Here is the design of a clinical trial:

Official Title: Community-based Venues for Delivery of Healthcare Services in Umlazi, South Africa: Proof of Concept Pilot Conducted in Hair Salons

Included conditions:
- Pre-Exposure Prophylaxis
- STI
- Contraceptive Usage

Study Armgroups:
- {'label': 'Intervention Salons', 'type': 'EXPERIMENTAL', 'description': 'Intervention: Behavioral: Provision of sexual health preventative services in the salon setting', 'interventionNames': ['Behavioral: Provision of sexual health preventative services in the salon setting']}
- {'label': 'Control Salon', 'type': 'NO_INTERVENTION', 'description': 'No Intervention'}

Interventions:
- {'type': 'BEHAVIORAL', 'name': 'Provision of sexual health preventative services in the salon setting', 'description': 'Participants at intervention salons will be offered a choice of receiving daily PrEP and/or contraceptives (oral and injectables). Participants that elect to receive at least PrEP or contraceptives will also be offered STI testing.\n\nFollow-up visits will be planned for 3, 6, 9, and 12-months. Attendance at follow-up visits for monitoring and medication refill will be encouraged using text message reminders, WhatsApp support groups, and lottery-based incentives for free salon services.', 'armGroupLabels': ['Intervention Salons'], 'otherNames': ['PrEP (combined tenofovir/emtricitabine)', 'STI testing', 'Hormonal birth control (Oral, Injectable)']}

Primary Outcomes:
- {'measure': 'Uptake of Preventative Sexual Health Services', 'description': 'We will measure uptake of the intervention as the proportion of eligible women who agree to salon-based contraception (first-time users and new users) and separately to salon-based PrEP.', 'timeFrame': 'Months 4 to 16'}

Please estimate the sample size based on the assumption: 
No formal statistical comparisons (p-values) are planned. The 95% confidence limits for uptake and retention are 33%-47% and 39%-61%, respectively.
Statistical analysis and sample size
        We will measure uptake of the intervention as the proportion of eligible women who agree to salon-based PrEP and separately to salon-based contraception. We will assess feasibility by collecting process measures, such as additional time spent in the salon receiving the intervention. We will evaluate retention as continued use of PrEP and contraception separately, defined as one additional visit within 6 months with continued treatment (PrEP, contraception or both). After 12 months, we will perform exit interviews as described above. We plan to enrol 250 individuals in the intervention arm, with a goal of 100 of those individuals starting PrEP (40% PrEP uptake), and 250 individuals in the control arm, for a total of 500 participants. These enrolment goals are based on budget constraints and goals of a pilot study to assess feasibility and acceptability. We anticipate that 50 of the 100 participants who accept PrEP will be retained at 1 year. The 95% confidence limit would be 33%â47% for uptake (40%) and 39%â61% for retention (50%). We did not perform formal sample size calculations, since the primary focus of the study is to assess feasibility and determine if there is a signal for potential efficacy. No formal statistical comparisons (p-values) are planned between the two treatment arms. While it is clusters that are being randomised, analysis will be conducted at the individual level. We will summarise each group separately and not do comparisons between groups. Differences between clusters will be assessed for planning of future studies.