Utility of the Intelligibility in Context Scale for Predicting Speech Intelligibility of Children with Cerebral Palsy
Abstract
:1. Introduction
2. Materials and Methods
2.1. Participants
2.1.1. Children with Cerebral Palsy
2.1.2. Adult Listeners
2.2. Measures
2.2.1. Transcription Intelligibility Scores
2.2.2. Intelligibility in Context Scale Ratings
2.3. Statistical Procedures
3. Results
3.1. Research Question 1: How Well Do ICS Composite Scores Predict Transcription Intelligibility Scores?
3.2. Research Question 2: Do Individual Questions from the ICS Differentially Predict Transcription Intelligibility Scores?
3.3. Research Question 3: How Well Do ICS Composite Scores Differentiate between Children with and without Speech Motor Impairment?
4. Discussion
4.1. ICS Composite Scores Predicted Transcription Intelligibility Scores with a Moderate Effect Size
4.2. Individual ICS Items Differentially Predicted Transcription Intelligibility Scores
4.3. ICS Composite Scores below 4 Indicated Higher Likelihood of Having Dysarthria
5. Limitations and Future Directions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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NSMI (n = 13) | SMI (n = 35) | Total (n = 48) | |
---|---|---|---|
Male:female ratio | 9:4 | 19:16 | 28:20 |
Age in years: Mean (SD) | 13.01 (1.92) | 12.74 (1.97) | 12.82 (1.94) |
Cerebral palsy type | |||
Spastic | 13 | 26 | 39 |
Diplegia | 4 | 6 | 10 |
Hemiplegia (left) | 6 | 5 | 11 |
Hemiplegia (right) | 3 | 9 | 12 |
Triplegia | 0 | 1 | 1 |
Quadriplegia | 0 | 4 | 4 |
Not reported | 0 | 1 | 1 |
Ataxic | 0 | 4 | 4 |
Hypotonic | 0 | 1 | 1 |
Mixed | 0 | 1 | 1 |
Unknown | 0 | 3 | 3 |
Dyskinetic | 0 | 0 | 0 |
GMFCS | |||
I | 12 | 12 | 24 |
II | 1 | 15 | 16 |
III | 0 | 4 | 4 |
IV | 0 | 2 | 2 |
V | 0 | 2 | 2 |
MACS | |||
I | 6 | 10 | 16 |
II | 7 | 16 | 23 |
III | 0 | 8 | 8 |
IV | 0 | 1 | 1 |
V | 0 | 0 | 0 |
95% Confidence Interval | |||||
---|---|---|---|---|---|
ICS Score | Intelligibility Score | Standard Error | Lower Boundary | Upper Boundary | |
−3 SD | 2.31 | 17.71% | 0.08 | 2.16% | 33.26% |
−2 SD | 2.93 | 31.96% | 0.08 | 15.70% | 48.21% |
−1 SD | 3.55 | 50.61% | 0.06 | 38.87% | 62.35% |
Mean | 4.17 | 69.10% | 0.04 | 61.59% | 76.61% |
+1 SD | 4.79 | 82.99% | 0.04 | 75.69% | 90.30% |
ICS Items | AIC | |
---|---|---|
Q7: Stranger | −84.04 | 0.53 |
Q5: Acquaintance | −75.72 | 0.43 |
Q4: Friend | −74.63 | 0.41 |
Q3: Extended Family | −74.36 | 0.41 |
Q6: Teacher | −61.90 | 0.16 |
Q2: Immediate Family | −60.78 | 0.13 |
Q1: Parent | −59.34 | 0.09 |
ICS Items | Chi Square | p-Value | AIC Difference | Difference |
---|---|---|---|---|
Q7 (Stranger) + Q6 (Teacher) | 2.72 | 0.10 | 0.72 | 0.02 |
Q7 (Stranger) + Q1 (Parent) | 1.07 | 0.30 | −0.93 | 0.01 |
Q7 (Stranger) + Q2 (Immediate Family) | 0.94 | 0.33 | −1.06 | 0.01 |
Q7 (Stranger) + Q4 (Extended Family | 0.64 | 0.43 | −1.36 | 0.01 |
Q7 (Stranger) + Q5 (Friend) | 0.09 | 0.77 | −1.91 | 0.00 |
Q7 (Stranger) + Q3 (Extended Family) | 0.00 | 0.95 | −2.00 | 0.00 |
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Soriano, J.U.; Olivieri, A.; Hustad, K.C. Utility of the Intelligibility in Context Scale for Predicting Speech Intelligibility of Children with Cerebral Palsy. Brain Sci. 2021, 11, 1540. https://doi.org/10.3390/brainsci11111540
Soriano JU, Olivieri A, Hustad KC. Utility of the Intelligibility in Context Scale for Predicting Speech Intelligibility of Children with Cerebral Palsy. Brain Sciences. 2021; 11(11):1540. https://doi.org/10.3390/brainsci11111540
Chicago/Turabian StyleSoriano, Jennifer U., Abby Olivieri, and Katherine C. Hustad. 2021. "Utility of the Intelligibility in Context Scale for Predicting Speech Intelligibility of Children with Cerebral Palsy" Brain Sciences 11, no. 11: 1540. https://doi.org/10.3390/brainsci11111540