WEEK 3 PROBLEMS30
1.
RD
RR
R
O
POINTS
= 0.367-0.175= 0.192
= 0.367/0.175= 2.097
= (0.367/0.633)/ (0.175/0.825)= 2.74
C.) One can be 95% confident that the true value will between the upper and lower limit
2.
Df= (2-1)(4-1)= 3
Alpha= 0.05
Reject H0 if 2> 1
1. E. a and c
2. 275/399= 68.9%
3. Upper limit CI = _0.73408_
Lower Limit CI = _0.64392_
4. D. a and c
5.
Observed Treatment Success
DOT
Yes
No
Total
Yes
186
64
250
No
86
60
146
Unknown
3
0
3
Total
275
124
399
Expected
Treatment Success Values
DOT
Yes
No
HLTH 501
EXCEL EXERCISE WEEK 2
Refer to the Histogram tab in the Excel Assignment Spreadsheet and answer the following.
What percent of the sample weighs 170 lbs. or less? _34.48 % 1 pt
How many subjects weigh more than 200 lbs? _17_ 1 pt
What percent of
HLTH 501
EXCEL EXERCISE WEEK 7
Suppose we want to merely determine whether or not subsequent blood pressure measurement where higher or
lower than one another. One approach would be to use the Sign Test.
Refer to the Sign Test tab in the assignment spread
HLTH 501
WEEK 6 PROBLEMS30 POINTS
10 points each. Place answers in the following table:
1.
Employee
Sick Days Taken in
12 Months Prior to
Program
1
2
3
4
5
6
7
8
8
6
4
12
10
8
6
2
Sick Days Taken
in 12 Months
Following
program
7
6
5
11
7
4
3
1
Difference
HLTH 501
WEEK 7 PROBLEMS30 POINTS
10 points each. Place answers in the following table:
1. Compute the prevalence of hypertension at baseline.
Prevalence: (45+207)/1,250 =
252/1,250 =
0.2016=
20.2%
Compute the prevalence of hypertension at 2 years.
Preval
HLTH 501
WEEK 8 PROBLEMS30
POINTS
15 points each. Place answers within the Word document below.
1.
Complete the table below.
Interval
in
Years
02
24
46
68
810
Number
At Risk
During
Interval,
Nt
25
24
22
16
10
Average
Number At
Risk During
Interval,
Nt* =N
HLTH 501
EXCEL EXERCISE WEEK 8
Refer to the Survival Graph tab in the Excel Assigment spresdsheet.
Sixty percent of the subjects can be expected to survive for how long? _22_months 2 pts
After 5 months of treatment what proprtion of the patients are still
HLTH 501
EXCEL EXERCISE WEEK 6
Refer to the Incidence tab in the assignment spreadsheet:
How many patients are represented in these data?_23_ 2 pts
How many patients had disease at the start of the study?_13_ 2 pts
How many patients became diseased?_9_ 2