Abstract
For the purpose of investigating the factor relating to the recent average life span (e0) in Japan, relationships between e0 and 22 indices concerning dwelling, economy, education and health preceding e0 for 5 years were studied by annual changes and geographical differences, and the following results were obtained. 1) In the time serial correlation coefficients between e0 and indices, those with waterworks extension rate (W-rate) and the number of cases visited by public health nurses in charge of consultation about adult disease (C-number) were positive and significant, and those with livelihood protection rate (L-rate) were negative and significant. 2) In the geographical correlation coefficients between e0 and indices, and those or partial correlation coefficients between annual changes of e0 and indices, only those with W-rate and L-rate were significant in common with 3 methods of calculations for men, so were C-number for women. 3) In the multiple regression analyses of the annual changes of e0 on indices by forward selection procedure, W-rate was selected as the first variable for men and Cnumber for women, and L-rate as the second for both sexes. Above results suggest that W-rate and L-rate relate to e0 for men and C-number and L-rate for women.
