Here is the design of a clinical trial:

Official Title: A Randomised Controlled Trial to Test the Effects of Fish Aggregating Devices and SBC Activities Promoting Fish Consumption in Timor-Leste

Included conditions:
- Dietary Deficiency

Study Armgroups:
- {'label': 'FAD + SBC', 'type': 'ACTIVE_COMPARATOR', 'description': 'Community will be exposed to increased availability of fish from a fish aggregating device and will receive information and messaging as part of a social and behaviour change communication about consuming fish.', 'interventionNames': ['Behavioral: Social and behaviour change communication', 'Other: Fish aggregating device']}
- {'label': 'FAD only', 'type': 'ACTIVE_COMPARATOR', 'description': 'Community will be exposed to increased availability of fish from a fish aggregating device only', 'interventionNames': ['Other: Fish aggregating device']}
- {'label': 'SBC only', 'type': 'ACTIVE_COMPARATOR', 'description': 'Community will receive information and messaging as part of a social and behaviour change communication about consuming fish.', 'interventionNames': ['Behavioral: Social and behaviour change communication']}
- {'label': 'Control', 'type': 'NO_INTERVENTION', 'description': 'Control (No FAD or SBC)'}

Interventions:
- {'type': 'BEHAVIORAL', 'name': 'Social and behaviour change communication', 'description': 'Each SBC treatment community will receive nutrition content and learning through savings groups. The group members will participate in skill-building activities that promote five key behaviours about fish nutrition and household decision making on fish consumption as part of facilitated discussions, interactive learning sessions, and a video-based facilitated dialogue. Increased fish consumption through SBC mass attendance events through marketing of fish vendors, interactive learning, and edu-tainment competitions promoting fish consumption. SBC will raise awareness of the benefits of eating fish as part of a balanced diet, with a particular focus on pregnant and lactating mothers, and children under 5 years of age.', 'armGroupLabels': ['FAD + SBC', 'SBC only']}
- {'type': 'OTHER', 'name': 'Fish aggregating device', 'description': 'This is a moored line attached to buoys in coastal waters that attracts oceanic fish to it, to make it easier for small-scale fishers to catch them using their existing gear and boats. This FAD will work to increase the catch rate and hence, the availability of fish for sale in upland community markets.', 'armGroupLabels': ['FAD + SBC', 'FAD only'], 'otherNames': ['FAD']}

Primary Outcomes:
- {'measure': 'Per capita household fish consumption', 'description': 'measured as total quantity (g) of fish consumed by the household in the previous seven days divided by the number adult equivalents in the household.', 'timeFrame': '1 year'}
- {'measure': 'Frequency of fish consumed at household level', 'description': 'measured as the number of days fish were consumed out of the previous seven days.', 'timeFrame': '1 year'}

Please estimate the sample size based on the assumption: 
At least 80% statistical power and 25% attrition rate.
Sample size and sampling procedure
        The sampling frame comprises rural, inland households in Timor Leste. We conducted a power calculation using the command clustersampsi in STATA based on secondary data, and a primary outcome of fish consumption per household. We assumed a minimum detectable effect of 15% and an intra-cluster correlation coefficient equal to 0.05. To achieve at least 80% statistical power, we require a sample size of 575 inland community households selected from 25 communities (that is, we sample 23 households in each community). Adjusting for 25% attrition, we estimate that a sample size of 720 is requiredâabout 30 households per site.
        Sampling follows a multi-stage procedure. In the first stage, 6 coastal municipalities were purposively selected based on the coverage of Mercy Corps programming of VSLA groups. The second step involves compiling a list of rural coastal fishing villages with over 10 active fishing vessels and randomly selecting one village within each municipality. In the third step, a list of inland villages within a 30 km radius of each coastal villages and with active presence of a VSLA was compiled. Although we include only villages participating in VSLAs, the typical size of a VSLA (about 15 members) is less than the required number of households per village. In the fourth step, therefore, we generate a list of all households in the village, both VSLA members and non-members. To ensure the required sample size is satisfied (in accordance with the power analysis) we will randomly select additional households from the list of those not participating in VSLAs. The chosen households will be visited and asked if they would be willing to participate in the study. Where households are not willing, the closest neighbouring household will be asked, and so on.