New Therapeutical Perspectives in Cases of Phonological Disorders
Phase: NA
Conditions: Speech Sound Disorders
Sponsor: Universidade Federal de Santa Maria

TITLE PAGE 
New Therapeutical Perspectives in Cases of Phonological 
Disorders 
28053914.1.0000.5346 
DOCUMENT DATE: 20/11/2018 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

STUDY PROTOCOL WITH SAP- STATISTICAL ANALYSIS PLAN 
Objectives: The objective of this research was to analyze and compare 
phonological aspects such as phonetic inventory, phonological system, severity of 
the speech sound disorders, altered distinctive traits and phonological processes, 
as well as phonological and phonoarticulatory awareness, besides the auditory 
aspects of the abilities and variables present in Long Auditory Evoked Potential 
Long. Comparisons of the phonological and auditory aspects were performed 
before and after the intensive period of treatment in children with speech sound 
disorders. Twenty-five therapy sessions were assigned. The children were 
randomly drawn among three groups. Group 1 - Placebo: This group received no 
specific treatment for speech deviations, only used the computer resource to play 
on a website. The Group 2-Cycles Traditional: the therapy used the Modified 
Cycles Model. And the Group 3-SIFALA ("Speech Intervention Software"): the 
therapy used the proposal of the Strata Model based on Stimulability and Segment 
Complexity that was developed in software format. The categorization of these 
groups obeys the methodological questions of a randomized clinical trial. The 
evaluation of the children and the treatment of one of the SIFALA group were 
carried out by the responsible researcher. The other two groups were treated by 
fellowship academics of the Speech Language Pathology program. The 
reassessment of all procedures was performed by speech language pathologists 
with experience in speech and hearing areas who did not have knowledge about 
the variables of the research, so it was categorized as a single-blind trial. After the 
treatment period, the data were compared by means of the statistical analysis that 
used as a criterion to estimate the effects in each therapy group using the linear 
regression model with mixed effects for the quantitative variables responses. Also 

was used the polytomic logistic model for ordinal qualitative variables. In addition, 
Chi-Square and Wilcoxon tests were used for analysis of the abilities and variables 
of Long Auditory Evoked Potential. A significance level of 0.05 was set for all tests. 
Most of the children treated presented gains in the phonological and auditory 
variables. The therapeutic models used fulfilled the objective of reorganization of 
the phonological system, being possible to point out as innovative and 
differentiated the model using software-SIFALA. Key Words:  Children. Language. 
Speech Sound Disorders. Auditory Perception. Rehabilitation of Speech Sound 
Disorders. 
STATISTICAL ANALYSIS PLAN 
The variables chosen for the static analyzes characterize the phonological and auditory 
aspects of the evaluations applied before and after the treatment period. For the 
phonological aspects, we adopted the variables that determine the phonological system, 
dividing sounds by the following criteria: acquired, partially acquired and not acquired; 
(SHRIBERG et al., 1997), altered distinctive traits and phonological processes. The 
PCFO (SEABRA and CAPOVILLA, 2012) and the evaluation of phonoarticulator 
awareness – CONFIART (SANTOS, VIEIRA and VIDOR-SOUZA, 2014) were also 
analyzed. For the auditory aspects of the LAEP, the variables were the measures of 
latency and amplitude of the right and left ears, as well as the qualitative description of 
the occurrence of the P300 wave. The main statistical method used as a criterion for 
estimating the effects in each therapy group was the linear regression model with mixed 
effects (FAUSTO et al., 2008; PINHEIRO et al., 2017) for the quantitative response 
variables. This model uses fixed effect for the therapy group and random effects for 
children in the treatment periods, extracting information from the data more accurately 
than the traditional linear models, which usually use only fixed effects for the explanatory 

variables. The main inferential utility of the linear regression model is related to the 
interpretation of the significant coefficients, with which it is possible to have an estimate 
for the change in the level of the phonological aspects considered in the research, among 
them: phonetic inventory, phonological system, distinctive features and phonological 
processes. The polytomic logistic model was also used for the variables of ordinal 
qualitative responses, which included the analysis of PCFO performance (SEABRA and 
CAPOVILLA, 2012) and the evaluation of phonoarticulatory awareness. (SANTOS, 
VIEIRA and VIDOR-SOUZA, 2014).The advantage of the application of logistic models is 
mainly the determination of the odds factor through the exponentiation of the estimated 
coefficients. Other tests involved in validating the results include Fisher's Exact, 
ShaphiroWilk and Levene T for correlated samples and Analysis of Variance. Chi-Square 
and Wilcoxon tests were applied to the PEALL variables. For all hypothesis tests, a 
significance level of 0.05 was set.