OUR TEAM


Name: Nick Kilpatrick Role(s)

Name: Alexander Bugarin Role(s)

Name: Nayobe Bivins Role(s)


LAB 2 WRITEUP
Descriptive Statistics
Experiment 1: Human Study
LPS Dosage

0mg

5mg

10mg

15mg

Averages

3.834

8.932

61.622

657.941

Standard deviation

1.523010177

1.593931547

30.11069386

212.9429762

End point

10

10

10

10

Standard error

0.481618106

0.504045412

9.521837451

67.33848166


Experiment 2: Rat Study
LPS Dosage

0mg

10mg

Average

10.516

11.112

Standard deviation

2.225551617

7.402885924

End point

5

5

Standard error

0.995296941

3.310671231


Results
Experiment 1: Human Study
For the human subjects, the ttest values are as follows:
Posthoc Tests

ttest values

0mg vs 5mg

8.59631E07

0mg vs 10mg

9.94377E06

0mg vs 15mg

1.39436E08

5mg vs 10mg

3.01859E05

5mg vs 15mg

1.57101E08

10mg vs 15mg

6.4824E08


A Bonferroni corrected pvalue to achieve significance of 0.0083333 was used in the posthoc testing to counteract the problem of multiple comparisions.
Experiment 2:Rat Study
For out ttest, we found a value of 0.8674035.
Analysis
Experiment 1: Human Study
In humans, the lipopolysaccharide was able to increase the amount of inflammatory proteins. There was statistically significant evidence that there would be an increase in Inflammotin between each dosage (0mg5mg, 0mg10mg, 0mg15mg, 510mg, 515mg, and 1015mg). In order to determine significance, an ANOVA test was used to determine if further analysis between groups was needed. Our ANOVA had a p value of 1.4*10^16. Since this p value is less tha 0.05, we were able to run a posthoc test which used a Bonferroni Correction. After performing the individual ttests all the pvalues were < .00833 meaning we have significance statistical evidence that the LPS was effective.
Experiment 2: Rat Study
In rats, the lipopolysaccharide was not able to increase the amount of inflammatory proteins. By running a t test, we found a p value of 0.8674. There was no statistically significant evidence to support the hypothesis that this inflammation inducing agent can increase the number of Inflammotin since the pvalue from the ttest was greater than .05.
Summary/Discussion
The group designed and conducted an experiment to determine if an inflammation inducing agent can increase inflammotin protein levels. The test subjects include a group of elderly people and a group of rats.
On the first experiment (human study), the dosage of LPS in mg was increased by increments of five (0 mg, 5 mg, 10 mg, and 15 mg). The graph of the results depicts that there is a significant difference in the effect of LPS on inflammatory protein (inflammotin) for elderly people. There was a slight increase of inflammotin protein levels when the LPS dosage is 5 mg and 10 mg. But when the LPS dosage was increased from 10 mg to 15 mg, the amount of inflammotin protein levels in the blood increase significantly. In brief, when the dosage of LPS being administered to humans is
increased the inflammotin protein levels also increase. On the second experiment (rat study), the dosage of LPS in mg was increased by increments of ten (0 mg and 10 mg). However, the graph of the results suggests that there is no significantly statistical evidence of the effect of LPS on inflammotin levels on rats. That is, the amount of inflammotin protein levels in the rats changed slightly/remained constant even when the dosage of LPS given increased from 0 mg to 10 mg.
The group used ANOVA to analyze and determine if the differences between the group of human subjects were significant. The ANOVA produced a pvalue that is <0.05, which means that the differences between the group of human subjects were significant. Subsequently,six posthoc tests were conducted to determine if there is significant difference between the human group individually; all posthoc ttests resulted in a pvalue that is way <0.05 (i.e. <.00833). Therefore, the group concluded that there is statistical evidence that the LPS treatment was effective on humans.
In addition, the group performed a ttest on the rat subjects to determine if there is any significant difference between the two groups of rat subjects. The ttest produced a pvalue that is >0.05 (i.e. 0.8674035), which reveals that there is no significant difference between the two groups of rat subjects and there is no statistical evidence that the LPS treatment was effective on rats.
Since the statistical analysis showed no significance in rats, it should not be used to treat inflammotin. Perhaps retesting using a larger group would show a different result.
