# Search results

1. ### Statistical test

I don't understand how the test was performed, this was available in literature and so I was referring to the same.
2. ### Assistance for study hypothesis and stat analysis

I require assistance for a study hypothesis and statistical analysis plan for the below. (1) Research question : To find time to stop bleeding with use of product. (2) Data Collection : Time take to stop bleeding will be captured with use of a stop watch. Eg. Patient 1= 5 minutes; Patient 2 =...
3. ### Statistical test

Thanks for your inputs. If t test is similar to Confidence Interval, I will just go ahead with confidence interval. Also is it possible to find confidence interval for below outcome. Patient comfort levels as assessed by verbal inquiry: Excellent - 59 patients Good - 11 patients Fair - 0...
4. ### Effect Size

Noted with thanks. I require assistance with another study as well. Please let me know if you can help. I will write in another post.
5. ### Effect Size

The hypothesis is time to stop bleeding is greater than 10 minutes. Is there a way to find the effect size ?
6. ### Statistical test

Thanks for your valuable inputs. How do I perform a t test and get a p value to reject the null hypothesis. I was referring to that attached reference. Attached reference has ambulation time. and has a p value of <0.0001 to reject the null hypothesis. In my case I am trying to check similar...
7. ### Effect Size

Research Question: How much time does it take to stop bleeding (Haemostasis) after transracial catheterisation. Study product: Chitosan dressing used to stop bleeding from puncture site Method : Chitosan dressing was applied on the puncture site to stop bleeding. Sample Size: 70 I have data...
8. ### Statistical test

Research Question: How much time does it take to stop bleeding (Haemostasis) after transracial catheterisation. Study product: Chitosan dressing used to stop bleeding from puncture site Method : Chitosan dressing was applied on the puncture site to stop bleeding. Sample Size: 70 I have data...
9. ### Effect Size

My sample size is 70. I have a series of values for time to haemostasis. I do not have pre and post data. The samples is analysed as mean and standard deviation. Let me know if more information is required.
10. ### Effect Size

What is effect size and how to calculate for a single group study?
11. ### Statistical test

Apologies for the confusion. I am sharing a reference study, I am trying to run my study in a similar way. Can you help to know what data was collected and how analysis is performed for the attached reference study.
12. ### Statistical test

I have used attached reference for my study. If you can, please help to know how analysis was performed, I can perform my analysis accordingly. Thanks in advance!
13. ### Statistical test

I am sharing the calculation. Treatment 1 = TTH for all 70 samples Treatment 2 = TTH - 10 for all 70 samples.
14. ### Statistical test

Null Hypothesis : Mean of Intra-subject Time to Haemostasis (TTH) = > 10 min Alternate Hypothesis : Mean of Intra-subject Time to Haemostasis (TTH) </= 10 min Sample Size : = 70 I have TTH values for all the 70 samples as performed during the study. I calculated values for (TTH - 10) for all...
15. ### Sample size calculation for clinical study

This is for sample size calculation.
16. ### Online software to perform Independent t -tests and Pearson's correlation

How reliable are these softwares ? Are the results same as the SPSS software?
17. ### Sample size calculation for clinical study

True. In our case it is wound size area reduction. I calculated using the software : http://www.statskingdom.com/sample_size_all.html As per data from available literature, considering the mean of wound size area is reduced to 13.18 +/- 19.64 cm2 with use of standard dressing and estimated mean...
18. ### Sample size calculation for clinical study

I have the value for Primary endpoint from literature review. Depending on whether we plan a RCT or Cohort, I plan to insert the value to get minimum number of patients required for the study. I use the online tool http://clincalc.com/Stats/SampleSize.aspx However, wanted to re-check with...