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Table 4 Adherence to trial procedure 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 (number screened eligible who received study information/total screened eligible)

Pre-intervention (number screened eligible who received study information/total screened eligible)

P value

Site A at 1 month

58% (15/26)

82% (28/34)

0.02

Site A at 3 months

63% (45/72)

87% (90/103)

<0.0001

Site B at 1 month

68% (49/72)

72% (54/75)

0.30

Site B at 3 months

66% (107/163)

72% (137/189)

0.08

Site C at 1 month

95% (40/42)

85% (33/39)

0.55

Site C at 3 months

90% (106/118)

88% (84/95)

0.37