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When the confidence interval is 95%, what is the statistical probability that the observed results or differences between study and control groups are due purely to chance?

A Summative evaluation is done during the program (while it is forming) and allows planners to make adjustments.

Which type of data is displayed on a frequency distribution table, histogram, and frequency polygon?

What payment system is based on an office visit and is always the same regardless of the services rendered?

Americans are viewed as ________.

The experimental group is the group in the study that does not receive the intervention.

Continuous data use which of the following scales of measurement?

Since its inception in 1965,  Title XVII of the Social Security Act is a federal health insurance program to provide health care for adults 65 and older? 

Questions 21-24 Two hygienists were interested in assessing thoroughness of plaque removal using manual toothbrushing versus power toothbrushing for residents in long-term care facilities.  They conducted an educational seminar for Certified Nursing Assistants (CNA) at a local facility.  They divided the CNA’s who participated into three groups and instructed them in proper care of the oral cavity for their patients.  One group received toothbrushing instructions using a manual toothbrush.  The second group received toothbrushing instructions using a powered toothbrush.  The third group did not receive any specific toothbrushing instructions. At the end of two weeks a plaque-free score was collected for each resident under the care of the participating CNA’s.  The mean plaque-free score in the power toothbrushing group was 85.  The most commonly occurring score in the manual toothbrushing group was 62 and this group’s mean was 59.  The mean score in the group that received no toothbrushing instructions was 20.                   21. What type of study is this?

Which of the following is the most common chronic disease of childhood?