The information requested falls within the responsibility of the UK Statistics Authority. I have asked the authority to reply.
Letter from Karen Dunnell, dated March 2009:
As National Statistician, I have been asked to reply to your Parliamentary Question asking how many people registered as disabled have been employed in (a) Barnsley, (b) Doncaster and (c) South Yorkshire in each of the last 10 years. (264544)
The Office for National Statistics (ONS) does not compile estimates of the number of persons registered as disabled who were employed. As an alternative we have provided estimates of the number of persons resident in the areas specified, who identified themselves as having a limiting health problem lasting more than 12 months, and were employed.
These estimates in Table 1 are from the Annual Population Survey (APS) and its predecessor the annual Labour Force Survey (LFS) which follow the International Labour Organisation (ILO) definition of employment. Figures have been provided for periods up to June 2008 which is the latest period for which figures are available.
As these estimates are for a subset of the population in small geographical areas, they are based on small sample sizes, and are therefore subject to large margins of uncertainty. A guide to the quality of the estimates is given in Table 1.
Thousand 12 months ending Doncaster Barnsley South Yorkshire February 1999 11 14 63 February 2000 16 14 77 February 2001 13 16 71 February 2002 14 14 79 February 2003 13 16 76 February 2004 12 19 82 March 2005 15 20 89 March 2006 15 18 87 March 2007 15 18 81 March 2008 15 19 85 June 20082 ***20 ***15 *87 1 Persons age 16+ who had a limiting health problem lasting more than 12 months. 2 Coefficients of Variation have been calculated for the latest period as an indication of the quality of the estimates. See Guide to Quality below. Guide to Quality: The Coefficient of Variation (CV) indicates the quality of an estimate, the smaller the CV value the higher the quality. The true value is likely to lie within +/- twice the CV—for example, for an estimate of 200 with a CV of 5 per cent., we would expect the population total to be within the range 180-220 Key Coefficient of Variation (CV) (%) Statistical Robustness * 0 [le] CV<5 Estimates are considered precise. ** 5 [le] CV <10 Estimates are considered reasonably precise. *** 10 [le] CV <20 Estimates are considered acceptable. **** CV ≥ 20 Estimates are considered too unreliable for practical purposes. Source: Annual Population Survey and Annual Labour Force Survey.