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Participant recruitment (Refusal factors (Intrusive and burdensome…
Participant recruitment
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Pay
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How much is enough?
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Too much
Bribe or coercion
Ref: Grady 2005; Walter, Burke & Davis 2013
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Refusal factors
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Ref: Floyd et al., 2010; Scharff et al., 2010; Tinker & Armstrong 2008; Mfutso-Bengo et al., 2008; Limkakeng et al., 2013
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