let us refresh some basic school science.

an independent variable is a thing that we think to cause something,

while a dependent variable is that something.

for example, if we worry that eating chicken can cause lung cancer:

independent variable : eating chicken

dependent variable : lung cancer.

if we are exploring multiple factors, we can simply replace independent with the word "risk factors" or "determinants".

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Discussion

Now that you have learnt about All these, pet us practice together.

let say your momma told you that her grandma used to consume Hibiscus Rosa Sinensis when she suffered pains, like dysmenorrhea.

so what are the independent and dependent variables?

yes, they are:

independent variable : consume Hibiscus Rosa Sinensis

dependent variable : reduces pain

now head to consensus.app website and type :

Does Hibiscus Rosa Sinensis reduces pain?

you will get relevant answers based on different researches along with their explanation. you may need to use either a 10 years or 5 years filter so you dont get really outdated studies

if you click on the researches you will get more information such as the study design. this is where you can use your knowledge about hierarchy of study design evidence, especially if you find different studies with conflicting results.

i hope my post is beneficial to you. thank you!