subject selection
As is the case with all type of subject a few reliability studies influences the external validity of the study; the study results can be generalized only on to the type of subjects
studied Therefore, the reliability of an instrument should be determined using the individuals on whom in the instrument will be used practice. if the measure is a clinical one, it is best to determine its reliability on patients who would ordinarily require this measurement as part of their care. Watkins and associates did just this in their study of the reliability of knee range-of-motion measurements. In fact, they even divided their patients into diagnostic categories to determine whether the measurements were more reliable for patients with certain types of knee dysfunction that inappropriate use normal subjects to establish the reliability of clinical measures has the potential to inflate reliability estimates because normal subjects may be easier to measure y vi- patients. Pain, obliteration of landmarks be and cause of deformity, or difficulty following directions because of neurological impairment may make it difficult to take measurements in patients If a researcher ultimately wishes to determine norms for certain characteristics, it is appropriate for to determine the reliability of measurements using normal subjects. If the measurement in using question is part of a screening tool, such as a flexibility test that might be administered at a fitness fair, then a broad sampling of the individuals likely to be screened should be used to establish the reliability of the measurement.
เลือกหัวข้อ เป็นกรณีที่ มีชนิดของหัวข้อทั้งหมดกี่ศึกษาความน่าเชื่อถือ มีผลต่อมีผลบังคับใช้ภายนอกการศึกษา ผลการศึกษาสามารถตั้งค่าทั่วไปไปยังชนิดของเรื่องเท่านั้น studied Therefore, the reliability of an instrument should be determined using the individuals on whom in the instrument will be used practice. if the measure is a clinical one, it is best to determine its reliability on patients who would ordinarily require this measurement as part of their care. Watkins and associates did just this in their study of the reliability of knee range-of-motion measurements. In fact, they even divided their patients into diagnostic categories to determine whether the measurements were more reliable for patients with certain types of knee dysfunction that inappropriate use normal subjects to establish the reliability of clinical measures has the potential to inflate reliability estimates because normal subjects may be easier to measure y vi- patients. Pain, obliteration of landmarks be and cause of deformity, or difficulty following directions because of neurological impairment may make it difficult to take measurements in patients If a researcher ultimately wishes to determine norms for certain characteristics, it is appropriate for to determine the reliability of measurements using normal subjects. If the measurement in using question is part of a screening tool, such as a flexibility test that might be administered at a fitness fair, then a broad sampling of the individuals likely to be screened should be used to establish the reliability of the measurement.
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