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Table 3 Recruitment pre- and post-intervention

From: SWAT-1: The effectiveness of a ‘site visit’ intervention on recruitment rates in a multi-centre randomised trial

Site and time-point Pre-intervention Post-intervention Change from pre- to post-intervention
  % of target (n/n = actual/target) % of target (n/n = actual/target) % point change % change P value
Site A at 1 month 13% (8/60) 30% (18/60) +17% 125% 0.01
Site A at 3 months 20% (36/180) 34% (61/180) +14% 69% 0.002
Site B at 1 month 27% (32/120) 19% (23/120) - 8% 39% 0.08
Site B at 3 months 14% (50/360) 18% (65/360) +4% 30% 0.06
Site C at 1 month 42% (25/60) 43% (26/60) +1% 4% 0.43
Site C at 3 months 42% (76/180) 38% (60/180) - 4% 11% 0.23