I am definitely not an expert in statistics, so I was wondering if someone could assist me in selecting the appropriate (and simplest) statistical test.

My research focuses on examining the impact/relationship between weight and shape concerns (ratio variable) on excessive exercise (ratio variable) while considering two moderators: anxiety (nominal, dichotomous) and gender (nominal, dichotomous).

Which analyses would you recommend? Additionally, would you include both moderators in the same model or would you conduct separate analyses?

Thank you in advance for your help.

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