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The EFPT was designed with the need to determine how people post stroke were doing in the real world. It determines what the patient can do and what kind of support he needs to be able to perform that function. In other words can this person cook, make a telephone call, manage their medications or pay a bill? In comparison, previous tools have been set up to assess the patient but not in the actual home setting.
There are several types of variables. These include independent and dependent, extraneous, demographic, moderator and mediator, and operational zing. Most of the variables in this case are listed in the explanatory table 2 on page 449 of the study. There are demographic variables which include race and gender, as well as education and age. There are also operational zing variables which include tasks and components. There was some variation created as both mild stroke and moderate stroke were studied
Reliability has to do with the reduction of variables. For instance reliability is important in selecting and using a scale for study. Reliable instruments make the value of a study much higher. When a tool or study is reliable, it is consistent. For example, if you ask the same set of questions to the same group of patients at two different times, the answers should me the same. This makes the instrument reliable. EFPT was tested on a group of 10 participants in which the consistency of the sample results showed to be .94 which shows a high reliability rate.
Validity is the determination that the instrument actually describing what is happening or moving the information from abstract to concrete. It is usually seen as having three primary types. Those are content validity, predictive validity, and construct validity (Burns, et.al. 2007). Validity, like reliability happens in degrees. Nothing is completely reliable and no instrument is completely valid. Using an
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