Question

phantom pain is pain that feels as if it is coming from a body part that has been removed. to better understand phantom pain, scientists sometimes ask people who have had amputations to describe their experiences.
in one study, scientists asked people with limb amputations how often they experienced phantom pain. the table below shows their responses.

source data: ephraim, p. l., et al. phantom pain, residual limb pain, and back pain in amputees: results of a national survey. in archives of physical medicine and rehabilitation. copyright 2005 by elsevier inc.

which of the following statements describes the results of this study? select all that apply.
more than 25% of the people felt phantom pain all the time.
more than 75% of the people felt phantom pain at least some of the time.
less than 50% of the people never felt phantom pain.

Explanation:

Step1: Calculate total number of people

$183 + 534 + 193 = 910$

Step2: Check first statement (Always)

Calculate percentage: $\frac{193}{910} \times 100\% \approx 21.21\%$

Step3: Check second statement (Sometimes + Always)

Calculate total count: $534 + 193 = 727$
Calculate percentage: $\frac{727}{910} \times 100\% \approx 79.89\%$

Step4: Check third statement (Never)

Calculate percentage: $\frac{183}{910} \times 100\% \approx 20.11\%$

Answer:

• More than 75% of the people felt phantom pain at least some of the time.
• Less than 50% of the people never felt phantom pain.