… The number of twins has doubled and the rate of twin births has risen by more than three-fourths
over the three decades 1980-2009. Increases in twin birth rates averaged more than 2 …

… Therefore, although it is not feasible to summarize the voluminous literature on this topic,
this review article will focus on: twin birth rate, common antenatal problems, and preterm births, …

… births also depends on fertility treatments, which are largely used in the developed countries.
National data from the civil birth … The proportion of twin births has varied during the last …

… Thus our sample of unwed twins-first births is roughly four times larger in 1980 than in
1970. … in locating twin births, we compare characteristics of our sample with twin-birth charac…

… track twin birth rates as twins are at greater risk than singletons for poor outcomes, including
preterm birth and neonatal morbidity and mortality (1,3,4). This report presents trends in twin …

… Cesarean delivery rates for twin births increased steadily from 53.4% to 75.0% in 2008.
Rates rose for the breech twin category (81.5%–92.1%) and the vertex twin category (45.1%–…

… twin material for research on the heredity of twin births as well. While collecting data on twins,
the investigator can with comparatively ease find starting-points for research on twin births. …

… to compare birth outcomes in MC and DC twins with … twin on the outcome in MC and DC
twins. Finally, we compared the outcome of the second-born twin with that of the first-born twin. …

… , compared with one in every 29 births in 20143,4. The largest increase in the twin birth rate
was seen in women aged 45 years and over, with a rise from 15 twin pregnancies per 1,000 …

… Among women who have already given birth to twins the risk for further twin births is …
number of twin births among female relatives of women who had given birth to dizygotic twins.1 …