Mathematics, 17.07.2021 03:50, asshattt
You are interested in finding out whether middle-aged men who have premature heartbeats are at greater risk of developing a myocardial 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
Answers: 3
Mathematics, 21.06.2019 19:30, iloading5117
Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts
Answers: 2
Mathematics, 21.06.2019 20:00, jhernandezvaldez142
Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?
Answers: 2
Mathematics, 21.06.2019 21:00, ballbritez
Which line is parallel to the line that passes through the points (2, –5) and (–4, 1) a. y=-x+5 b. y=-2/3x+3 c. y=2/3x-2 d. y=x+5
Answers: 2
You are interested in finding out whether middle-aged men who have premature heartbeats are at great...
Mathematics, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01
Physics, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01
English, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01
Mathematics, 18.09.2020 15:01