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Table 6 Key recruitment lessons for hard-to-reach populations

From: Recruiting hard-to-reach pregnant women at high psychosocial risk: strategies and costs from a randomised controlled trial

• Identify and engage with key referrer groups

• Use continuous and active recruitment strategies

• Ensure research strategies and resource are flexible to adapt to changing circumstances and context

• Use study-specific trained recruitment staff (e.g. research nurses)

• Identify the most suitable setting in which to approach potential participants