1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bazaltina [42]
3 years ago
13

You are interested in finding out whether middle-aged men who have premature heartbeats are at greater risk of developing a myoc

ardial infarction (heart attack) than men whose heartbeats are regular. Electrocardiogram (ECG) examinations are performed on all male office employees 35 years of age or older who work for oil companies in Houston. The ECG tracings are classified as irregular or regular. Five years later, myocardial infarction rates are compared between those with and those without baseline ECG irregularities. What kind of study is this?
a. Cross-sectional study
b. Case-control study
c. Prospective cohort study
d. Retrospective cohort study
e. Clinical trial
f. Community trial
Mathematics
1 answer:
Anastasy [175]3 years ago
6 0

Answer:

The answer is "Option C".

Step-by-step explanation:

This study looks after results including such illness growth during the trial time, and this includes additional elements such as suspected risk or source of protection (s). The study usually consists of taking and looking at such a cohort of subjects for a long time. The main advantage of these studies is knowledge accumulation and higher efficiency. Systematic reviews may suffer from choice distortion, in addition to the potential indication misinterpretation.

You might be interested in
`What is the maximum number of squares that could be formed using four of the dots in the unit grid as vertices. 5x5 grid
Dmitry_Shevchenko [17]

Answer:

my answer would be 25

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Over the course of 87 days, about 200 million gallons of crude oil spilled into the Gulf of Mexico. If the oil spilled at a cons
katrin [286]

Answer:

3.19 gallons of oil lost per day

Step-by-step explanation:

7 0
3 years ago
Needs to be in fraction form and simplified <br><br> 3 4/5 + 4 5/6 =? <br><br> 10 points
LenaWriter [7]

Answer:

259/30 or 8 19/30 depending on what format your teacher wants the answer

Step-by-step explanation:

First we can turn both mixed fractions into improper fractions and to do that we multiply the whole number by the denominator and that add that to the top number.  So for 3 4/5 we would multiply 3 and 5 and than add 4 getting us to 19/5 doing the same to 4 5/6 gets us to 29/6.  Now in order to add fractions we need to get a common denominator.  The least common multiple of 5 and 6 is 30 so we will multiply each fraction by whatever number will give us 30 in the denomiator.  for 19/5 that number is 6 so our new fraction is 114/30 and for 29/6 that number is 5 so our new number is 145/30.  Now we just add the numerators and simplify.  114/30+145/30=259/30

I hope this helps and please don't hesitate to ask if there is anything still unclear!

6 0
3 years ago
I need help with this question
Tamiku [17]
23,26,29,32,35,38,41,44
4 0
3 years ago
What’s the answer to 3x/x+5+7/x+5
uranmaximum [27]
Ambiguous expression.  I think you meant:
                                 3x + 7
<span>3x/(x+5)+7/(x+5) = --------------
                                  x+5

There's no "answer."  All you can do here is to combine the terms and simpify the resulting sum.

</span>
7 0
3 years ago
Other questions:
  • In a​ poll, 37​% of the people polled answered yes to the question​ "Are you in favor of the death penalty for a person convicte
    8·1 answer
  • Jim had 5/7 of a pound of candy. she ate 1 3/4 of that candy. how many pounds of candy did he eat?
    15·1 answer
  • Write (-9.4,8.9) (-5.4,28.9) in slope intercept form
    14·1 answer
  • The purpose of a confidence interval is to provide __________________.
    7·1 answer
  • Use breaking apart to find each product 6 times 6
    11·1 answer
  • (URGENT) Can someone please help me with this? Thank you! :)
    6·1 answer
  • Use the following to write and solve a proportion to find the values of X, Y and Z. ​
    7·1 answer
  • Name
    13·2 answers
  • Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of tim
    13·1 answer
  • If you add 15 calls and multiple them by the total of 67 keeps and there is only one 1 Jeep subtract that by 56 and add 100 divi
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!