Does Childbearing Delay Result in More Multiples?

Since the 1980s, the number of multiple births has jumped from roughly 20 sets per 1,000 live births to almost 35 sets per 1,000 live births, a new study has found. A sizable proportion of multiple births are attributable simply to delaying childbearing, the author says.

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Since the 1980s, the number of multiple births has jumped from roughly 20 sets per 1,000 live births to almost 35 sets per 1,000 live births, a new study has found. A sizable proportion of multiple births are attributable simply to delaying childbearing, the author says.