Power is the probability that a study will reject the null hypothesis. difference between the null and alternative hypotheses. level of significance, and the null vs. alternative difference. a numeric example of power and sample size estimation for the one-sample case.
During the procedure the patient is unconscious and unaware of the need to urinate. After the procedure, however, it may not be safe for the patient to walk. They may be too sick to take care of their own bathroom needs or their surgeon may feel that a catheter is best for their particular recovery.
When you have prostate cancer you may need a urinary catheter to help your. bladder or urethra heal or to help lessen the side effects (or unwanted changes in. your body) from treatment. It is very common for men with prostate cancer to. need a urinary catheter at some point during or after their treatment. In this.