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Table 1

From: Recruiting patients cost-effectively by mail

  Centrally-held register GP practices (Local register) Others* Total
Invitations sent 300,188 120,875 2223 423,286
Patients enter run-in 16104 9,741 635 26480
Patients randomised 9013 (3.0%) 6038 (5.0%) 430 (19.3%) 15481 (3.7%)
  1. * HPS follow up/Self/friends/Hospital referral