Cost-effectiveness of the Treatment of Attention Deficit/Hyperactivity Disorder With Methylphenidate Immediate-release in Brazil
The first objective is to measure the QALYs (Quality Adjusted Life Years) of Brazilian children and adolescents, submitted to methylphenidate immediate-release treatment for Attention Deficit Hyperactivity Disorder (ADHD). For this, the Health Utility Index scale (HUI) will be completed by the patient and/or family, in two moments of an observation study with immediate-release methylphenidate: at the baseline and 6th month of treatment in the follow-up. The results provides information to calculate the utility measure and determine the QALYs (Quality Adjusted Life Years). After this, for the cost-effectiveness of the treatment, it will be used a Markov model of decision analysis, and a Monte Carlo simulation with 10,000 random trials.
Subjects will be submitted to immediate-release methylphenidate treatment in a maximum dose of 0.5mg/kg/day. The total treatment monitoring is 06 (six) months, and patients will be evaluated at baseline, first, third and sixth month. The HUI rating scales are fulfilled by parents and patients (if >12 years old only) at baseline and 6th month. The period for inclusion of new patients comprises from 01/01/2011 to 31/12/2013.
Studie Overzicht
Toestand
Gedetailleerde beschrijving
Currently, Brazil has no estimates for quality of life, and/or utilities for ADHD economy analysis. Such data is necessary to calculate the QALYs (Quality Adjusted Life Years). Thus, the investigators will implement the Health Utility Index tool (HUI) to be completed by the patient and/or family, in two moments of an observational study with immediate-release methylphenidate: at baseline and 6th month of treatment. The determination of the QALY as an outcome in the decision analysis is justified because HUI incorporates into a single measure morbidity and mortality. The results of the cost-effectiveness study will assist government agencies in the process of decision making.
To determine the cost-effectiveness of methylphenidate immediate release available in the Brazilian market, the investigators will use a Markov model of decision analysis. The development of the model and analysis of the results will adopt the standards established in the Methodological Guidelines of the Brazilian Ministry of Health, and the perspective will be of the Brazilian National Health System. Medications prices will be obtained through the Board of Market Regulation of Medicines (CMED) at the site of ANVISA (National Health Surveillance Agency). For the treatment strategy that provides greatest cost ratio it will be calculated the incremental cost-effectiveness, compared to the lower cost. To estimate more accurately the impact on life, a Monte Carlo simulation with 10,000 random trials will be conducted.
This is a one treatment group and observational study, with 140 patients, and no controls. Where indicated, it will be suggested the use of 10 mg methylphenidate in a maximum dose of 0.5 mg / kg / day. The total treatment monitoring is 06 (six) months, and patients will be evaluated at baseline, first, third and sixth month. The HUI rating scales will be fulfilled by parents and patients (if >12 years old only) at baseline and 6th month. The period for inclusion of new patients comprises from 01/01/2011 to 31/12/2013.
Studietype
Inschrijving (Werkelijk)
Contacten en locaties
Studie Locaties
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RS
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Porto Alegre, RS, Brazilië, 90035-003
- Hospital de Clínicas de Porto Alegre
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- Symptoms of attention deficit/hyperactivity disorder with impairment
- Children and adolescents (age from 06 to 18 years old)
- absence of contraindication for the use of methylphenidate immediate release
Exclusion Criteria:
- Contraindication methylphenidate immediate release use
- Neurological diseases
- Discordance with the informed consent form
- IQ<70
- Neurological diseases
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
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Swanson, Nolan, and Pelham Rating Scale (SNAP-IV)
Tijdsspanne: Baseline, 1th, 3rd and 6th month
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Baseline, 1th, 3rd and 6th month
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Health Utility Index
Tijdsspanne: Baseline and 6th month
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Baseline and 6th month
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Medewerkers en onderzoekers
Medewerkers
Onderzoekers
- Studie stoel: Luis A Rohde, MD, PhD, Hospital de Clínicas de Porto Alegre
- Hoofdonderzoeker: Carlos R Moreira Maia, MD, Hospital de Clínicas de Porto Alegre
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 100540 (Andere identificatie: Comitê de Ética em Pesquisa do Hospital de Clínicas de Porto Alegre (CEP/HCPA))
- U1111-1131-1903 (Andere identificatie: Universal Trial Number)
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