# Recent content by HGHG

1. ### Statistical tests - help please!

So, the subjects may not complete the treatment/placebo intervention and so, they will be instructed to take rescue medication. In this case, I should take into account what you have suggested? Thank you,
2. ### Statistical tests - help please!

Thank you for your response - this is very helpful. Would it be best to suggest linear regression modeling and then further details/choice of tests can be made once the data is available? Thank you very much.
3. ### Statistical tests - help please!

Hi all, I am writing a project plan and I am struggling with the statistical analysis plan as I am in the early stages of learning. I was hoping someone could guide me with what stats tests I could conduct with the following primary endpoint - thank you. Alternative hypothesis: treatment is...
4. ### Stats help - please!

Dear Karabiner, In the case of my question, do you then advise using a two-tailed test? Thank you for help!
5. ### Stats help - please!

Great. Through some learning of mine, I have seen that one tail may be questionable for some research, is this correct? I am yet to work out the sample size, I was hoping to do this once I know what tests and tail to go ahead with. Yes, the time distribution is normal. Thanks again,
6. ### Stats help - please!

That's correct, I expect treatment to render a reduced time to onset of pain relief compared to placebo. Thank you.
7. ### Sample size calculation

Thanks for your comment, I have luckily found a way to this.
8. ### Stats help - please!

Hi all, I am writing a project proposal: randomized, placebo-controlled crossover trial, I will be investigating treatment vs air. Participants will be asked to inhale the treatment or high-flow air (placebo). In this case, would a one-tailed test or a two-tailed test be more appropriate...
9. ### Sample size calculation

There is a lack of literature to go by. So perhaps I could use effect size to calculate the sample size?
10. ### Sample size calculation

Dear all, I am going to be carrying out a study, however, there is insufficient data to inform us of some information to calculate the sample size. Would be best to use effect size to calculate the sample size then? Thank you in advance,