Extract:
Studying Alzheimer’s
Years of research have proven that Alzheimer’s disease, along with other types of dementia, elevates the risk of dying early in the majority of patients. In a recent study performed by the Institute of Public Health at the University of Cambridge, scientists set out to determine exactly how long people were likely to survive following the onset of dementia.
Currently, approximately 24 million people throughout the world suffer from the memory loss and orientation confusion that comes with Alzheimer’s disease and other forms of dementia. That number appears to double every 20 years, and experts predict that by the year 2040, there will be 81 million people living with some level of the condition. The more researchers and doctors can learn about what causes the problem, as well as how to treat it, the better prepared they will be to handle these millions of future patients.
To determine how people’s life spans are affected by this medical condition, the scientists studied 13,000 seniors for a period of 14 years. During that time, 438 people developed dementia, the vast majority of whom died. The factors of age, disability, and gender were analyzed to see how they affected longevity as well.
Conclusions from the study showed that women tended to live slightly longer than men, averaging 4.6 years from the onset of dementia, as opposed to 4.1 years for men. The patients who were already weak or frail at the onset of the dementia died first, regardless of age. Marital status, living environment, and degree of mental decline, although relevant factors, were not shown to be influential.
Researchers from the University of Cambridge hope that this new information will help patients, clinicians, care providers, service providers, policy makers, and others who deal with dementia. The more they know, the better they will be able to respond to this heartbreaking condition.
Choose the best summary of the passage.
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A
Marital status, age, and gender seem not to be issues in the longevity of patients who suffer from dementia. Out of 438 people with dementia, the vast majority were dead within a few years.
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B
In hopes of discovering information that can assist with care for dementia patients, Cambridge researchers studied 13,000 seniors. They found that dementia sufferers lived on average slightly longer than four years.
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C
Alzheimer’s is just one form of dementia, a medical condition that affects millions and whose prevalence is expected to increase greatly over the next few decades.
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D
Researchers at Cambridge University have discovered that men with dementia live longer than women with the condition, but frailty is a definite indicator of an early death in patients with dementia.
The best summary accurately captures the Cambridge study's purpose (informing dementia care), methodology (13,000 seniors tracked 14 years), and key finding (average 4+ year survival post-onset).
A) Marital status, age, and gender seem not to be issues in the longevity of patients who suffer from dementia. Out of 438 people with dementia, the vast majority were dead within a few years.
Factual errors: gender was influential (women lived longer); age's role isn't dismissed (frailty at onset mattered); and "vast majority dead" misrepresents, 438 developed dementia during study, most died during the 14-year tracking period, not necessarily "within a few years" of onset.
B) In hopes of discovering information that can assist with care for dementia patients, Cambridge researchers studied 13,000 seniors. They found that dementia sufferers lived on average slightly longer than four years.
Accurately synthesizes: research purpose ("help patients, clinicians, care providers"), methodology (13,000 seniors, 14 years), and central finding (women 4.6 years, men 4.1 years post-onset, averaging "slightly longer than four years") without overstatement or omission.
C) Alzheimer's is just one form of dementia, a medical condition that affects millions and whose prevalence is expected to increase greatly over the next few decades.
Too narrow, describes only introductory context about dementia prevalence without addressing the study's purpose, methodology, or findings that constitute the passage's primary content.
D) Researchers at Cambridge University have discovered that men with dementia live longer than women with the condition, but frailty is a definite indicator of an early death in patients with dementia.
Factual error: women lived longer (4.6 vs. 4.1 years), not men, directly contradicting the passage's explicit gender finding.
Conclusion
Effective summaries must balance accuracy with conciseness, capturing research purpose, methodology, and key findings without factual errors or narrow focus. Option B achieves this balance while other options introduce significant misrepresentations of gender findings, survival timelines, or study scope.