Table 2.

Means, SDs, and ranges of raw scores for mean Number of Different Root Words (NDRW), Number of Different Bound Morphemes (NDBM) and Mean Length of Utterance in Words (MLUw) at both test ages. The number of children with CIs is 126 and with normal hearing (NH) is 30.

	CI	NH
Age at Testing (in years)	Mean (SD)	Mean (SD)
NDRW*
3.5	74.16 (25.49)	111.67 (17.13)
4.5	95.08 (27.08)	124.53 (15.76)
NDBM*
3.5	4.38 (2.66)	7.63 (1.67)
4.5	6.02 (2.73)	8.50 (1.43)
MLUw +
3.5	2.04 (.70)	3.15 (.54)
4.5	2.63 (.83)	3.60 (.58)

^*calculated on 100-utterances

⁺calculated on entire 30-minute language sample