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Word Count: 289
1 Blackouts common causes numerous by Anita Srikameswaran Post-Gazette Staff Writer 2 The hypothesis would be Blackouts are caused by vasovagal reflex what happens when a needle needs to be inserted into the skin to draw blood 3 The independent variable would be the vasovagal reflex 4 The dependent variable would be the percentage of blackouts caused by vasovagal reflex the independent variable 5 This article has many control groups Seizures which is caused by overactivity of neurons in the brain Hypoglycemia which is low blood sugar 6 The Population is to people that have blackouts seizures or have low blood sugar and heart irregularities 7 The sample is the people with problems of blackouts which is sixty percent Twenty percent is caused cardiac problems the other twenty percent of the time the doctors fail to find any causes 8 The article did not provide this information 9 The article cannot be answered due to question 8 10 The instrument used from the dependent variable would be an EKG electrocardiogram to check the heart for rhythm problems 11 In this article there were no charts graphs or tables used Sixty percent of blackouts are caused by vasovagal reflex 12 The hypothesis was confirmed 13 To improve this article and make it more accurate you could conduct more experiments tests with more people who blackout have seizures sleep apnea people with hypoglycemia and do these tests more than once Also conducts these tests with people who do not blackout or have never had any episodes of fainting spells to see their condition of their heart The people could be babies teenagers children young adults older adults and those with fainting spells Ways to improve the accuracy of the results would be to have a majority of diverse people with good and bad heart problems
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