§ Helen Jones
To ask the Chancellor of the Exchequer what percentage of all female deaths in the Warrington, North Constituency for each of the years 1992 to 1997 were as a result of ovarian cancer. 
§ Mrs. Liddell
The information requested falls within the responsibility of the Chief Executive of the Office for National Statistics. I have asked him to arrange for a reply to be given.
Letter from Tim Holt to Helen Jones, dated 17 March 1998:As Director of the Office for National Statistics (ONS), I have been asked to reply to your parliamentary question asking what percentage of all female deaths in the Warrington North Constituency for each of the years 1992 to 1997 were as a result of ovarian cancer.The data requested are shown in the table below.
Percentage of female deaths from ovarian cancer to women resident in the county district of Warrington7 1992–19962 Year Percentage 1992 1.6 1993 0.9 1994 1.3 1995 2.1 1996 1.1 1ONS does not routinely publish data by parliamentary constituency, and could only do so at disproportionate cost. 2Data for 1997 are not yet available.Deaths due to ovarian cancer were identified as those certified with an underlying cause of International Classification of Diseases Ninth Revision [ICD9] 183.0.Deaths for 1992 represent the number of deaths registered in the year, while deaths from 1993 are deaths that occurred in each year. Also, new procedures for coding cause of death from 1993, and the absence of medical enquiries, mean that figures for 1993 onwards may not be exactly comparable with earlier years. However, for most conditions (including ovarian cancer) these effects are small. More details may be found in ONS Series DH2 no. 21 for 1993 (revised) and 1994, which was published in September 1996. Copies of this publication are available in the House of Commons library.