Summary: This study aimed to determine whether exposure to Artificial Light At Night (ALAN) while sleeping is associated with the prevalence and risk of obesity, as previous research has shown a link between short sleep and obesity. The study involved analyzing data from 43,722 women aged 35 to 74 years in the US who had no history of cancer or cardiovascular disease and were not shift workers, daytime sleepers, or pregnant. The women reported their ALAN exposure at enrollment, and the data were analyzed from 2017 to 2018. ALAN exposure was categorized as 'No ALAN Exposure', and 'Any ALAN Exposure' (small nightlight, light outside the room, and light or television in the room). The presence of obesity was determined based on the measurement of general obesity, defined as having a body mass index (BMI) (calculated as weight in kilograms divided by height in meters squared) of 30.0 or higher. Research Question: Is artificial light at night while sleeping associated with obesity? Results: Of the 7,807 participants who said they slept with no artificial light at night (ALAN), 1,983 also reported as obese (BMI ≥ 30). In total there were 12,543 reported obese participants in the study. Understanding the research: 1. What type of study was this based on the summary?
Summary: This study aimed to determine whether exposure to Artificial Light At Night (ALAN) while sleeping is associated with the prevalence and risk of obesity, as previous research has shown a link between short sleep and obesity. The study involved analyzing data from 43,722 women aged 35 to 74 years in the US who had no history of cancer or cardiovascular disease and were not shift workers, daytime sleepers, or pregnant. The women reported their ALAN exposure at enrollment, and the data were analyzed from 2017 to 2018. ALAN exposure was categorized as 'No ALAN Exposure', and 'Any ALAN Exposure' (small nightlight, light outside the room, and light or television in the room). The presence of obesity was determined based on the measurement of general obesity, defined as having a body mass index (BMI) (calculated as weight in kilograms divided by height in meters squared) of 30.0 or higher. Research Question: Is artificial light at night while sleeping associated with obesity? Results: Of the 7,807 participants who said they slept with no artificial light at night (ALAN), 1,983 also reported as obese (BMI ≥ 30). In total there were 12,543 reported obese participants in the study. Understanding the research: 1. What type of study was this based on the summary?
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Transcribed Image Text:Summary:
This study aimed to determine whether exposure to Artificial Light At Night (ALAN) while sleeping is
associated with the prevalence and risk of obesity, as previous research has shown a link between
short sleep and obesity. The study involved analyzing data from 43,722 women aged 35 to 74 years in
the US who had no history of cancer or cardiovascular disease and were not shift workers, daytime
sleepers, or pregnant. The women reported their ALAN exposure at enrollment, and the data were
analyzed from 2017 to 2018. ALAN exposure was categorized as 'No ALAN Exposure', and 'Any ALAN
Exposure' (small nightlight, light outside the room, and light or television in the room).
The presence of obesity was determined based on the measurement of general obesity, defined as
having a body mass index (BMI) (calculated as weight in kilograms divided by height in meters
squared) of 30.0 or higher.
Research Question: Is artificial light at night while sleeping associated with obesity?
Results: Of the 7,807 participants who said they slept with no artificial light at night (ALAN), 1,983 also
reported as obese (BMI ≥ 30). In total there were 12,543 reported obese participants in the study.
Understanding the research:
1. What type of study was this based on the summary?
01/27/20
2. What type of and how many variables are in the research question?
Exploratory Data Analysis:
Use the results above to complete the table below:
BMI ≥ 30
BMI < 30
Totals
No ALAN
Exposure
Ⓒ - Pennsylvania State University
Any ALAN
Exposure
Totals
Analysis:
Use your completed table to answer the questions below: (round answers to 3 decimal place)
![[This proportion can also be called the risk of being obese for those with no ALAN exposure.]
5. If A denotes the proportion of those that are obese with 'any ALAN exposure' and pN to denote
the proportion who are obese with 'no ALAN exposure,' calculate the difference in proportion for
being obese, PA ÎN between those were exposed who sleep with any ALAN exposure
compared to those with none.
6. Find the relative risk of being obese when comparing the 'any ALAN exposure' to the 'no ALAN
exposure' group.
Interpret this relative risk:
7. For the group with no ALAN exposure, what are the odds of having a BMI < 30?
8. Based on the result of this study, can we say that any exposure to a light at night while sleeping
can cause obesity?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fad12570c-ddef-4c8b-b16f-976fa6c385a2%2F31075e92-7ea3-46f5-a8de-df8275d2b0a2%2F2p4c3qi_processed.png&w=3840&q=75)
Transcribed Image Text:[This proportion can also be called the risk of being obese for those with no ALAN exposure.]
5. If A denotes the proportion of those that are obese with 'any ALAN exposure' and pN to denote
the proportion who are obese with 'no ALAN exposure,' calculate the difference in proportion for
being obese, PA ÎN between those were exposed who sleep with any ALAN exposure
compared to those with none.
6. Find the relative risk of being obese when comparing the 'any ALAN exposure' to the 'no ALAN
exposure' group.
Interpret this relative risk:
7. For the group with no ALAN exposure, what are the odds of having a BMI < 30?
8. Based on the result of this study, can we say that any exposure to a light at night while sleeping
can cause obesity?
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