BME100 f2014:Group23 L3

BME 100 Fall 2014	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 Name: Danielle Beach Name: Theodore Kyriacou Name: Kassandra Flores Name: Brady Dennison Name: Cesar Marin Name: Joshua Kahn LAB 3A WRITE-UP Descriptive Statistics The mean for the temperatures taken with the thermometer, or gold standard device, was 97.527 degrees Fahrenheit. The standard deviation for the temperatures taken with the thermometer was 0.861 degrees Fahrenheit. The standard error for temperatures taken with the thermometer was 0.0011 degrees Fahrenheit. The mean for the temperatures taken with the spree band was 103.401 degrees Fahrenheit. The standard deviation for the temperatures taken with the spree band was 3.00 degrees Fahrenheit. The standard error for the temperatures taken with the spree band was 0.0040 degrees Fahrenheit. The mean for the heart rates taken with the pulse ox was 91.684 beat per minute. The standard deviation for the heart rates taken with the pulse ox was 21.136 beats per minute. The standard error for the heart rates taken with the pulse ox was 0.0286 beats per minute. The mean for the heart rates taken with the spree band was 92.823 beats per minute. The standard deviation for the heart rates taken with the spree band was 21.485 beats per minute. The standard error for the heart rates taken with the spree band was 0.0328 beats per minute. Results For the Spree Band versus gold standard thermometer, our t-test and r squared value were 2.4948E-239 and -0.01691432, respectively. For the Spree Band versus gold standard heart rate measurement, our t-test and r squared value were 0.49486046 and 0.89744578, respectively. Analysis By comparing the heart rate readings between the Gold Standard thermometer and the Spree band, a T-Test value of .494 was acquired. Since the P-value is higher than .05, the data can be deemed statistically significant, meaning that there is a correlation between the Spree Band and the Gold Standard. This also concurs with the Pearson's R Value which was .897, close to a value of 1, meaning again that there is a positive correlation between the two sets of data. The Spree Band could accurately measure the heart rate. The Gold Standard and the Spree band data concerning temperature were also compared, revealing a T-Test value that was below the x=.05 significance standard, at 2.5 x 〖10〗^(-239). The Spree Band temperature readings can then be considered inaccurate, without any correlation whatsoever. This also agrees with the Pearson's R value of -.017. Summary/Discussion The biggest design flaw in the Spree Band was the temperature monitor. It gave a general reading of "high," "medium," and "normal," which are all broad and essentially useless. Along with that, according to the data, this part of the device was completely inaccurate. It is very difficult to monitor core temperature with the surface of the skin. However, the device could be improved by giving an actual estimation. The device could measure the temperature of the skin, and estimate based on that reading what the core temperature might be, and record that information. Since the device is pressed up against the skin and restricting air flow, it would tend to heat up that specific area of the skin, potentially causing a misread. If the device had a greater surface area to measure, with a different material to prevent sweating and allow for better air flow, it could get more accurate readings. Another flaw in the design was the occasional inaccurate readings in the heart rate sensor. In general, the device did manage to gain a close reading, but it tended to fluctuate suddenly. This could be due to movement, or the sensor itself in the headband that malfunctioned on occasion, causing errors in the reading. This could also be improved if the device was close to a larger primary artery, where it would be much easier to detect the heart rate. One last design flaw was the price, and although it uses new technology to supposedly read body temperature and heart rate accurately, it was nearly 300 dollars. It is an unfashionable headband that sticks out, is uncomfortable, and simply isn't worth such a high price. The device could be made much simpler by attaching to the forearm or upper arm, and the sensors would not have to be as expensive to take the same measurements. To give a comparison, the new apple watch costs near the same, yet has the same technology including a touch screen and is still fashionable. LAB 3B WRITE-UP Target Population and Need The target population is anyone who wants to monitor heart rate and temperature from the convenience of their phones. This kind of product is needed because obese and elderly people, who are more likely to have blood pressure problems, can monitor their blood pressure more easily than through previous measuring methods. Device Design Brady Inferential Statistics Cesar Graph