Table 1.
Mean (M), standard deviation (SD), and range of study variables in the Klee et al. (2004) study and in the current sample.
|
Klee et al. (2004) |
Current sample |
|||
|---|---|---|---|---|
| TD (n = 15) | SLI (n = 15) | TD (n = 14) | SLI (n = 15) | |
| Age (months) | ||||
| M | 56.87 | 56.40 | 55.71 | 55.27 |
| SD | 3.44 | 2.59 | 3.36 | 2.89 |
| Range | 52–61 | 52–59 | 49–60 | 50–60 |
| RDLS–R | ||||
| M | 55.93 | 42.46 | 55.64 | 41.40 |
| SD | 3.83 | 9.98 | 3.23 | 5.59 |
| Range | 48–61 | 28–58 | 50–62 | 30–50 |
| RDLS–E | ||||
| M | DNT | NA | 57.57 | 49.40 |
| SD | 5.02 | 6.99 | ||
| Range | 59–66 | 37–62 | ||
| CMMS | ||||
| M | DNT | NA | 108.93 | 102.80 |
| SD | 5.99 | 10.32 | ||
| Range | 98–120 | 86–117 | ||
| CIUTT | ||||
| M | 184.13 | 133.20 | 176.79 | 158.23 |
| SD | 51.87 | 20.99 | 23.32 | 28.39 |
| Range | 78–267 | 106–177 | 154–240 | 119–219 |
| TNW | ||||
| M | 883.27 | 378.67 | 796.29 | 576.80 |
| SD | 333.39 | 102.63 | 134.42 | 154.80 |
| Range | 325–1311 | 251–540 | 578–1039 | 300–839 |
| NDW | ||||
| M | 217.73 | 126.47 | 193.93 | 142.40 |
| SD | 42.06 | 21.65 | 31.98 | 32.53 |
| Range | 136–267 | 15–90 | 149–259 | 98–193 |
| MLU | ||||
| M | 4.65 | 2.64 | 4.33 | 3.38 |
| SD | 1.33 | 0.85 | 0.71 | 0.75 |
| Range | 3.01–8.20 | 1.35–3.92 | 3.39–5.48 | 2.33–4.53 |
| D | ||||
| M | 72.26 | 48.20 | 57.69 | 42.92 |
| SD | 12.53 | 8.69 | 12.49 | 13.59 |
| Range | 54.07–97.14 | 30.96–59.34 | 40.95–82.38 | 23.48–68.48 |
Note.RDLS–R = Reynell Developmental Language Scales—Receptive raw score; RDLS–E = Reynell Developmental Language Scales—Expressive raw score; DNT = did not test; NA = not available; CMMS = Columbia Mental Maturity Scale; CIUTT = number of complete and intelligible utterances; TNW = total number of words; NDW = number of different words; MLU = mean length of utterances in morphemes; D = lexical diversity.