Related Experiment Video
Updated: Feb 2, 2026

14:43
A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
Published on: January 12, 2018
13.5K
Low birth weight and its associated factors.
Andreia Ielpo Magalhães Moreira1, Paulo Roberto Moreira de Sousa1, Flavio Sarno2
1Instituto Israelita de Responsabilidade Social, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
Einstein (Sao Paulo, Brazil)
|November 15, 2018
Summary
The study found that 7.6% of newborns had low birth weight. Factors like multiple births, maternal age, and cesarean delivery were linked to low birth weight.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Health
- Public Health
Background:
- Low birth weight (LBW) is a significant global health concern, associated with increased neonatal morbidity and mortality.
- Identifying risk factors for LBW is crucial for developing targeted interventions.
- Previous studies have explored various maternal and neonatal factors, but regional variations and specific population characteristics require further investigation.
Purpose of the Study:
- To determine the incidence of low birth weight (LBW) in a specific urban community.
- To identify and analyze the key factors associated with the occurrence of LBW.
Main Methods:
- A retrospective cohort study was conducted using data from 794 pregnant women and their newborns.
- Data collected included maternal demographics, pregnancy details, and newborn characteristics.
- Statistical analyses, including chi-squared tests, Mann-Whitney tests, and logistic regression, were employed to assess associations with LBW (<2.5kg).
Main Results:
- The overall incidence of low birth weight was 7.6%.
- Multivariate analysis revealed significant associations between LBW and the presence of twinning, maternal age (protective effect observed for ages 18-34 years), and cesarean section delivery.
- The median maternal age was 24 years, with 74.7% reporting cohabitation and 53.4% having 9-11 years of schooling.
Conclusions:
- The study confirms a 7.6% prevalence of low birth weight in the studied population.
- Twinning, maternal age, and cesarean delivery emerged as significant factors associated with low birth weight.
- These findings underscore the importance of considering these factors in prenatal care and risk assessment for LBW.
Related Concept Videos
Birth Control Methods
6.8K
Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although...
6.8K
Weighted Mean
6.3K
While taking the arithmetic, geometric, or harmonic mean of a sample data set, equal importance is assigned to all the data points. However, all the values may not always be equally important in some data sets. An intrinsic bias might make it more important to give more weightage to specific values over others.
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
For example, consider the number of goals scored in the matches of a tournament. While computing the average number of goals scored in the tournament, it may be more important to...
6.3K
Atomic Weight
13.0K
Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams. Scientists arbitrarily define this amount of mass as one atomic mass unit (amu) or one Dalton. Electrons are much smaller in mass than protons, weighing only 9.11 × 10-28 grams, or about 1/1800 of an atomic mass unit. As a result, they do not contribute much to an element's overall atomic mass. This means that, when considering atomic mass, it is customary to ignore the mass of any electrons and...
13.0K
Mass and Weight
15.3K
Mass and weight are often used interchangeably in everyday conversation. For example, medical records often show our weight in kilograms, but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of the Earth on an object. It depends on the distance from the center of the Earth. Weight dramatically varies if we leave the Earth's surface, unlike mass, which does not vary with location. On the Moon, for example, the...
15.3K
Apparent Weight
9.8K
True weight is the measure of the gravitational force acting on an object. However, if the object accelerates, its measured weight is different from its true weight. Similar observations can be made when the object is submerged in water. An object's weight in water is its apparent weight, which is equal to the difference between its true weight and the buoyant forces.
Consider a person standing on a bathroom scale inside an elevator. If the scale is accurate at rest, its reading equals the...
Consider a person standing on a bathroom scale inside an elevator. If the scale is accurate at rest, its reading equals the...
9.8K
Transcription Factors
82.7K
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
82.7K

