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Table 3 Descriptive statistics and group contrasts for the proportion of phonemes correct on the nonword repetition test by syllable length

From: Memory in language-impaired children with and without autism

     

Cliff’s Δ

 

SLI

ALI

ALN

H(2)

p

Post hoc adjusted

SLI < ALI

ALI < ALN

(n = 18)

(n = 22)

(n = 20)

Mann–Whitney testsa

2 syllables

        

 Median

.85

.95

.92

7.51

.02

SLI < [ALI = ALN]

.47

−.07

 Range

.60–1.00

.80–1.00

.75–1.00

     

 Mean (SD)

.85 (.11)

.93 (.06)

.92 (.07)

     

 95 % CI for the meanb

[.80; .90]

[.91; .96]

[.89; .95]

     

3 syllables

        

 Median

.79

.86

.96

18.43

<.001

SLI < ALI < ALN

.45

.46

 Range

.50–.96

.57–1.00

.71–1.00

     

 Mean (SD)

.78 (.11)

.85 (.11)

.93 (.07)

     

 95 % CI for the meanb

[.72; .82]

[.80; .89]

[.89; .95]

     

 % PPC < .90c

89 %

73 %

35 %

     

4 syllables

        

 Median

.60

.64

.81

14.46

<.001

[SLI = ALI] < ALN

.20

.48

 Range

.33–.78

.36–.96

.53–.94

     

 Mean (SD)

.60 (.12)

.66 (.15)

.78 (.12)

     

 95 % CI for the meanb

[.54; .65]

[.59; .71]

[.72; .83]

     

 % PPC < .75d

89 %

73 %

40 %

     
  1. aIndicated pairwise group differences (< or >) based on p values adjusted using the False Discovery Rate method (q < .05) [63]
  2. bBased on 10,000 bootstrapped samples
  3. cCompared to 95 % of language-impaired children ages 5; 8 to 12; 2 (N = 44) based on enrollment in language intervention [54]
  4. dCompared to 98 % of language-impaired children ages 5; 8 to 12; 2 (N = 44) based on enrollment in language intervention [54]