Book contents
- Frontmatter
- Contents
- List of figures
- List of tables
- PART I
- PART II
- PART III
- APPENDICES
- 1 A list of the reconstituted parishes from which data were drawn and of the names of those who carried out the reconstitutions
- 2 Examples of the slips and forms used in reconstitution and a description of the system of weights and flags employed
- 3 Truncation bias and similar problems
- 4 Tests for logical errors in reconstitution data
- 5 Correcting for a ‘missing’ parish in making tabulations of marriage age
- 6 The estimation of adult mortality
- 7 Adjusting mortality rates taken from the four groups to form a single series
- 8 The calculation of the proportion of women still fecund at any given age
- 9 Summary of quinquennial demographic data using revised aggregative data and produced by generalised inverse projection
- 10 Selection criteria used in compiling the tables in chapters 5 to 7
- Bibliography
- Name index
- Place index
- Subject index
- Cambridge Studies in Population, Economy and Society in Past Time
7 - Adjusting mortality rates taken from the four groups to form a single series
Published online by Cambridge University Press: 07 September 2010
- Frontmatter
- Contents
- List of figures
- List of tables
- PART I
- PART II
- PART III
- APPENDICES
- 1 A list of the reconstituted parishes from which data were drawn and of the names of those who carried out the reconstitutions
- 2 Examples of the slips and forms used in reconstitution and a description of the system of weights and flags employed
- 3 Truncation bias and similar problems
- 4 Tests for logical errors in reconstitution data
- 5 Correcting for a ‘missing’ parish in making tabulations of marriage age
- 6 The estimation of adult mortality
- 7 Adjusting mortality rates taken from the four groups to form a single series
- 8 The calculation of the proportion of women still fecund at any given age
- 9 Summary of quinquennial demographic data using revised aggregative data and produced by generalised inverse projection
- 10 Selection criteria used in compiling the tables in chapters 5 to 7
- Bibliography
- Name index
- Place index
- Subject index
- Cambridge Studies in Population, Economy and Society in Past Time
Summary
The research design which led to the division of the 26 reconstitution parishes into four groups has been described elsewhere, as has the reason for treating group 2 as the reference group to which data drawn from the other groups should be aligned. The issue covered in this appendix is the implementation of this strategy when dealing first with infant and child mortality, and then with adult mortality.
Infant and child mortality
The four groups were chosen so that there were long overlaps between them. It will be recalled that group 1 covers the period 1580–1729 (15 parishes); group 2, 1600–1729 (20 parishes); group 3, 1680–1789 (18 parishes); group 4, 1680–1837 (8 parishes). The separate tabulations for each group showed that in overlap periods infant and child mortality rates in the groups differed, sometimes considerably, and that therefore adjustment between the rates for each pair of adjacent groups was necessary to produce a single series. The adjustment process might appear to involve reconciling two conflicting desiderata. On the one hand, it is the ratio of rates drawn from two adjacent groups over a period close to the changeover between them which is at issue. Therefore, adjustment ratios based on a brief overlap period are attractive since there is no certainty that the appropriate adjustment ratio would be constant over the whole period of a long overlap.
- Type
- Chapter
- Information
- English Population History from Family Reconstitution 1580–1837 , pp. 601 - 609Publisher: Cambridge University PressPrint publication year: 1997