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
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
