24.1 | 34 (5–88) | .31 |
| Mother characteristics | |||||
| Chronological age (years) | 36.2 ± 5.3 | 36 (26–45) | 35.7 ± 6.1 | 34 (23–48) | .09 |
| Education (years) | 14.9 ± 2.6 | 36 (10–20) | 15.8 ± 2.5 | 34 (12–22) | −.35 |
| Non-project services | |||||
| Autism specific individual services | |||||
| Twelve months prior to intake | 8.8 ± 10.4 | 36 (0–44) | 8.8 ± 10.9 | 32 (0–46) | .00 |
| Between intake and exit | 12.4 ± 11.0 | 34 (0–40) | 12.1 ± 10.2 | 30 (0–44) | .03 |
| School programs | |||||
| Twelve months prior to intake | 11.5 ± 6.6 | 36 (0–29) | 12.6 ± 7.1 | 32 (0–25) | −.16 |
| Between intake and exit | 14.6 ± 8.8 | 34 (0–30) | 14.8 ± 5.5 | 30 (1–28) | −.03 |