BME100 s2014:W Group6 L3
BME 100 Fall 2013  Home People Lab WriteUp 1  Lab WriteUp 2  Lab WriteUp 3 Lab WriteUp 4  Lab WriteUp 5  Lab WriteUp 6 Course Logistics For Instructors Photos Wiki Editing Help  
ContentsOUR TEAMLAB 3A WRITEUPTemperature StatisticsRAIIN SENSOR: mean value:96.495 Degrees F standard deviation:2.028 Degrees F Oral Thermometer: mean value:97.079 Degrees F standard deviation:1.076 Degrees F
Pulse StatisticsPulse Oximeter: mean value:87.857 beats/min standard deviation:13.795 beats/min Watch Sensor: mean value:86.734 beats/min standard deviation:16.120 beats/min
Blood Pressure StatisticsBlood Pressure Cuff: mean value: 118.696 mmHg standard deviation: 17.833mmHg Watch Sensor: mean value:112.329mmHg standard deviation:13.563mmHg
ResultsTemperature: ttest = 0.0000708 pvalue = 0.50003 Blood Pressure: ttest = 0.0000243 pvalue = 0.99998 Pulse: ttest = 0.1051 pvalue = 0.9163
AnalysisThis lab used experimental data to compare the measurements provided by a gold standard device and the device being tested for its validity. For temperature, the tvalue describing the difference between the mean body temperature measured by the oral thermometer (the gold standard) and the body sensor (the device being tested) was 0.0000708. This corresponded to a pvalue of 0.50003, indicating that the difference between the two devices was not significant  the data supports the validity of the body sensor. For blood pressure, the tvalue describing the difference between the mean blood pressure measured by the blood pressure cuff (the gold standard device) and the watch sensor (the device being tested) was 0.0000243. This corresponded to a pvalue of 0.99998. This pvalue is very high, indicating that the difference in the means was not significant  the data supports the validity of the watch sensor. For pulse, the tvalue was 0.1051. The pvalue corresponding to this was 0.9163, indicating that there is not a significant difference. There is not significant evidence to support the hypothesis that there is a difference in the mean for the gold standard and the device being tested in any of the three measurements.
Summary/DiscussionThe lab collected data on body temperature, blood pressure, and pulse using a gold standard device and a device of questionable validity for each measurement. This technique was used so that the mean measurement for each of the three types of data being collected could be compared so that it could be determined if there was a significant difference between the gold standard device and its corresponding untested device. This was determined using a student's Ttest and by assessing the pvalue corresponding to each tvalue at an alpha level of 0.05. In no case was their found to be a significant difference and so it could be said that there is not sufficient evidence to reject any of the nongold standard devices.
LAB 3B WRITEUPTarget Population and NeedThe target population is aimed towards outdoor workers who suffer from heat stroke or heat exhaustion. In states like Arizona, the extreme heat puts people who work in construction, landscaping, etc. in great risk of heat stroke and they need something to warn them before it happens. This can be a personal use for those working outdoors on their own accords, or also by companies looking to better protect their employees.
Device Design
Inferential StatisticsTemperature in normal conditions: ttest=1 pvalue=0.832859028 Temperature in outdoor conditions: ttest=0.00096015 pvalue=0.50037627
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