Haemophilia Clinical Trial
— ADHAESIONEOfficial title:
Development of a Specific Measure for Assessing Adherence in Adult Patients With Hemophilia. The Haemo-Adhaesione Questionnaire
Research project for the development, construction and validation of a questionnaire of adherence to treatment in adult patients with hemophilia. It aims to build a scale according to five relevant dimensions of adherence to treatment: 1) physician-patient relationship, 2) knowledge of the disease, 3) previous bleeding problems, 4) knowledge of future consequences and difficulties, and 5) benefits of treatment.
Status | Recruiting |
Enrollment | 100 |
Est. completion date | May 2016 |
Est. primary completion date | January 2016 |
Accepts healthy volunteers | No |
Gender | Male |
Age group | 18 Years to 65 Years |
Eligibility |
Inclusion Criteria: - Patients diagnosed with hemophilia A or B. - Patients over 18 years of age. Exclusion Criteria: - Patients with neurological or cognitive impairments that hinder oral and written comprehension. - Patients who have not signed the informed consent document |
Observational Model: Cohort, Time Perspective: Cross-Sectional
Country | Name | City | State |
---|---|---|---|
Spain | Universidad de Murcia | Murcia |
Lead Sponsor | Collaborator |
---|---|
Universidad de Murcia |
Spain,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Phase substantive for the creation of a scale | The theoretical framework and objectives for the creation of the scale is created. The questionnaire was developed teóricasdel dimensions and items of each dimension are identified. In this testing phase, the pilot is 5 Hematologists physicians experienced in hemophilia (no contact between them) and a sample of the target population (± 12 patients with hemophilia). The structure of this phase include: Identify and define the theorical framework of customs and attributes. Identification of behaviors that represent the attribute. Test design specifications. Construction of the items. External judgment by judges Discussion with the target population Analysis of item-objective congruence Analysis of the interview with patients and selection of items Selection of an initial set of items Application of the first version and analysis items Selection of items in accordance with standard psychometric |
Screening visit | No |
Primary | Structural phase for the creation of a scale | This phase is carried out the questionnaire to a pilot sample (± 50 patients with hemophilia) and the choice of format is made. Similarly, an analysis of differential functioning or bias of the items is performed. The structure of this phase include: Implementation of the final scale Determination of ground and ceiling effect of the scale Analysis of the structure of the scale Identifying relevant dimensions Calculate the reliability Determination of the reproducibility Establishing convergent and discriminant validity |
Screening visit | No |
Primary | Empirical phase for the creation of a scale | This phase is carried out applying the scale to a general sample (patient 100-150). After the statistical and convergence and discriminant analysis (other scales) and the study of responsibility (with drug consumption data) will be made. The structure of this phase include: Selecting one or more external criteria To establish concurrent validity Checking empirical hypotheses Determination of responsiveness Study interpretability Design guidelines for the administration and scoring of scales Design cutoff scores |
Screening visit | No |
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