The Stroke Self-Efficacy Questionnaire Brazil (SSEQ-B): a structural validity analysis.

BACKGROUND: Self-efficacy has been shown to play an important role in rehabilitation outcomes of stroke patients. The Stroke Self-Efficacy Questionnaire Brazil (SSEQ-B) is designed to assess self-efficacy of functional performance after stroke. OBJECTIVE: This research sought to address the structural validity of the SSEQ-B using exploratory and confirmatory factorial analyses. METHODS: This is a cross-sectional study. We performed a reliability assessment and structural validation of the SSEQ-B in 115 Brazilian stroke survivors living in Rio Grande do Sul or São Paulo. Results: Sample mean age was 62.7 ± 14.2 years. Internal consistency presents a Cronbach's Alpha (αC) of 0.829. Exploratory factorial analysis using the scree plot method revealed a bifactorial structure, consisting of activity and self-management domains. While confirmatory factorial analysis suggested a trifactorial structure, the loading ranges between factors 1 and 3 were very similar, suggesting they could be collapsed - resulting in the same factors found in the scree plot analysis. Both structures with subscales showed good construct validity. CONCLUSION: SSEQ-B is a valid and reliable measure of stroke self-efficacy. The preferred structure of the SSEQ-B is bifactorial and includes the domains activity and self-management.

The concurrent validity of the Stroke Self-Efficacy Questionnaire Brazil (SSEQ-B) in brazilian stroke survivors / Validade concorrente do Stroke Self-Efficacy Questionnaire Brazil (SSEQ-B) em brasileiros acometidos pelo acidente vascular cerebral

The Stroke Self-Efficacy Questionnaire Brazil (SSEQ-B) is designed to assess the self-efficacy of functional performance after stroke. Objective: To evaluate the concurrent validity of the SSEQ-B in Brazilian stroke survivors in relation to gold-standard measures of instrumental and basic daily living activities as well as quality of life after stroke. Methods: The concurrent validity of the SSEQ-B was tested using the Frenchay Activity Index (FAI), Barthel Index (BI) and Stroke Specific Quality of Life Scale (SS-QOL). Descriptive statistics, the Spearman's coefficient index, Intraclass correlation coefficient (ICC), Cronbach alpha and achieved post-hoc power (1-ß) analyses were conducted. Results: Seventy-five stroke survivors aged 66.64 ± 12.97 years were included in this study. Total scores from the SSEQ-B were strongly correlated with the FAI (ICC= 0.8 / r= 0.72 / 1-ß= 1.0) and BI (ICC= 0.68 / r= 0.68 / 1-ß= 0.99), but weakly correlated with SS-QOL (ICC= 0.46 / r= 0.65 / 1-ß= 0.94), which suggests stroke self-efficacy is more closely associated with instrumental and daily living activities than the quality of life. Conclusion: The SSEQ-B exhibits good concurrent validity with instrumental and daily living activities and could be useful when assessing stroke self-efficacy in Brazilians.

O Stroke Self-Efficacy Questionnaire Brazil (SSEQ-B) foi desenvolvido para avaliar a autoeficácia no desempenho funcional depois do Acidente Vascular Cerebral (AVC). Objetivo: avaliar a validação concorrente do SSEQ-B em sobreviventes brasileiros de AVC em relação a avaliações padrão áureo de atividades de vida diárias e instrumentais assim como a qualidade de vida pós-AVC. Métodos: A validação concorrente do SSEQ-B foi avaliada utilizando o Índice de Atividade Frenchay (FAI), o Índice de Barthel (BI) e a Qualidade de Vida pós-AVC (SS-QOL). As análises de estatística descritiva, índice de coeficiente Spearman's, coeficiente de correlação intraclasse (ICC), alpha de Cronbach e potência post-hoc alcançada foram conduzidas. Resultados: Setenta e cinco sobreviventes de AVC com idade de 66.64 ± 12.97 anos foram incluídos neste estudo. A pontuação total do SSEQ-B foi correlacionada significativamente com o FAI (ICC= 0.8 / r= 0.72 / 1-ß= 1.0), BI (ICC= 0.68 / r= 0.68 / 1-ß= 0.99) e SS-QOL (ICC= 0.46 / r= 0.65 / 1-ß= 0.94), o que sugere que a autoeficácia de sobreviventes de AVC está associada com as atividades de vida diárias e instrumentais. Porém, há fraca correlação com a qualidade de vida desta amostra. Conclusão: O SSEQ-B exibe uma boa validação concorrente com as atividades de vida diárias e instrumentais e parece ser útil na avalição da autoeficácia em sobreviventes de AVC residentes no Brasil.

Changes in Cervical Lordosis After Orthognathic Surgery in Skeletal Class III Patients.

The purpose of this study was to evaluate cervical lordosis and head posture changes using lateral cephalographs after bimaxillary orthognathic surgery for mandibular prognatism by null hypothesis. Twenty-five patients with skeletal class III dentofacial deformities (10 men, 15 women; mean age, 29.28 ±â€Š8.23 years; range 18-48 years) were included in this prospective clinical study. Lateral cephalographs were taken in natural head position (NHP) 2 weeks before and 6 months after orthognathic surgery. The reproducibility of the radiographer's technique of taking radiographs in NHP was investigated using a photographic method and found to be acceptable. All measurements for cervical lordosis (CV1/CV2; CV3/CV7; CV1/CV7), head posture (NSL/OPT; NSL/VER), and other cephalometric values (NSL/Go-Gn; NSL/OCL; Overjet) were repeated 3 times by the same blinded investigator at 2-week intervals and the average values of the 3 measurements were calculated to use in statistical analysis. Intraclass correlation coefficients (ICC) ranged between 0.996 and 1.000, demonstrating a high reliability of the measures. Statistically significant differences were found for CV3/CV7 (P = 0.006) and CV1/CV7 (P = 0.005) and no significant differences were identified in head posture for both cranio-cervical and cranio-vertical angles. The null hypothesis was rejected. Orthognathic surgery resulted in significant cervical lordosis extension, and a tendency for head extension could also be observed.

Postural assessment in class III patients before and after orthognathic surgery.

PURPOSE: This study aimed to assess body posture before and after bimaxillary orthognathic surgery by photogrammetry in skeletal class III patients. METHODS: Thirty-one patients with skeletal class III dentofacial deformities (14 men, 17 women) who underwent orthodontic preparation for surgery were included in this non-randomized controlled trial. Of these, 15 who did not undergo orthognathic surgery during the period of this study served as controls. Postural assessment was performed by photogrammetry using SAPO® (Postural Assessment Software) based on anterior-, posterior-, and lateral-view images taken 1 month before and 4 months after bimaxillary orthognathic surgery with internal rigid fixation (or 4 months after the initial assessment, for the control group). The study was approved by PUCRS Research Ethics Committee, and written informed consent was obtained from all individual participants prior to their inclusion in the study. RESULTS: There was no significant difference between groups for age, gender, and GAP. In the intervention group, the right leg/hindfoot angle, which initially indicated a valgus deformity, normalized after intervention (P < 0.048). Posterior displacement of the head (P < 0.005) and trunk (P < 0.004) were observed after intervention. CONCLUSIONS: These results suggest that correction of class III dentofacial deformities by bimaxillary orthognathic surgery can produce systemic postural adjustments, especially posterior displacement of the head and trunk and knee and ankle valgus.

Postural Assessment in Class III Patients Before Orthognathic Surgery.

PURPOSE: To determine the postural characteristics of patients with Class III dentofacial deformities before orthognathic surgery by photogrammetry using SAPO postural assessment software. MATERIALS AND METHODS: This was a cross-sectional study. Eligible participants were adult patients who had an indication for orthognathic surgery to correct skeletal Class III dentofacial deformities and were undergoing orthodontic preparation for surgery. Patients were recruited at the outpatient clinic for dentofacial deformities of the authors' institution from March to November 2015. Postural assessment was performed by photogrammetry based on anterior, posterior, and lateral images, which were analyzed using SAPO software. RESULTS: The sample consisted of 40 patients with a mean age of 28.7 years; 55% were men. Postural changes were found in most anatomic structures, and the main changes were anterior displacement of the center of gravity (sagittal plane asymmetry, 43.77%) and a tendency to left lateral deviation (frontal plane asymmetry, -3.89%). The anterior view showed a pattern of head tilt to the left (measured value minus reference value [Δ], -0.22), elevation of the left acromion (Δ, 2.31), elevation of the right anterior superior iliac spine (Δ, -0.56), right knee with genu varum (Δ, 1.25), and left knee with genu valgum (Δ, -1.55). The posterior view displayed scapular asymmetry with abduction of the right scapula (Δ, 7.54) and valgus foot deformity (Δright, 8.35; Δleft, 11.60). The lateral view depicted decreased cervical lordosis (Δright, 22.63; Δleft, 19.98), pelvic anteversion (Δright, -0.56; Δleft, -0.26), and genu flexum at the right (Δ, 6.85) and left (Δ, 4.40) knees. Twenty-seven patients (67.5%) reported temporomandibular joint pain. CONCLUSIONS: Postural assessment by photogrammetry showed that most anatomic structures were outside the normal range in patients with skeletal Class III dentofacial deformities before orthognathic surgery. These results suggest that dentofacial abnormalities can lead to postural disorders in this population.