In a hypothetical study, the investigator wants to look at the association between exposure to pesticides in the workplace and the development of asthma. The investigator selects a large group of individuals who work on PLTW farms across the country and follow them over ten years to determine who develops asthma. Of the 318 individuals exposed to pesticides, 69 develop asthma. 990 individuals worked in areas that were free of exposure to pesticides. 903 are asthma-free after ten years.

Required:
Is the hypothetical study a prospective or retrospective cohort study? Explain your answer.

Answers

Answer 1

Answer:

Prospective cohort study

Explanation:

Prospective cohort study is a type of observational study in epidemiology, where the subjects of the study are followed and monitored by the researcher over time, so as to investigate their risk or susceptibility to the disease. This is unlike the retrospective study where the researcher refers back in time to archived data.

The experiment described above is a prospective cohort study because the researcher follows the participants (the workers) over a span of time (ten years). At the end, he tried to evaluate the association between the exposure to the pesticide and the disease.


Related Questions

Recall a time when someone helped you to see something in a different way.

Answers

After seeing a lot of children from different countries not have a lot of food to eat, water to drink, and even have a home with no insulation, it made me feel more grateful and appreciate even the small things I have in my life and to not take things for granted.

Mrs. L is a 63-year-old woman who reports constant back pain. Further inquiry into her medical history revealed that over the past 3 years, she has suffered fractures of her femur and wrist after minor falls. She experienced menopause at age 49. Mrs. L has a secretarial job, drives to work, and she “does not have time for exercise.” She reports that she consumes 8 to 10 cups of coffee a day and has been a smoker most of her adult life. She has not seen her physician recently nor had a recommended bone density test because of the time and cost involved.

Answers

it is c or b i can’t remember

Help ASAP please ! 100 points !!!
1. What are the principles of training?
2. What is Isometric exercises?
3. What is Isotonic exercises?
4. What is Isokinetic exercises?
5. Name three SAFETY PRECAUTIONS for lifting weights

Answers

Answer:

1. Principles of training are:

Individuality- Everyone is different and responds differently to exercise.Specificity- You enhance your own ability on a specific sport ot exercise (like for example playing soccer a lot makes you a good soccer player)Progression- start from the very first step and go from thereOverload- to add a bit extra from your routine exercise in order to build stamina or endurance.Adaptation- Over time, your body will become accustomed with the regimen given.Recovery- Always have a rest time for your body to recover Reversibility- Your body can lose the muscle you get if you stop exercising.

2. isometric exercise: a form of exercise involving the static contraction of a muscle without any visible movement in the angle of the joint.

3.Isotonic exercise: a form of exercise when the muscle maintains equal tone while shortening.

4.Isokinetic exercise : movement at a constant speed regardless of the force applied. Isokinetic exercise allows muscles to gain strength consistently all through the range of movement.

5.

Always follow the gym's safety rulesWear shoes with good tractionKeep your back straight when lifting

what is the role of transport in economic development​

Answers

Answer:

Because of its intensive use of infrastructures, the transport sector is an important component of the economy and a common tool used for development. ... At the aggregate level, efficient transportation reduces costs in many economic sectors, while inefficient transportation increases these costs

Explanation:

hope it helps

Answer:

In general, transport projects that improve overall accessibility (i.e., they improve businesses ability to provide goods and services, and people's ability to access education, employment and services) and reduce transportation costs (including travel time, vehicle operating costs, road and parking facility costs

Explanation:

Give brainliest please!

PLSSS HELP!!!
WILL GIVE BRAINLIEST!!!

Do you ever feel hurt by the way your parents treat you? Do you think they every feel hurt by the way you treat them? Can you give an example of each?

Answers

Answer:

Yes, sometimes they hurt me, Sometimes they say that I am disappointing them and that is one of the things that hurts me the most because it makes me feel less.But on the other hand I think that sometimes I have done the same without wanting to.

When, for example, I tell them that they don't understand me.

Explanation:

need help asap

The depolarizing phase of a neuronal action potential is caused by ___

Answers

Answer:

The inward flow of sodium ions increases the concentration of positively charged cations in the cell and causes depolarization, where the potential of the cell is higher than the cell's resting potential. The sodium channels close at the peak of the action potential, while potassium continues to leave the cell.

Sam has just learned that he is at risk for a stroke. What have the doctors found?
* a high level of white blood cells
*a lack of oxygen in his red blood cells
*an abnormal blood clot in a blood vessel
*an overabundance of T-cells and B-cells

Answers

An abnormal blood clot in a blood vessel. Strokes are caused by blood clots.

On a Punnett square, what do the letters at the top and left side represent?


The letters at the top represent alleles of the parents. The letters on the left represent alleles of the offspring.

The letters at the top represent alleles of the male offspring. The letters on the left represent alleles of the female offspring.

The letters at the top represent alleles of one parent. The letters on the left represent alleles of the other parent.

The letters at the top represent alleles of the female offspring. The letters on the left represent alleles of the female parent.

Answers

Answer:

The answer is C. The letters at the top represent alleles of one parent. The letters on the left represent alleles of the other parent.

Explanation:

i know just trust!!! hope this helped :)

In a case where electrical current leakage from the circuit occurs, the GFCI would
do the following:

_ Cut off the electricity
_ Trip the circuit
_ Sense the current leakage

(Place the options in the correct order)

Answers

Sense the current leakage
Trip the circuit
Cut off electricity

when you change the number of electron on an atom,you produce a different​

Answers

Answer:

element.

you're welcome

what benefits can you get in playing volleyball?​

Answers

Answer:

The activities required when playing volleyball strengthen the upper body, arms, shoulders, thighs, abdominals, and lower legs. In addition, volleyball improves hand-eye coordination, reflexes, and balance. Last but not least, volleyball teaches teamwork and communication and is a great social activity

which of the following are the factors of 1 - x square​

Answers

Answer:

(1+x)(1-x)

Explanation:

Since both terms are perfect squares, factor using the difference of square formula

a^2 - b^2 = (a+b)(a-b) where a = 1 and b = x.

what injuries can a person have from being confused?​

Answers

Answer:Noticing confusion when it first appears will help you or your loved one get ... Confusion can have many causes, including injury, infection, substance use, and ... People experiencing confusion can sometimes act aggressively or unpredictably.

Explanation:

I think there are many, it could be mentally and physically because we hen people are confused it could mess with them mentally not knowing what to do next or how to, and physically could mess with their school work and their actions.
P.s if you feel confused ask Jesus to help you just pray to him.❤️

which activities are healthy ways to reduce stress?​

Answers

Answer:

There are several methods, and it varies out from person to person: exercise is one of them which releases good-feeling hormones (endorphins). There is also meditation, deep breathing exercises,  any kind fo therapy that involves the 5 senses like musical therapy, aromatherapy (scented candles), imagery (happy stuff or relaxing stuff like imagining a waterfall) , or even biofeedback.

Which of the following BEST describes a body in equilibrium?
A.
It is standing upright.
B.
All forces acting on a body are balanced.
C.
The force of gravity has been overcome.
D.
No forces are acting on the body.
Your thumb contains the only saddle joint in the entire body. How would your hand function differently if your thumb contained a pivot joint? What if it contained a ball and socket joint? Describe four consequences of having a different type of joint in the thumb.
Your thumb contains the only saddle joint in the entire body. How would your hand function differently if your thumb contained a pivot joint? What if it contained a ball and socket joint? Describe four consequences of having a different type of joint in the thumb.

Answers

c


i just took the test

Answer:

Its B

Explanation:

Just got done with the test

PLEASE HELP!!!!!



What message would you like teenagers to know about how cannabis is dangerous?

Answers

Answer:

because you could get super addicted to the point where you have to have it or your body shuts down and messes you up. It could also kill you

Select the correct answer.
Tom finds out that his coworker is sharing confidential information with a competitor. What should Tom do to handle the situation?
A.
discuss it with his other colleagues so that more people are aware of it
B.
report it to the supervisor
C.
ignore it because it is beyond his scope of work
D.
work out an arrangement that will benefit him monetarily

Answers


B he should report it

What is combing form for itch/o

Answers

I’m sorry but what do you mean?

HELP
Which is an example of a highly processed food?

Flamin' hot Cheetoes

frozen broccoli

banana

none of the above

Answers

Flaming hot Cheetos are an example of a highly processed food.

. What are the four fitness zones

Answers

Answer:

aerobic fitness, muscular fitness, fexibility, and stability and balance  

Explanation:

Answer:

The four fitness zones are

Explanation:

aerobic fitness. muscular strength and endurance, flexibility, and body composition.

Which type of health is demonstrated when a person makes healthy food choices?

Answers

Answer:

a positive lifestyle

Explanation:

Describe if and how you see eating disorders, the culture influencing eating disorders, how the healthcare system works, etc

Answers

Answer:

I see eating disorders as serious, and they ARE mental disorders. People assume that all eating disorders are based around weight loss. They're not. With stereotypes given by society today of what each sex has to look like people are going to EXTREME lengths so they can be socially excepted, but not all eating disorders are caused by society, sometimes it's caused by situational reasons, or someone's anxiety.

I have an eating disorder called ARFID (Avoidant/Restrictive Food Intake Disorder) which was caused by situational trauma. None of which was my fault. I had eating problems as a kid and then I didn't know eating disorders existed.

I actually firmly believe I don't weigh enough. But my diet isn't healthy neither is my lifestyle. And while I can admit that changing that is SOO hard. I've tried dozens of times to forfeit sugar, it lasted maybe a week.

I'm 17 years old, five foot three, and I've never hit 100 pounds in my life. I stopped growing at 15 because of ARFID. Eating disorders are serious, very serious, one thing people forget whenever they talk about how it's a choice and people suffering with an eating disorder are doing it for attention, is eating disorders kill people.

People with anorexia or bulimia don't want to die they want to be skinnier.

Because of mine I went 3 days without drinking water, and eating anything healthy. I got a UTI and sick from that. I didn't want that, I just couldn't stomach anything at that time besides chips and sweet tea, anything else made me sick.

How many days will it take to run around the earth using your own two legs?

Answers

Answer:

just dont do it

Explanation:

Men also struggle with eating disorders, but why do you think anorexia and bulimia overwhelmingly affect young females more than young males?

Answers

Answer:

because of societal standards

Explanation:

1. Which of the following determines how many meals a client should eat per day?

Answers

It could be physical activity

What is the body's process of creating a barrier to stop bleeding called?
*erythropoiesis
*coagulation
*macrophage
*thrombus

Answers

Coagulation. That is when blood reacts with oxygen and gets thicker to stop bleeding

Tanya wants to play soccer. Her friend Keith doesn't want to play soccer, but He wants to stay fit. how might Tonjes and Keith values affect their fitness goals

Answers

They might not be able to come up with a solution leaving them with not doing anything active
It affects their fitness goals because they are not active!

how does race affect health?

Answers

Answer:

Epidemiological data indicate that racial groups are unequally affected by diseases, in terms or morbidity and mortality. Some individuals in certain racial groups receive less care, have less access to resources, and live shorter lives in general.

Explanation:

Everything with molecules has energy, but molecules in cold things move __________________________ than the molecules in warm things.
A faster

B slower

C the same

Answers

Answer:

Answer:

B - Slower

Explanation:

B - Slower

Slower

Explanation.
When they become cold they tend to slow down, when they become warmer they start to move faster and fast.

Roles and responsibilities

Adult: Teenagers:​

Answers

Adult: take care of family, get a job, make some money...
Teenager: do chores, do well in school...

Answer:

teenagers i don't know to do good in school and all dat adult make sure your kid grows up to be great and pay the bills and check your kids make sure they don't have depression and emotional problems

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