I am attempting to edit a custom life table in DemProj - it seems to be constructed by using splicing method to create model life tables based on Brass. Does anybody have experience doing that?
I am not sure what you mean by "splicing", but hope that the following is useful.
Don Rowland's program for cohort component projections (see the CD contained in his "Demographic Methods and Concepts") uses Brass to extrapolate mortality of men and women by age. He designed it as a series of extremely user friendly Excel functions. When you experiment with the alpha's and beta's, you will see the results in the sheets called MainM and MainF.
I think you may be referring to the process of splicing together (combining) estimates of child and adult mortality to produce a complete life table. Check out UN Manual X on Indirect Estimation. Or see
Brass, William (1975) Methods for Estimating Fertility and Mortality from Limited and Defective Data. Chapel Hill, North Carolina: International Program of Laboratories for Population Statistics, University of North Carolina at Chapel Hill, xii + 159pp.
A bit late... but the following reference may be useful for your purpose:
Timæus IM and TA Moultrie. 2013. "Combining indirect estimates of child and adult mortality to produce a life table". In Moultrie TA, RE Dorrington, AG Hill, K Hill, IM Timæus and B Zaba (eds). Tools for Demographic Estimation. Paris: International Union for the Scientific Study of Population. http://demographicestimation.iussp.org/content/combining-indirect-estimates-child-and-adult-mortality-produce-life-table.
Hope it helps somehow.
Be sure to consult the Excel file provided with Timæus and Moultrie (2013) and available for download!
http://demographicestimation.iussp.org/sites/demographicestimation.iussp.org/files/OT_Fitting_2_parameter_model_life_tables.xlsx
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