Here is the design of a clinical trial:

Official Title: Evaluation of an Online Decision Support Tool for Young Women With Breast Cancer During the Proposal for Preservation of Fertility

Included conditions:
- Breast Cancer

Study Armgroups:
- {'label': 'DECISIF', 'type': 'EXPERIMENTAL', 'description': 'Exposed to an online support decision tool, in addition of the standard oral information', 'interventionNames': ['Behavioral: Online support decision tool', 'Behavioral: standard oral information']}
- {'label': 'IRIS', 'type': 'ACTIVE_COMPARATOR', 'description': 'Exposed to a standard oral information', 'interventionNames': ['Behavioral: standard oral information']}

Interventions:
- {'type': 'BEHAVIORAL', 'name': 'Online support decision tool', 'description': 'Online support decision tool, in addition of the standard oral information', 'armGroupLabels': ['DECISIF']}
- {'type': 'BEHAVIORAL', 'name': 'standard oral information', 'description': 'standard oral information', 'armGroupLabels': ['DECISIF', 'IRIS']}

Primary Outcomes:
- {'measure': 'Multidimensional Measure of Informed Choice (MMIC)', 'description': 'Measure of patient autonomy for making decision, according to the Multidimensional Measure of Informed Choice (MMIC).\n\nA series of closed questions (based on the Osgoog\'s scale) on their feelings about this fertility preservation approach, describing attitudes in regards to "good / bad", "important / unimportant", "unhelpful" good thing / bad thing, "" pleasant / unpleasant "and" useful / useless ". Responses go from "very positive" (1) to "very negative" (7).', 'timeFrame': '1 day (During the PF consultation)'}

Please estimate the sample size based on the assumption: 
Two-sided test, significance level of 0.05%, 80% power.
Sample size and sampling design
          A sample size of 186 participants, that is, 93 in each arm, is planned. The required sample size was calculated in order to detect a difference of 20% (50%â70%) in the informed choice among women included in the IRIS and DECISIF groups and by using a two-sided test at a significance level of 0.05% and 80% power. Based on our experience, we estimate that half of the patients seen in fertility counselling today make an informed decision. We believe that a 20% increase in the number of patients who make an informed choice with the PDA would be acceptable in this context.