Question

Diabetes patients from a diabetes clinic were invited to apply for a free of charge, a long-term exercise program. After eligibility screening, 39 participants enrolled and completed > 65% of the 108 exercise sessions. Among those who did not apply for the program, 85 were included in the control group. Data related to Hba1c, BMI and 10 years risk of CAD, etc. were collected at the clinic two weeks before the start of the exercise program (baseline) and two weeks after exercise program at 9- month (final). Split-Plot analysis of Variance (time *group) with repeated measures ( a special type of repeated measures ANOVA) was performed. The table below shows the time-by-group test results for HbA1c and 10-year risk of CAD (level of significance alpha =.05. which of the following statement (s) is/are appropriate for the test results? Please select All that apply.

1. A significant time-by-group interaction effect was identified for 10-year risk of CAD
2. The mean 10-year risk of CAD at 9- month in the Exercise Group is significantly lower than that in the Control group.
3. The mean HbA!c at 9-month in the Exercise Group is significantly lower than that in the Control group.
4. A significant time-by-group interaction effect was identified for HbA1c
5. The decrease in HbA1c levels from baseline to 9-month in the Exercise Group is significantly greater than that in the Control Group.
6. The decrease in 10-year risk of CAD from baseline to 9-month in the Exercise Group is significantly greater than that in the Control group.

1. A significant time-by-group interaction effect was identified for 10-year risk of CAD
2. The mean 10-year risk of CAD at 9- month in the Exercise Group is significantly lower than that in the Control group.
3. The mean HbA!c at 9-month in the Exercise Group is significantly lower than that in the Control group.
4. A significant time-by-group interaction effect was identified for HbA1c
5. The decrease in HbA1c levels from baseline to 9-month in the Exercise Group is significantly greater than that in the Control Group.
6. The decrease in 10-year risk of CAD from baseline to 9-month in the Exercise Group is significantly greater than that in the Control group.

	Control Group (n=85)		Exercise Group (n=39)		F	p
	Baseline	Final	Baseline	Final
HbA1c (%)	7.95±0.87	7.39±0.92	7.71±0.85	6.83±0.62	18.025	<0.001
10-year risk of CAD	19.29±10.27	17.32±9.54	16.56±9.46	12.12±7.34	24.676	<0.001

Answer 1

The statement which are appropriate according to the test results are :-

B .The mean 10-year risk of CAD at 9- month in the Exercise Group is significantly lower than that in the Control group.

C. The mean HbA!c at 9-month in the Exercise Group is significantly lower than that in the Control group.

E. The decrease in HbA1c levels from baseline to 9-month in the Exercise Group is significantly greater than that in the Control Group.

F. The decrease in 10-year risk of CAD from baseline to 9-month in the Exercise Group is significantly greater than that in the Control group.