Are there fewer conjoined twins today than in the past?

The incidence of conjoined twins has remained relatively stable over time, occurring in about 1 in every 200,000 live births. Advances in medical technology and prenatal care may lead to improved outcomes for conjoined twins, but they do not significantly reduce the occurrence rate. Factors such as maternal age and genetic predispositions can influence the likelihood of conjoining, but overall, the prevalence has not shown a marked decrease.