BME100 s2017:Group7 W8AM L3

BME 100 Spring 2017	Home People Lab Write-Up 1 | Lab Write-Up 2 | Lab Write-Up 3 Lab Write-Up 4 | Lab Write-Up 5 | Lab Write-Up 6 Course Logistics For Instructors Photos Wiki Editing Help
OUR TEAM Rafael Aguilar Raneem Asiri Brandon Boyle Joseph Dimodica Margaret Miller Nicole Robinson LAB 3 WRITE-UP Descriptive Stats and Graph Average Heart Rate Scatter plot Average Temp Scatter Temperature values Device Average Standard Deviation Count Standard Error Gold Standard 96.64716049 1.922602071 324 0.106811226 Spree 95.5308642 0.870378299 324 0.04835435 Heart Rate Values Device Average Standard Deviation Count Standard Error Gold Standard 98.08976898 23.03054395 303 1.32307018 Spree 98.95379538 24.87753802 303 1.429177217 Pearson's R for Temperature = 0.192798 Pearson's R for Heart Rate =0.4772 Inferential Stats T-Test Values Test P-Value Significance Heart Rate 0.42712 Not a significant difference Temperature 1.09676E-21 Significant difference Design Flaws and Recommendations Summary for Temperature The Spree Band was shown to be inaccurate when compared to the Gold Standard for temperature. The Spree Band has an average value of 95.53 degrees fahrenheit compared to the average value 96.65 degrees fahrenheit for the Gold Standard. The standard deviation of the Spree Band was 0.8704 and the standard deviation for the Gold Standard was 1.9226. This displays the disparity between the deviation of the value and shows that the Spree Band is inaccurate. The standard error of the Spree Band was 0.0484 and the standard error for for the Gold Standard was 0.106811; the difference between the two different values of standard error displays, surprisingly, that the Spree Band measurements stay closer to the mean. The paired t-test value was 1.09676e-21, which is significantly smaller than 0.05, thus displaying that there is no correlation. The Pearson’s Correlation was 0.192798089 which displays that there is no correlation between the two variables once again. The calculated T-Test Value along with the Pearson’s Correlation Coefficient, r, together display a drastic difference between the two thus exhibiting that the Spree Band is unreliable. Summary for Heart Rate The Spree Band was shown to be accurate when compared to the Gold Standard for heart rate. The Spree Band has an average value of 98.95 BPM compared to the average value 98.09 BPM for the Gold Standard. The standard deviation of the Spree Band was 24.88 and the standard deviation for the Gold Standard was 23.03. This minimal difference between the two standard deviations shows that the Spree Band is accurate in the sense of closeness to the Gold Standard. The standard error of the Spree Band was 1.32307018 and the standard error for for the Gold Standard was 1.429177217; the difference between the two different values of standard error displays that the Spree Band measurements stay closer to the mean. The paired t-test value was 0.4271161925, which is bigger than 0.05, thus displaying that there is closeness between the measurement of data. The Pearson’s Correlation r-value was 0.192798089 which displays even further that this device, when compared to the Gold Standard, accurately measures heart rate. The calculated T-Test Value along with the Pearson’s Correlation Coefficient, r, together display a correlation between the two thus exhibiting that the Spree Band is reliable. Experimental Design of Own Device If we were to run an experimental design of our own, we would use a transcranial doppler ultrasound as the gold standard to compare our device to. This device is what is used currently to detect if someone is having an ischemic stroke. It is also used to determine if the medication/operation is working by showing when blood flow to the brain is returning to normal. A solid sample size we would shoot for is about 500 patients; 250 using transcranial doppler ultrasound, and 250 using our doppler ultrasound device to detect whether or not a stroke is happening. The reason for the 2 groups is to keep the experiment as controlled as possible considering the fact that we would more than likely be unable to use one patient to test both devices. This is due to the fact that a single patient most likely will not have more than one stroke during the time frame of the study. After the study is completed we would compare the results of the transcranial doppler ultrasound and the doppler ultrasound patch with an unpaired T-test. We would hope that the p value is greater than .05 to show that there is a correlation between the two devices. A correlation would indicate that our device is at the same level as the gold standard and can act as an accurate test in determining when a stroke is occurring.