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. 2005 Feb 22;92(5):949–954. doi: 10.1038/sj.bjc.6602396

Table 1. Recruitment of centres to the trial.

Trial centre Date centre joined study Population contributed Cumulative population
Guildford February ‘91 12 110 12 110
Edinburgh May ‘91 5659 17 769
Derby June ‘92 10 853 28 622
Avon August ‘92 8895 37 517
Manchester September ‘92 7181 44 698
Stoke September ‘92 8077 52 775
Epping October ‘92 6938 59 713
N. Nottinghamshire November ‘92 3621 63 334
Nottingham November ‘92 8353 71 687
Worthing January ‘93 6506 78 193
Aylesbury February ‘93 1942 80 135
Bromley February ‘93 5834 85 969
Hull July ‘93 9793 95 762
Swindon November ‘93 4601 100 363
Bradford January ‘94 14 425 114 788
Sheffield July ‘94 6187 120 975
Warrington September ‘94 7105 128 080
Wirral October ‘94 7047 135 127
Cumbria November ‘94 6123 141 250
North London January ‘95 4455 145 705
Peterborough February ‘95 4393 150 098
Newcastle November ‘95 6288 156 386
Swansea January ‘96 4535 160 921