1. Context and population mapping
   You share your domain, setting, and who you believe your study should apply to. We clarify the source population, accessible population, and realistic sampling frame.
2. Review of aims, endpoints, and constraints
   We briefly revisit aims, primary endpoints, and feasibility notes so that sampling and allocation remain aligned with the bigger design.
3. Drafting the sampling strategy
   A first pass sampling strategy is drafted (simple random, stratified, cluster, systematic, convenience, purposive, etc.) with short notes on strengths and limitations.
4. Recruitment pathway and screening flow
   We outline how participants or units move from being approached to screened, assessed for eligibility, and enrolled, including refusals and ineligible cases.
5. Randomization or allocation design
   Where groups or arms are present, we propose a practical randomization or allocation scheme (random number tables, software, envelopes, etc.) suitable for your resources.
6. Allocation concealment planning
   We identify how allocation will be concealed from investigators or participants where relevant, and document the procedure clearly for protocol and ethics forms.
7. Risk and bias check
   The draft strategy is reviewed for major selection bias risks, and simple mitigations are suggested within realistic PhD level constraints.
8. Text and flow documentation
   A sampling and allocation text block is assembled, alongside a short flow description that can later be adapted into diagrams or consort style figures.
9. Guide and ethics alignment
   The language is tuned so that it fits local norms (for example, common phrases used by your department or ethics committee) , making approvals smoother.
10. Delivery and one refinement cycle
    You receive the written strategy and can discuss it with your guide. One round of refinement is included to adjust the plan or wording after feedback.

• Sampling frame and strategy description that explains who you are drawing from and how, in language acceptable to reviewers.
• Recruitment and screening flow narrative describing the path from approached subjects to enrolled subjects and analysis sets.
• Randomization or allocation method write up (where applicable) including sequence generation and implementation details.
• Allocation concealment procedure suited to your context, whether single centre clinical, lab based, field, or survey work.
• Bias and limitation paragraph which acknowledges realistic constraints and shows reviewers you have thought about them.
• Protocol ready text blocks that can be pasted into your Methods/Sampling/Randomization sections with minor editing.

The objective is to make your sampling and allocation strategy believable, clearly documented, and aligned with standard terminology, without over engineering it for a PhD scale project.

Deliverables and formats

• One sampling & recruitment description in DOCX or equivalent editable format.
• One randomization/allocation & concealment description (where relevant) ready to drop into protocol or ethics forms.
• Short bias and feasibility notes highlighting major assumptions and practical considerations.
• Optional schematic outline (textual) that can later be converted into a consort style or flow diagram.

What is included

• Discussion to arrive at a realistic sampling approach for your context.
• Design of a feasible randomization or allocation plan where your study has multiple groups or arms.
• Suggestions for simple allocation concealment that can actually be executed with available staff and resources.
• Drafting of protocol ready methods text that matches typical university or ethics committee headers.
• One structured refinement cycle after guide or internal review.

What is not included

• Full sample size calculation or detailed power analysis (covered under Statistical Links and related segments) .
• Design and management of complex multi centre, multi arm, or industry scale randomization systems.
• On ground execution of recruitment, randomization, or monitoring of adherence to the scheme.
• Legal or regulatory review of your methods; we focus on methodological clarity and feasibility.

Best time to book

• After your basic protocol blueprint and aims are reasonably clear.
• When your guide or ethics committee is asking for more detail on how participants or units will actually be selected and assigned.
• Before committing to a sample size calculation, so that the sampling strategy and groups are defined correctly.
• When you are unsure how to describe randomization and concealment in a way that sounds robust but is still doable.

Helpful inputs from your side

• Your draft aims, primary outcome, and basic idea of groups/arms if any.
• Information about the setting (single/ multiple sites, clinic, lab, community, online, etc.) .
• Any departmental or ethics guidelines you already have about sampling or randomization.
• Approximate numbers available (patients, samples, responses) and important constraints such as time windows or eligibility rules.
• Examples of previously accepted protocols from your department, if available.