Posted: September 10th, 2017

Exercise 19

1. According to the relevant study results section of the Darling-Fisher et al. (2014) study, what categories are reported to be statistically significant?

2. What level of measurement is appropriate for calculating X2 statistic? Give two examples from Table 2 of demographic variables measured at the level appropriate for X2.

3. What is the X2 for U.S. practice region? Is the X2 value statistically significant? Provide a rationale for your answer.

4. What is the df for provider type? Provide a rationale for why the df for provider type presented in Table 2 is correct.

5. Is there a statistically significant difference for practice setting between the Rapid Assessment for Adolescent Preventive Services (RAAPS) users and nonusers? Provide a rationale for your answer.

6. State the null hypothesis for provider age in years for RAAPS users and RAAPS nonusers.

7. Should the null hypothesis for provider age in years developed for Question 6 be accepted or rejected? Provide a rationale for your answer.

8. Describe at least one clinical advantage and one clinical challenge of using RAAPS as described by Darling-Fischer et al. (2014).

9. How many null hypotheses are rejected in the Darling-Fischer et al. (2014) study for the results presented in Table 2? Provide a rationale for your answer.

10. A statistically significant difference is presented between RAAPS users and RAAPS nonusers for U.S. practice region, X2=29.68. Does the X2 result provide the location of the difference? Provide a rationale for your answer.

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