Definition
For women who gave birth in the three to five years before the survey, ANVISNOTOP20_ALL reports the number of antenatal visits, topcoded at 20+ visits. Women who did not see anyone for antenatal care during the pregnancy are coded 0. The related variables for ANVISNO_ALL supply the same material without imposing a consistent topcode.
ANVISNOTOP20_ALL consists of a set of six separate variables, covering the most recent birth (ANVISNOTOP20_01) up to the sixth-most-recent birth (i.e., ANVISNOTOP20_02, ANVISNOTOP20_03, ANVISNOTOP20_04, ANVISNOTOP20_05, and ANVISNOTOP20_06) during the reference period prior to the survey. If ANVISNOTOP20_ALL is included in a data extract, all these separate variables are included in a researcher's data file.
For many surveys, particularly those taken after 2000, this information was collected for only the most recent birth (ANVISNOTOP20_01) and, in some cases, the second-most-recent birth (ANVISNOTOP20_02). Surveys in which the data were collected for only the most recent birth are noted in the comparability section.
For other surveys, information for this variable was collected on all births, up to a maximum of six, in the reference period; exceptions in which data were collected on only the most recent birth(s) are noted in the comparability section. In many cases, data were hypothetically collected on up to six births, but no women in the survey had so many births (e.g., no woman had 4 or more births in 3 years, or had 5 or 6 births in 5 years). If, for example, no woman in a survey had 6 births in five years and only blank values were included in the original DHS file, then ANVISNOTOP20_06 would not be available for that survey in IPUMS-DHS.
