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Table 2 Breakdown of CONSORT flowchart according to source of recruitment

From: Recruitment and representativeness of blood donors in the INTERVAL randomised trial assessing varying inter-donation intervals

 

Invitations

Exclusions: Post-attendance and prior to consent

INTERVAL cohort and trial

Recruitment source

Invited

Attended donation

INTERVAL cohort

Randomised

Not randomised

Centre

144,852

71,445

(49.3 %)

39,500

31,945

(22.1 %)

29,549

2396

Mobile (platelet)

21,585

2330

(10.8 %)

586

1744

(8.1 %)

1696

48

Mobile (10-mile)

190,081

15,886

(8.4 %)

10,648

5238

(2.8 %)

5009

229

Mobile (30-mile)

183,941

5524

(3.0 %)

3113

2411

(1.3 %)

2325

86

No invitationa

-

10,834

-

3447

7387

-

6684

703

Total

540,459

106,019

57,294

48,725

45,263

3462

  1. aWalk-in donors without a previous invitation; no denominator available