Abstract |
Water consumption in a given region is dependent upon variables such as the rate of urbanization, population size, age composition, income, industrial development, recreational opportunities, etc. Estimates of future populations depend upon the calculation of age specific survival ratios for the present population. Mortality is the one stable component in population change, thus the careful calculation of present life tables provides the prerequisite for the development of reliable population projections from a basis of accurate survival ratios. The life tables developed for this research represents a series of probability statements. The data are based upon intervals of observation through the study period, 1950-1970. The reported measures of expectation of life at various ages are presented for the economic regions of Indiana, and like other life tables, are based upon the assumption that age-specific will remain the same in future years as was recorded during the observed periods. (Author Modified Abstract) |