Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
For women who want to have a/another child, PREFTIMECH (V603) reports the amount of time, in months or years, they would like to wait before the birth of a/another child (top-coded at 20 years). The complementary variable PREFTIMECH (V604) reports responses to the same question, but in terms of years only, top-coded at 6+ years.
PREFTIMECH includes women who are either pregnant or at risk of pregnancy. However, the definition of "at risk of pregnancy" varies across samples, and the way this variable was asked and calculated also changed over time; see Comparability.