Review of Literature Societal changes, globally, have led individuals to marry later in life, resulting in an increase in the number of pregnancies to women 35 years of age and older. This phenomenon has been noted especially in the United States of America (USA), Australia, Canada, Taiwan, and Thailand.2, 13-16 In the USA, the number of older primigravidas increased 36% between 1991 and 2001,3 while one in four pregnancies in the United Kingdom (UK) occurred in women 35 to 39 years of age