We studied 6,489 patients (% males) from Primary Health (%) and Specialised Health (%), with age (mean) = ± years by aleatory sampling. % of patients achieved an adequate control with 2mg/day of pitavastatin. General satisfaction with the treatment was points (95% CI: -). Patients who followed the treatment (65%) showed better data of satisfaction with the drug ( [95% CI: -]), of global satisfaction ( [95% CI: -]) and their satisfaction with the drug efficiency was higher ( [95% CI: -]) than in the patients who did not finish the treatment ( [95% CI: -]; [95% CI: -] and [95% CI: -], respectively), P < .0001, without any difference between the two primary care systems.
The term unobtrusive measures was first coined by Eugene Webb, Campbell, Schwartz, and Sechrest in a 1966 book, Unobtrusive methods: Nonreactive research in the social science ,  in which they described methods that don't involve direct induction of data from research subjects. For example, the evidence people leave behind as they traverse their physical environment is unobtrusive. Unobtrusive methods get around biases, such as the selection bias and the experimenter's bias , that result from the researcher and his intrusion. Consequently, however, these methods reduce the researcher's control over the type of data collected. 
In participant observation, the researcher intervenes in the environment. Most commonly, this refers to inserting himself/herself as a member of a group, aimed at observing behavior that otherwise would not be accessible. Also, behaviors remain relatively natural, thereby giving the measurements high external validity. Case Studies are a type of observational research that involve a thorough descriptive analysis of a single individual, group, or event. They can be designed along the lines of both nonparticipant and participant observation. Both approaches create new data, while archival research involves the analysis of data that already exist. A hypothesis is generated and then tested by analyzing data that have already been collected. This is a useful approach when one has access to large amounts of information collected over long periods of time. Such databases are available, for example, in longitudinal research that collects information from the same individuals over many years.
Special qualitative analysis software tools like help the researcher to catalog, penetrate and analyze the data generated (or, in archival research found) in a given research project. All forms of observational or field research benefit extensively from the special capabilities of a dedicated data anlaysis tool like .