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Table 5 Comparison between the three groups in their performance on CAS test battery

From: Developing a test battery for diagnosis of childhood apraxia of speech in Arabic speakers

Items GI (N = 10) (mean ± SD) GII (N = 20) (mean ± SD) GIII (N = 40) (mean ± SD) Test of significance
p value
Receptive expressive discrepancy 0 ± 0 55.0 ± 51.04 100 ± 0 2 = 44.3χ
< 0.001**
Non-speech motor task 81.25 ± 13.8 97.8 ± 4.2 99.4 ± 1.89 F = 41.06
< 0.001**
Speech motor task 52.5 ± 17.4 91.7 ± 8.8 99.7 ± 0.63 F = 142.09
< 0.001**
Diadochokinesis 6.00 ± 9.6 71.00 ± 15.2 98.00 ± 7.5 χ2 = 55.9
< 0.001**
Consistency of speech production 25 ± 26.3 90.00 ± 20.5 98.7 ± 7.9 χ2 = 47.5
< 0.001**
Prosodic assessment 31.3 ± 19.8 75.00 ± 15.7 100 ± 0 F = 160.3
< 0.001**
Total score 32.6 ± 8.7 80.1 ± 11.14 99.3 ± 1.9 F = 376.5
< 0.001**
  1. Post-hoc test
  2. **p < 0.001(highly significant)
  3. non-parametric variables K-W test