Here is the design of a clinical trial:

Official Title: Feasibility and Cost-effectiveness of a Multidisciplinary Home-based Telehealth Intervention Program to Reduce Falls in Parkinson´s Disease (TeleFall).

Included conditions:
- Parkinson Disease

Study Armgroups:
- {'label': 'Study group', 'type': 'ACTIVE_COMPARATOR', 'description': 'The study group will receive the multidisciplinary tele-health intervention plus standard medical care', 'interventionNames': ['Procedure: Multidisciplinary tele-health intervention (physical therapy, neurologist, nurse, psychologist)']}
- {'label': 'Control group', 'type': 'PLACEBO_COMPARATOR', 'description': 'The control group will receive the best standard medical care', 'interventionNames': ['Other: Standard in-office medical care']}

Interventions:
- {'type': 'PROCEDURE', 'name': 'Multidisciplinary tele-health intervention (physical therapy, neurologist, nurse, psychologist)', 'description': 'Non-pharmacological and pharmacological treatment provided by telemedicine plus in-office visits', 'armGroupLabels': ['Study group'], 'otherNames': ['Education']}
- {'type': 'OTHER', 'name': 'Standard in-office medical care', 'description': 'Non-pharmacological and pharmacological treatment provided in-office visits', 'armGroupLabels': ['Control group']}

Primary Outcomes:
- {'measure': 'Incidence of falls reduction', 'description': 'Comparison of incidence of falls between the study and control groups by using diaries and wearable sensors', 'timeFrame': '8 months'}
- {'measure': 'Feasibility', 'description': 'Number of virtual videoconferences completed', 'timeFrame': '8 months'}

Please estimate the sample size based on the assumption: 
80% power, 5% probability of type 1 error, 95% confidence level, 9% dropout rate
Sample size
        We calculated the sample size using the EpidatÂ® 4.1 statistical software. Considering that a 50% fall reduction in the number of falls compared to baseline will be obtained in 24% of the participants in the intervention group and 2% in the control group, we estimated that 70 patients (35 per group) would provide 80% power (5% probability of type 1 error) with a confidence level of 95%. By assuming a 9% dropout rate, a total sample of 76 patients will be then included in this study.