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Table 1 Summary of the recruitment strategies looked at by the included studies.

From: Increasing recruitment to randomised trials: a review of randomised controlled trials

Area Strategy Reference
Trial Design Open versus blind 5, 6
  Patient preference design 7
Type of recruitment personnel Nurses versus doctors 8
  Trial Co-ordinator 10
Socio-cultural Lay advocates 11
  Address barriers to minority recruitment 12
Strategies for contacting patients Quantity of information given 9
  Mailing strategies 13
  Advance postcard 14
  With or without questionnaire 15
  Telephone reminder 16
Trial administration Internet system versus paper 17
Incentives Monetary incentive 18