Decades of research suggest that a stable, marriage protects adult partners against premature death and illness, and provides children with the best physical health outcomes. The relationship of marriage to better health outcomes continues to be found in the most recent national health surveys and longitudinal studies. These studies indicate married adults live longer and enjoy better physical ...

Introduction: Iran experienced a dramatic fertility decline during recent decades. There was also an indication of a shift towards later childbearing from 2000. Past research on fertility has shown that the education variable is the most important determinant of fertility behaviors. However, the impact of education on fertility timing in Iran has been less considered. Methods: In a cross secti...

A class of statistics based on the integrated weighted difference in Kaplan-Meier estimators is introduced for the two-sample censored data problem. With positive weight functions these statistics are intuitive for and sensitive against the alternative of stochastic ordering. The standard weighted log-rank statistics are not always sensitive against this alternative, particularly if the hazard ...