A physical therapist tested a new intervention with patients diagnosed with back

Question

A physical therapist tested a new intervention with patients diagnosed with back injuries. In order to determine if the intervention was more effective than treatment as usual on pain levels, she asked her patients to rate their level of pain at the beginning of each visit throughout the treatment (6-weeks). The hypothesis is that the new intervention would result in lower averages in pain levels than treatment as usual.  

Identify the independent variable (1pt)

Identify the dependent variable (1 pt)

Interpret the finding from the t test analysis. (2 pts) (In order to get credit for this question, you must discuss the findings in relationship to the variables and the research hypothesis.)

M SD t p Levels of Pain (over a 6-week period) 6.32 .07 Treatment-as-usual 6.7 1.3 New intervention 7.2 0.9

Explanation / Answer

Identify the independent variable (1pt)

Ans: Treatment and new intervention

Identify the dependent variable (1 pt)

Ans: Pain levels

Interpret the finding from the t test analysis

Ans: When you perform a hypothesis test in statistics, a p-value helps you determine the significance of your results. ... The p-value is a number between 0 and 1 andinterpreted in the following way: A small p-value (typically 0.05) indicates strong evidence against the null hypothesis, so you reject the null hypothesis.

Here, p > 0.05

Thus, null is not rejected

This tells us that  the new intervention would not result in lower averages in pain levels than treatment as usual.

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