An observational study in Haemophilia, sponsored by Universidad de Murcia. Status unknown at 1 site in Spain. Open to male participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2015-10-20.
Sponsored by Universidad de Murcia · Observational
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.
866 studies on the registry are indexed under Hemophilia A; 137 are open to participants now.
This study's planned enrollment of 100 is above the median of 80 across 314 observational studies indexed under Hemophilia A.
Browse Hemophilia A studies →Universidad de Murcia is the lead sponsor of 77 studies on the registry; 16 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients with haemophilia
Exclusion Criteria:
Group of patients who we will consult the characteristics of the scale designed and will be made the statistical calculations of validity, reliability and reproducibility
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
Time frame: Screening visit
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
Time frame: Screening visit
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
Time frame: Screening visit
This study is status unknown, as verified in Sep 2015. You cannot join it, but the record below documents what was studied.
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Universidad de Murcia