NR 716 Week 5 Discussion; Analyzing Descriptive Statistics

1. Perform the following calculations:

a. Based on the data set provided, calculate the average percentage of patients

with uncontrolled diabetes (HbA1c>7) both pre-implementation and post-

implementation.


Pre-intervention:
9
=90 %
10

Post-intervention
5
=50 %
10


b. Next, calculate the mean pre-implementation and post-implementation

HbA1c values for patients involved in this practice change project.


Pre-intervention:

∑ Pre intervention
Outcomes n

7.4 +7.8+7.1+6.8+7.4+ 7.8+7.8+8.2+7.5+11.8
10
79.6
=7.96
10

Mean is 7.96



Post-intervention

∑ Post intervention Outcomes
n

6.4 +6.7+6.7 +6.8+6.9+7.1+7.4+ 7.7+8+11.3
10

, 75
=7.5
10

Mean is 7.5


c. Now calculate the pre-implementation and post-implementation median score

of HbA1c levels.


Pre-implementation:

6.8, 7.1, 7.4, 7.4, 7.5, 7.8, 7.8, 8.2, 11.8
7.5+7.8
Median= =7.65
2

Median is 7.65

Post-implementation:

6.4, 6.7, 6.7, 6.8, 6.9, 7.1, 7.4, 7.7, 8, 11.3
6.9+7.1
Median= =7
2

Median is 7




d. Next, calculate the pre-implementation and post-implementation standard

deviation of HbA1c levels of patients involved in the practice change project. The

standard deviation will determine the spread of increase or decrease in HbA1c

levels.


Pre-implementation
n

s = ∑ ( xi−x̄ )12
2

i=1