Definition
BIRTHINTPOSTMO_ALL (B12_x) reports the succeeding birth interval, or the length of time in months, after the child was born, until the mother's next birth (i.e., before the child's next youngest sibling).
Because BIRTHINTPOSTMO_ALL relates to the child's younger sibling, last-born children and twins of last-born children are not included in this variable set.
BIRTHINTPOSTMO_ALL consists of a set of nineteen separate variables, covering the second-most-recent birth (BIRTHINTPOSTMO_02) up to the twentieth-most-recent birth (BIRTHINTPOSTMO_20) for a female respondent of childbearing age. If BIRTHINTPOSTMO_ALL is included in a data extract, all these separate variables are included in a researcher's data file.
Information for this variable was collected on all but the most recent birth for a woman, up to a maximum of her twentieth birth. In many cases, data were hypothetically collected on up to the twentieth births, but no women in the survey had so many births (e.g., no woman had a 19th or 20th birth). If, for example, no woman in a survey had 20 births and only blank values were included in the original DHS file, then BIRTHINTPOSTMO_20 would not be available for that survey in IPUMS-DHS.
