Here is the design of a clinical trial:

Official Title: The Effect of Physical Rehabilitation Among Patients Undergoing Radical Cystectomy Due to Urinary Bladder Cancer - the CanMoRe Study

Included conditions:
- Urinary Bladder Cancer

Study Armgroups:
- {'label': 'Individualized exercise', 'type': 'EXPERIMENTAL', 'description': 'The intervention group get a referral to physiotherapist in Primary Health Care in Stockholm County Council, close to where they live. Within the third week after discharge, the patients begin twelve weeks of biweekly exercise. The physical exercise is individually targeted aerobic and strength exercises, based on international recommendations for persons with cancer disease. The program is approved by resposible surgeons.', 'interventionNames': ['Other: The CanMoRe programme']}
- {'label': 'Active control group', 'type': 'ACTIVE_COMPARATOR', 'description': 'Oral and written information of a home-based exercise programme and information of supportive techniques to improve physical activity', 'interventionNames': ['Other: Home exercise']}

Interventions:
- {'type': 'OTHER', 'name': 'The CanMoRe programme', 'description': 'An exercise intervention in Primary Health Care', 'armGroupLabels': ['Individualized exercise']}
- {'type': 'OTHER', 'name': 'Home exercise', 'description': 'An active control group', 'armGroupLabels': ['Active control group']}

Primary Outcomes:
- {'measure': 'Six-minute walk test', 'description': 'The test reproduces activity of daily living at a sub maximal level. Output: meters Score: 0-900.', 'timeFrame': 'Change from baseline to after 12 weeks intervention'}

Please estimate the sample size based on the assumption: 
Statistical power of 80%, type 1 error set at 0.05, and adjustments for stratification and dropout.
Sample size
        The primary outcome is physical function, evaluated with the validated 6MWT. Based on data from our pilot study [28], we calculate an increase in 100âm in the intervention group, 70âm in the control group and a standard deviation of 30âm. To obtain a statistical power of 80% with a type 1 error set at 0.05 32 patients are needed (16 in each group). However, as the test is highly correlated with sex and age [37] we will stratify the analysis and increase the sample size.
        For the secondary outcome readmissions due to complications, we will estimate 20% readmissions in the intervention group compared with the proportion of patients being readmitted today, which is 45% in the control group. To obtain a statistical power of 80% with a type 1 error of 0.05, 112 patients are needed (56 in each group). Taken all this into account and guard against dropout, 120 patients (60 in each group) will be included in the study.