Table 3

Data from previously published surveys and the current survey that record the unadjusted or age adjusted prevalence of known diabetes (all types) or prevalence of previously undiagnosed diabetes in the UK white population. Prevalence figures (%) refer to all ages unless otherwise stated. Sources used to identify diabetic patients refers to (1) Population survey, (2) Hospital activity analysis, (3) Hospital clinic attendance, (4) General practice lists, (5) Prescription data, (6) Data from retinopathy screening programmes, (7) Laboratory systems. Where diabetes registers were used the sources used to compile the register are listed

YearLocationPopulation surveyedUnadjusted prevalenceAge adjusted prevalencePrevalence of undiagnosed casesSources used
1962Birmingham (RCGP)10185320.640.691
1968Edinburgh114680000.632–4
1972/4Whickham (age over 18)1227790.81
1973Whitehall (males, 40–64 y)13184030.90.31
1982Oxford14400791.081.041, 2
1983/4Poole15905681.010.973–6
1984Southall (white only)16270751.201.051, 3
1985Islington (age over 40)1710402.12.61
    (all ages)34851.61
1987Melton Mowbray (over 65)188616.03.31
1988Powys/Gwent19464001.014, 5
1988/9Poole20971221.181.053–6
1988/9Trowbridge21310001.311.262–4
    (age over 65)4.62–4
1990/2Isle of Ely (age 40–65)2211224.51
1992Manchester232850331.214
1992/3Bristol24715991.23–2.141.31–2.514
1993Tunbridge Wells252300001.184
1993RCGP263539771.64
1996Poole272561301.614
1996Poole20862871.861.553–6
1996Tayside43912741.942–7
1996Cardiff53869882.32–4
1998North Wales (all ages)4182002.462.292–4
        (age over 40)2018903.82–4
        (age over 65)751107.02–4