Based on the exclusion and inclusion criteria and by means of a diagnostic questionnaire, complemented with the HIT-6, we have made an inventory of their headache characteristics and we presented a detailed description of their headache features.
A sample of 400 female employees from the services sector answered a self-administered questionnaire complemented with 30 interviews.
We hypothesized that a single-item questionnaire complemented with examples of the indications and medicines that are expected to be more frequent in the population studied could yield similar estimates of the prevalence of drug utilization to an extended multi-item questionnaire addressing the utilization of medicines for several indications.
It is mainly a questionnaire, complemented by some laboratory values and performance tests.
In a case-control study, patients with and without symptomatic knee osteoarthritis (OA) were questioned by means of a standardised questionnaire complemented by a semi-standardised interview.
The results of the questionnaire were complemented by scholarly research conducted by the authors.
The questionnaire was complemented by Part D (background information) to collect demographic information.
To obtain statistical data a survey design was employed, research methods including postal questionnaires complemented by selected interviews and a small amount of informal observation.
However, the information received through the questionnaire is gradually complemented by other data sources; from the Public Employment Service for those who have been searching for work through an employment office, from the National Health Board for those who apply for a permit to work as medical doctors, dentists, nurses etc.
This leads to the objective to increase adherence to guidelines, to put into practice what is considered an improved treatment, and in this process the cases in the questionnaire may be complemented by a structured study program showing the relative impact of different risk factors.
