To ask the Scottish Executive how many people in (a) each NHS board area and (b) total were classified as clinically obese in each of the last five years, expressed also as a percentage of the population and showing year-on-year percentage changes.
The exact number of people diagnosed with clinical obesity in Scotland in each of the last five years, is not available centrally. However, there are two sources from which estimates can be derived regarding the prevalence of obesity:
1. National estimates of the numbers of people consulting for obesity can be given based on the number of patients seen for the condition in general practices participating in PTI (Practice Team Information). PTI data are obtained from a sample of Scottish general practices whose population covers the full range of age, sex, deprivation and urban/rural classes existing in Scotland. The number of participating practices is too small to allow estimates for individual NHS board areas.
2. National prevalence estimates can be obtained from the 2003 Scottish Health Survey. The Scottish Health Survey website (http://www.show.scot.nhs.uk/scottishhealthsurvey/) shows the percentage of respondents regarded as obese (body mass index (BMI) (kg/m2) > 30) in each NHS board area, but does not give information on the underlying numbers. Information is also available from earlier surveys in 1998 and 1995.
The estimated number of patients who consulted their general practices in Scotland for “obesity” based on PTI data over the financial years ending 31 March 2001 to 2005 is shown in the following table 1. Obesity in these consultations was not precisely defined in terms of height, weight or BMI. These figures are likely to considerably underestimate the true number of obese people in Scotland because many people with obesity do not consult their GP practice. In addition, these figures exclude people with obesity who did not consult their practice during the year of the analysis. Also, patients may visit the general practice for a condition e.g. diabetes, hypertension, related to their obesity without obesity itself being recorded. The numbers shown in table 1 are less than a tenth of the Scottish Health Survey estimates.
Table 1. Estimated Number of Patients Contacting their GP or any Member of the Practice Team1 Regarding Obesity; Financial Years Ending 31 March 2001 to 2005
Financial Year | Number of Patients Seen |
GP Only | Full Practice Team |
2000-01 | 25,600 | |
2001-02 | 41,300 | |
2002-03 | 40,400 | |
2003-04 | 35,300 | 45,000 |
2004-05 | 28,800 | 36,700 |
Note: 1. The Practice Team includes GPs, practice nurses, district nurses and health visitors. Before April 2003 data is available on GP visits only.
Table 2 shows the percentage of respondents from the 2003 Scottish Health Survey who were obese (BMI > 30) in each NHS board area. Information on the underlying numbers is not provided on the Scottish Health Survey website.
Table 2. Percentage Obese (Defined as Body Mass Index (BMI) >30), by NHS Board and Sex, Ages 16+1,2
| Men3 | Women3 |
Argyll and Clyde | 23.2 | 27.9 |
Ayrshire and Arran | 25.3 | 26.6 |
Borders | 23.4 | 23.6 |
Dumfries and Galloway | 27.5 | 30.0 |
Fife | 20.4 | 27.1 |
Forth Valley | 17.2 | 32.0 |
Grampian | 20.1 | 25.6 |
Greater Glasgow | 21.5 | 23.9 |
Highland | 23.3 | 27.8 |
Lanarkshire | 25.5 | 25.9 |
Lothian | 25.5 | 22.3 |
Orkney, Shetland, Western Isles | [29.4] | [26.8] |
Tayside | 16.2 | 28.0 |
Scotland | 22.4 | 26.0 |
Notes:
1. Extract from Scottish Health Survey 2003, Health Board Tables, http://www.scotland.gov.uk/Resource/Doc/76169/0019728.xls.
2. Those with valid BMI measurement.
3. Figures in square brackets are based on small samples.
Additionally, Table 5.7 of the 2003 Scottish Health Survey (http://www.scotland.gov.uk/Resource/Doc/76169/0019729.pdf) shows trends in obesity over the 1995, 1998 and 2003 surveys for respondents aged 16 to 64. Between the 1998 and 2003 survey the proportion of obese men aged 16 to 64 years increased from 18.8% to 22.0%, and for women increased from 20.9% to 23.8%.