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Mr. Lansley: To ask the Chancellor of the Exchequer what the life expectancy at birth of (a) a male and (b) a female belonging to social class (i) I, (ii) II, (iii) IINM, (iv) IIIM, (v) IV and (vi) V has been in each of the last 25 years for which figures are available. 
The National Statistician has been asked to reply to your recent question asking what the life expectancy at birth of (a) a male and (b) a female belonging to social class (i) I, (ii) II, (iii) IIINM, (iv) HIM, (v) IV and (vi) V has been in each of the last 25 years for which figures are available. I am replying in his absence. (199454)
Available figures are from the ONS Longitudinal Study, a one per cent. sample of the population. The most recently available estimates were published in Health Statistics Quarterly 15 1 for the period 1972 to 1999. The attached table presents life expectancy at birth by social class for males and females for five-year periods from 1972 to 1996, and for 19971999.
Mrs. Spelman: To ask the Chancellor of the Exchequer when the Government abolished mortgage income tax relief; and what the estimated change in taxation for a typical household with a mortgage over £30,000 in 200405 is due to its abolition. 
Mr. Arbuthnot: To ask the Chancellor of the Exchequer how the calculations of the (a) RPI and (b) CPI made by the Office for National Statistics take into account changes in the standard quantities of the representative commodities contained in the indices. 
As National Statistician, I have been asked to reply to your parliamentary question asking how the calculations of the RPI and CPI made by the Office for National Statistics take into account changes in the standard quantities of the representative commodities contained in the indices. (200591)
Within each year, the RPI and CPI are fixed quantity consumer price indices. That is, changes in prices as measured by both indices are calculated as the change in the total cost to the average consumer of a basket of goods and services of fixed composition, quantity and quality.
In practice, this is achieved by (a) holding constant each year the sample of representative goods and services for which prices are collected each month in estimating price changes more generally; and (b) applying a fixed set of weights to price changes for each of the items such that their influence on the overall index reflects their importance in the typical household budget. In this way, changes in the RPI and CPI indices from month to month reflect only changes in prices, and not ongoing variations in consumer purchasing patterns.
However, the contents of the RPI and CPI baskets of goods and services and associated expenditure weights are updated annually so that the indices remain representative of consumer spending patterns over time. This is important in helping to avoid potential biases in consumer price indices that might otherwise arise, for example, due to the development of entirely new goods and
For the RPI, changes to the items and weights are introduced in February each year, but with an overlapping collection of prices in January. This means that the figures for each year can be 'chain linked' together to form a long-run price index spanning many years. This procedure ensures that the annual changes to the basket and weights have no impact on estimated changes in prices as measured by the RPI. The same basic approach is likewise adopted in the CPI although, for technical reasons, it is necessary to chain link the published index twice each year rather than only once as in the RPI.
These issues are described in greater detail in a range of articles published by ONS, which are available on the National Statistics website. The basic principles underlying the construction of the RPI and CPI are described in:
Paul Holmes: To ask the Chancellor of the Exchequer how many redundancies have been notified in each quarter of each year since June 2001, broken down by nation and region; what these figures represent as a percentage of the total work force, broken down by nation and region; and if he will make a statement. 
The Labour Force Survey provides estimates of redundancies experienced by survey respondents in the three month period before their survey interviews. The attached table gives Labour Force Survey estimates for number of redundancies in each nation and region of the UK for each three month period from 2001 to 2004. The table also shows redundancy rates, i.e. redundancies as a proportion of the number of employees in each area.
|Three months ending||UK||GB||England||North east(7)||North west||Yorkshire and the Humber||East Midlands||West Midlands|
|Three months ending||Eastern||London||South east||South west||Wales(7)||Scotland||Northern Ireland(7)|
|Three months ending||UK||GB||England||North east(9)||North west||Yorkshire and the Humber||East Midlands||West Midlands|
|Three months ending||Eastern||London||South east||South west||Wales(9)||Scotland||Northern Ireland(9)|
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