HLTH-2400 Lecture Notes - Lecture 4: Heart Rate Monitor
Document Summary
Surveillance needs: just looking at the data. Understand your goal before putting any measurement tools in place. Journal may be more personal, more accurate (possibly), processing and categorizing the information is harder. Nhnes- interviewer goes to the home to ask questions. Can cause bias in data: people lie. Interviewer can be bias based on race or gender of the person if they can see them. Good example of interval data is temperature. Ratio- height or weight would be good examples. Unobtrusive- don"t affect the results: work to stay out of the way. Tell you to wear the heart rate monitor, tell me how you felt during your walk and can also see how your heart rate monitor showed you. It is not taking a survey on a computer just because its electronic: that would be self-report. Instrument is measuring what we want it to measure.
