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1.
Muscle Nerve ; 63(6): 837-844, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33711174

RESUMO

INTRODUCTION: The Spinal Muscular Atrophy Health Index (SMA-HI) is a multifaceted, disease-specific, patient-reported outcome to measure an SMA patient's perception of their disease burden. In preparation for upcoming therapeutic trials, we examine the validity, reliability, and usability of the SMA-HI in adults, teenagers, and children with SMA. METHODS: Using data from a cross-sectional study of 359 international adult patients with SMA, we identified the most relevant symptoms to include in the SMA-HI. We utilized factor analysis, patient interviews with adults and minors (age 8-15 years), known-group validity testing, and test-retest reliability assessments to evaluate and refine the SMA-HI. RESULTS: The SMA-HI measures overall disease burden and 15 areas of SMA health. Fifteen adult patients and five patients, age 8 to 15 years, participated in semistructured qualitative interviews and found the SMA-HI to be comprehensive, easily completed, and to have clear meaning. The final SMA-HI and its subscales demonstrated good internal consistency (Cronbach α = 0.77-0.96), high test-retest reliability (intraclass correlation coefficient = 0.60-0.96), and an ability to differentiate between SMA groups with different disease severities affecting areas such as employment and ambulation (P < .0001 for both). DISCUSSION: This research provides evidence that the SMA-HI is a valid, relevant, and reliable outcome measure to assess multifaceted patient-reported disease burden in older children, teenagers, and adults with SMA. The SMA-HI provides an opportunity for researchers and clinicians to measure a SMA patient's perception of their health and determine relevant changes in response to therapeutic intervention or disease progression.


Assuntos
Atrofia Muscular Espinal/diagnóstico , Adolescente , Adulto , Idoso , Estudos Transversais , Progressão da Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medidas de Resultados Relatados pelo Paciente , Índice de Gravidade de Doença , Adulto Jovem
2.
Neurology ; 91(13): e1206-e1214, 2018 09 25.
Artigo em Inglês | MEDLINE | ID: mdl-30143566

RESUMO

OBJECTIVE: To determine the frequency and relative importance of symptoms experienced by adults with spinal muscular atrophy (SMA) and to identify factors that are associated with a higher burden of disease in this population. METHODS: We conducted a cross-sectional study of 359 adults with SMA using the International SMA Patient Registry. Participants provided input regarding 20 symptomatic themes and 207 symptoms that potentially affect adults with SMA. Participants were asked about the relative importance of each symptom, and analysis was conducted to determine how age, sex, SMA type, education, mobility, and employment status relate to symptom prevalence. RESULTS: Limitations with mobility or walking (98.6%) and the inability to do activities (98.6%) were the 2 themes with the highest prevalence in the study sample. Limitation with mobility or walking was the theme that was identified as having the greatest effect on the lives of adults with SMA. Employment status was associated with the prevalence of 4 of 20 themes and a reliance on an assistive device was associated with 7 of 20 themes. The prevalence of breathing difficulties, choking or swallowing difficulties, and communication difficulties differed among those with different SMA types. CONCLUSIONS: There are many symptomatic themes that affect the lives of adults with SMA. These themes vary in prevalence and relative importance in the adult SMA population.


Assuntos
Atrofia Muscular Espinal/epidemiologia , Atividades Cotidianas , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Transtornos da Comunicação/epidemiologia , Transtornos da Comunicação/etiologia , Transtornos da Comunicação/fisiopatologia , Estudos Transversais , Transtornos de Deglutição/epidemiologia , Transtornos de Deglutição/etiologia , Transtornos de Deglutição/fisiopatologia , Avaliação da Deficiência , Emprego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Atrofia Muscular Espinal/diagnóstico , Atrofia Muscular Espinal/fisiopatologia , Medidas de Resultados Relatados pelo Paciente , Prevalência , Transtornos Respiratórios/epidemiologia , Transtornos Respiratórios/etiologia , Transtornos Respiratórios/fisiopatologia , Tecnologia Assistiva , Caminhada , Adulto Jovem
3.
J Neurol ; 261(1): 152-63, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24162038

RESUMO

Spinal muscular atrophy (SMA) is an autosomal recessive genetic disorder characterised by the degeneration of motor neurons and progressive muscle weakness. It is caused by homozygous deletions in the survival motor neuron gene on chromosome 5. SMA shows a wide range of clinical severity, with SMA type I patients often dying before 2 years of age, whereas type III patients experience less severe clinical manifestations and can have a normal life span. Here, we describe the design, setup and utilisation of the TREAT-NMD national SMA patient registries characterised by a small, but fully standardised set of registry items and by genetic confirmation in all patients. We analyse a selection of clinical items from the SMA registries in order to provide a snapshot of the clinical data stratified by SMA subtype, and compare these results with published recommendations on standards of care. Our study included 5,068 SMA patients in 25 countries. A total of 615 patients were ventilated, either invasively (178) or non-invasively (437), 439 received tube feeding and 455 had had scoliosis surgery. Some of these interventions were not available to patients in all countries, but differences were also noted among high-income countries with comparable wealth and health care systems. This study provides the basis for further research, such as quality of life in ventilated SMA patients, and will inform clinical trial planning.


Assuntos
Cooperação Internacional , Atrofia Muscular Espinal/epidemiologia , Sistema de Registros/estatística & dados numéricos , Adolescente , Adulto , Fatores Etários , Idoso , Australásia/epidemiologia , Criança , Pré-Escolar , Europa (Continente)/epidemiologia , Feminino , Inquéritos Epidemiológicos , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Atrofia Muscular Espinal/fisiopatologia , América do Norte/epidemiologia , Adulto Jovem
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