How will you age? World-leading Dunedin Study launches next phase
The world-leading Dunedin Study is set to launch its age 52 assessments, delving into an understudied but important period of life and time of change.
20 hours ago
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The world-leading Dunedin Study is set to launch its age 52 assessments, delving into an understudied but important period of life and time of change.
20 hours ago
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2
Using electroencephalogram (EEG) data collected before the age of 1, it is possible to predict which babies will have the highest adaptive behavior scores at the age of 4.
Mar 25, 2024
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The scientist of the Faculty of Medicine of the University of Malaga José Luis Royo has coordinated a study that summarizes eight years of research and brings together 100 multidisciplinary specialists, identifying a mutation ...
Mar 15, 2024
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Alcohol use disorder (AUD) is associated with suicide mortality, with a similar association seen across the sexes, according to a review and meta-analysis published online March 12 in JAMA Network Open.
Mar 13, 2024
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A new research paper titled "Exploring the effects of dasatinib, quercetin, and fisetin on DNA methylation clocks: a longitudinal study on senolytic interventions" has been published in Aging.
Mar 6, 2024
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An inexpensive measure of obesity in children and adolescents that could replace body mass index (BMI) has been identified in a new study as waist circumference-to-height ratio. This measure detected excess fat mass and distinguished ...
Mar 5, 2024
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A recent Mayo Clinic study published in Alzheimer's & Dementia investigated lucid episodes in people living with later stages of dementia, providing insights into how these occurrences reveal themselves.
Mar 5, 2024
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Researchers have developed a new catheter-based device that combines two powerful optical techniques to image the dangerous plaques that can build up inside the arteries that supply blood to the heart. By providing new details ...
Mar 5, 2024
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Patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection have an increased risk for incident autoimmune inflammatory rheumatic disease (AIRD) compared with matched patients with influenza infection ...
Mar 5, 2024
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An inexpensive, cavity-fighting liquid called silver diamine fluoride (SDF) works as well as dental sealants to keep tooth decay at bay in a school cavity prevention and treatment program, according to a new study by researchers ...
Mar 4, 2024
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A longitudinal study is a correlational research study that involves repeated observations of the same items over long periods of time — often many decades. It is a type of observational study. Longitudinal studies are often used in psychology to study developmental trends across the life span, and in sociology to study life events throughout lifetimes or generations. The reason for this is that unlike cross-sectional studies, longitudinal studies track the same people, and therefore the differences observed in those people are less likely to be the result of cultural differences across generations. Because of this benefit, longitudinal studies make observing changes more accurate and they are applied in various other fields. In medicine, the design is used to uncover predictors of certain diseases. In advertising, the Communicus System, the design is used to identify the changes that advertising has produced in the attitudes and behaviors of those within the target audience who have seen the advertising campaign.
Because longitudinal studies are observational, in the sense that they observe the state of the world without manipulating it, it has been argued that they may have less power to detect causal relationships than do experiments. But because of the repeated observation at the individual level, they have more power than cross-sectional observational studies, by virtue of being able to exclude time-invariant unobserved individual differences, and by virtue of observing the temporal order of events.
Longitudinal studies allow social scientists to distinguish short from long-term phenomena, such as poverty. If the poverty rate is 10% at a point in time, this may mean that 10% of the population are always poor, or that the whole population experiences poverty for 10% of the time. It is not possible to conclude which of these possibilities is the case using one-off cross-sectional studies.
Types of longitudinal studies include cohort studies and panel studies. Cohort studies sample a cohort, defined as a group experiencing some event (typically birth) in a selected time period, and studying them at intervals through time. Panel studies sample a cross-section, and survey it at (usually regular) intervals.
A retrospective study is a longitudinal study that looks back in time. For instance a researcher may look up the medical records of previous years to look for a trend.
This text uses material from Wikipedia, licensed under CC BY-SA