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Table 2 Recruitment strategies to identify participants for screening stage of PODOSA

From: Recruiting South Asians to a lifestyle intervention trial: experiences and lessons from PODOSA (Prevention of Diabetes & Obesity in South Asians)

Source *No. of referrals/responses (% of total) Initial target (%) for screening participants by source +% of total actually screened (estimated) Judgement on success of strategy
1. NHS     
1 (a) Direct referrals from health care professionals 55 (3) 25 1 Largely unsuccessful
1 (b) Written invitations via GPs to potential participants 265 (13) 25 11 Low (5.2%) response rate to letters was resource intensive
1 (c) Written invitation via diabetes register to diabetes patients (to target their relatives) 16   0 Unsuccessful
1 (d) Search of practice lists for IGT/IFG 4   0 Unsuccessful
Subtotal 336 (16) 50 12 Limited success
2. Community     
2 (a) Via research team contacts, self referrals and 'snowball' effect > 630 (30)   47 Successful particularly in Glasgow, at minimal cost
2 (b) Community organisations and recruiters, assisting with recruitment for small payment 618 (29) (a), (b) and (c)
50
26 Initially unsuccessful when relying on goodwill, moderately successful when payment offered
2 (c) Research team recruitment via visits/talks 480 (23)   14 Moderately successful but labour intensive
Subtotal 1728 (82) 50 87 Successful
3. Media techniques     
3 (a) Written articles in the press, radio interviews, leaflet and poster distribution, website and e-mail distribution lists Exact number not
known, but few
Mainly to raise awareness with the expectation of some
self-referrals
0 Not successful in directly enrolling participants
3 (b) Ethnic marketing and consultancy company 25 (1)   1 Limited success achieved by fieldwork, not mass marketing
Subtotal > 25 (2) - 1 Unsuccessful
Totals > 2089 (100) 100% 100% (1319)  
  1. * total number of potentially suitable participants referred to research team or responded to invitation letters for the screening stage
  2. + 1319 of 2089 referrals were eligible, available and willing to attend a screening visit to have blood glucose measured, percent of total screened is given