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?
![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
Any ALAN
Exposure
Totals
Analysis:
Use your completed table to answer the questions below: (round answers to 3 decimal place)
1. What proportion of cases in the study had BMI totals less than 30?
=
2. What proportion of cases in the study reported sleeping with any ALAN exposure?
3. What proportion of those reporting any ALAN exposure had a BMI ≥ 30 [call it ôA ]?
PA =
[This proportion can also be called the risk of being obese for those with any ALAN exposure.]
4. What proportion of those reporting no ALAN exposure had a BMI ≥ 30 [call it ÔN]?
ÎN
[This proportion can also be called the risk of being obese for those with no ALAN exposure.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fad12570c-ddef-4c8b-b16f-976fa6c385a2%2Fec0acadf-4728-4bde-bec7-8daf3ee6635d%2Fbxzypyn_processed.png&w=3840&q=75)
Transcribed Image Text: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
Any ALAN
Exposure
Totals
Analysis:
Use your completed table to answer the questions below: (round answers to 3 decimal place)
1. What proportion of cases in the study had BMI totals less than 30?
=
2. What proportion of cases in the study reported sleeping with any ALAN exposure?
3. What proportion of those reporting any ALAN exposure had a BMI ≥ 30 [call it ôA ]?
PA =
[This proportion can also be called the risk of being obese for those with any ALAN exposure.]
4. What proportion of those reporting no ALAN exposure had a BMI ≥ 30 [call it ÔN]?
ÎN
[This proportion can also be called the risk of being obese for those with no ALAN exposure.]
Expert Solution
Step 1: Write the given information
Given the result of the study, of the 7,807 participants who said they slept with no artificial light at night (ALAN), 1,983 were also reported as obese (BMI ≥ 30). In total, there were 12,543 reported obese participants in the study.
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