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Does Advil decrease the pain in a headache?

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After 10 weeks of applied treatment , i asked them to rate their pain in each headache before and after Advil to see if there is alleviated pain.

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My control group will be the group of 75 individuals who will not receive Advil, but will take a placebo pill (sugar pills).

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My results were published in a pharmaceutical newspaper. Most participants continued to use Advil, whenever in pain . Advil is now considered an effective drug.

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i found 150 men and women all between ages 21-28 to participate in my study. Half took the same dose (50 mg) of Advil and the other half too a fake tablet , when they have a headache .

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i matched people by age 21-28, men and women. half had Advil half did not.

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I randomized all 150 people and their results on whether Advil is effective or not. they are because 90% said yes.

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with a sample size of 150, my margin of error 1.4% of 150. This low margin is good and means my results are a good representation of the population.

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the explanatory variable is which treatment that each received, with or without Advil

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i blinded half of the subjects. 75 took real advil and 75 were given placebo.

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i can replicate this study with 150 new subjects, to confirm the results are significant. i will find a new pharmacy to choose volunteers and choose an older age group 31-49.

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At the end of the 10 weeks, all results were examined.those who took the real Advil reported a decrease in headache pain, and those who received the placebo pill did not report a decrease in pain.

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150 subjects volunteered to participate in this study. half were assigned to take 50 mg Advil whenever they received a headache. the other half were given a placebo pill thinking it was a regular pill.

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potential lurking variables could be metabolism rates, weight of individual, pain level of headache, or even pain tolerance. if i chose a more specific group of people next time then these lurking variables would minimize.

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my experimental units were found at the local pharmacy. We got permission from the store managers to do so.