Related Experiment Video
Updated: Jan 17, 2026
06:48
Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
Published on: July 29, 2020
5.0K
Predictors and Factors Associated with Insomnia in a Brazilian Sample: A Cross-Sectional Study
Isabela Mayumi Nishino Aizawa1, Felipe Alckmin-Carvalho2, Helder Sergio Lira Soares Filho1
1Department of Psychiatry, Universidade de São Paulo, São Paulo, SP, Brazil.
Sleep Science (Sao Paulo, Brazil)
|September 18, 2025
Summary
Male sex, lower education, older age, and higher anxiety/depression levels are linked to increased insomnia risk in Brazil. These findings highlight key biopsychosocial factors for potential prevention and treatment strategies.
Area of Science:
- Psychiatry
- Sleep Medicine
- Epidemiology
Background:
- Chronic insomnia presents significant functional and mental health challenges.
- Understanding associated factors is crucial for effective management.
Purpose of the Study:
- To investigate biopsychosocial variables linked to insomnia in a Brazilian adult population.
- To identify predictors for insomnia in a clinical sample.
Main Methods:
- Cross-sectional study with 1,435 adults in São Paulo, Brazil.
- Insomnia diagnosis based on DSM-5 and Insomnia Severity Index.
- Assessed anxiety and depression using the Hospital Anxiety and Depression Scale (HADS).
- Multivariable binary logistic regression analysis.
Main Results:
- Male sex (OR=1.93) and lacking a university degree (OR=1.89) increased insomnia odds.
- Each year of age (OR=1.05), depression score (OR=1.18), and anxiety score (OR=1.40) were associated with higher insomnia likelihood.
Conclusions:
- Biopsychosocial factors are significantly associated with insomnia in this Brazilian sample.
- Findings support the development of targeted preventive and treatment interventions.
- Further research can refine understanding of insomnia's complex etiology.
Related Concept Videos
01:27Insomnia
410
Insomnia is a prevalent sleep disorder characterized by difficulty falling asleep, frequent awakenings during the night, and waking up too early without being able to return to sleep. People with insomnia often experience these disruptions at least three nights a week for at least one month. Chronic insomnia, which lasts for at least three months, can lead to increased anxiety, which in turn can worsen sleep difficulties, creating a cycle of sleeplessness and stress.
Multiple factors contribute...
Multiple factors contribute...
410
01:19Management of Insomnia
542
The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
542
01:13Insufficient Sleep and Sleep Deprivation
839
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
839
01:24Substance Use Disorders Affecting Sleep
403
Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
Understanding the concepts of physical dependence,...
403
01:18Factors Affecting Illness
5.1K
When a person's physical, emotional, intellectual, social development or spiritual functioning is compromised, this deviation from a healthy normal state is called illness. Illness creates stress that in turn harms individuals. Irritation, anger, denial, hopelessness, and fear are behavioral and emotional changes an individual experiences in the phases of illness. A variety of factors influence a person's health and well-being.
For instance, risk factors are connected to illness,...
For instance, risk factors are connected to illness,...
5.1K
01:53Cause and Effect
12.1K
While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?
12.1K