BME100 f2016:Group6 W1030AM L3
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LAB 3 WRITE-UP
Descriptive Stats and Graph
The paired t-test and Pearson's r coefficient were calculated between the gold standard and Spree, for both temperature and heart rate.
Design Flaws and Recommendations
There were multiple 0 bpm readings recorded for both the gold standard and the Spree headband. Due to the data being from previous classes, it is unknown whether these zeroes were inserted due to missing data or if the machines had errors in their sensors, resulting in a reading of zero. For future research, missing data should be left blank instead of inserting a value of 0 in order to prevent inaccurate statistics being recorded.
For temperature in the spree headband there was not much variation as most values came out as 95 degrees where the thermometer came out with more accurate values.
Experimental Design of Own Device
In order to validate our product, which measures HR, temperature, Blood oxygen levels, and includes a GSR stress sensor, we are looking at a very diverse and large sample size to compare control groups with many changing variables. A control group and changing variable groups are not hard to find given there are 100 Million Americans who suffer of chronic pain and whom we have targeted as our patients. For obvious reasons we won't need to test on all 100 Million persons, but rather a sample size of around 5000 people should give very accurate results for validation on our device. 1000 points in that data set would be held as our control and the other 4000 would be testing the various features of the device versus the golden standard; in this case we would need to compare against the gold standard of each component for best accuracy. The best way to statistically compare the data of the control and the tested is to find little to no difference in the measurements taken by clinically proven devices versus our monitor. Doing this will show how accurate our device is, as well as show how valid our device stands next to proven devices.