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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.

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siniylev [52]
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Here's why:
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8 0
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Answer:

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The short plants are recessive alleles because they did no show up in any of the plants.  Ex: tt

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(0,2)

Step-by-step explanation:

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7 0
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the length of a rectangle is 3 more than the width. if the area is 40 square inches, what are the dimensions.
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5 0
3 years ago
Does anybody know this ???
Anna11 [10]

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