Investigate the importance of various factors, particularly human captial ones, associated with birth spacings of women.

Results show that human capital factors such as the woman’s education, job security and occupation are all significant in influencing the first spacing, and their role becomes even more important in the second and third spacing.

Job security shortens the timing of childbearing, better education and occupation as well as more girls from previous births all lead to delays in births.

Elementary school teachers have a shorter birth-spacing compared to junior high school teachers, indicating the role of personal preferences for children.