1990-2009: A Graph Analysis

The population in the United States has more than tripled in the last century from 76 million in 1900 to 281 million in 2000 (Hobbs & Stoops, 2002). This can be contributed to several trends in population demographics. The most obvious reason is that there are more births than deaths in the U.S (Williams & Torrens, 2008). Also, the average American is getting older due to increased longevity. In simple terms, people are living longer. One reason is medical advances have increased in recent years coupled with the fact that Americans are taking their health more serious. The population of age 65 and older has increase from 3.1 million in 1900 to 35 million in 2000, with the 85 and older population increasing from 122,000 to 4.2 million (Hobbs

In 1950, were approximately 3.5 million births with women having an average of 3.8 children (“Measuring childbearing patterns in the United States 2010”.) As of the 2010 women on average have 1.9 children. This

I consider the data collected and analysis performed in this research project quite reliable.The only way I could consider age influencing the maternity length of a mother and the newboern's birth weigh would be in the case of a young gal whom's internal organs have not been entirely develop resulting in a premature baby with a lower birth weight than most average newborns. Although the ncbirths data was collected over a decade ago I do not consider it to be unreable at all for the variables of age, weeks and

In 1996 the largest population consisted of people aged 30-50, there were not as many people in the dependency load. In 2011, there were more people aged 40-65, who are getting close to retirement. There are not as many babies being born today as previous years because people are choosing to not have as many children. The baby boomers are getting older and there will soon be more people in the dependency load as the workforce. In 2011 there were more people ages 85 and up because nowadays people have been able to live longer.

The end of world-war II marked the beginning of a new era in this country. The baby boom era began in 1946 and ended in 1964. During this era, 76 million babies were born according to pew research center. The number of people reaching adulthood in the next decade was tremendous. As a result, the country had to adjust to meet the demands and fulfill its obligations to the citizens. Though, the boomers were sophisticated and wanted to impose their views on the rest of the society. Eventually, the country started to experience some changes and the boomers’ influence was propagating in the society. Cheryl Russell, the Editor-in-Chief of America Demographics Magazine and the author of “100 Predications for the Baby Boom: The next 50 years.” In his

After the war came the post war “Baby Boom.” According to the U.S. Census Bureau, the birth rate increased dramatically from 2.49 to 3.77 between 1945 and 1957. The number of children ages 0-4 went from 11,000,000 to 16,410,000 and continued into the sixties were it peaked 20,000,000. The number of children under the age of nineteen rose from 51 million to 69 million. Nevertheless, the number of adults age ranging from 20-64, had also increased,

The term “Baby Boomers” describes the enormous amount of babies in America born from 1946 to 1964. This generation of newborns began shortly after the conclusion of World War II. Most people believe this generation spurred from the Great Depression and World War II. During the Great Depression, people were discouraged from childbirth because of the inability to provide for another person in a time when unemployment was at its highest. In the case of WWII, many families would set aside their plans of childbirth until after the war. As happy men returned from the battlefield and went home to their eager wives, babies were made. As a result, there were 3.4 million babies born in 1946 (Boomer Statistics). The peak number of childbirths in a year came in 1957 with 4.3 million (Boomer Statistics). By the end of this baby boom era, there were

The fit of Model~II shows that both the linear and squared effects of the maternal age at first birth are significant, which indicates that initially the risk of next birth increases as the mother's age at first birth increases and after a certain age at first birth, this risk starts decreasing. The estimated age at the first birth corresponding to the maximum risk of the next birth are 17.58, 17.83, and 18.08 years for 2004, 2007, and 2011, respectively. Parity is found to be significant and the risk of the next birth decreases as parity increases.

A CDC report indicates that childless American women who bear children at age 40 – 44 have higher mean number of births at 2.1 compared to 1.3 for women age 15 to 44 years.

Decline in women in 2000 started when they were 35 years old and males when they were 45 years old. This 10 year difference could mean those women’s stress increases when they are 35 years old, because their children are in school and more responsibility is put on the mother, because society deems women as the ones that should nurture and help their children intellectually grow. In 2000 males and females both started to decline in population when they reached the age cohort 45 to 49, and in 2010 it was the 50 to 54 age cohort. This could have stemmed from the healthier life styles that are portrayed by

Over the years, there have been major shifts within the United States in regards to its population. Statisticians have estimated that 20% of the population will be 65 years of age and older. There is an even

Within the United States, the size of the population over age 65 has soared during this century, increasing from 3

Rates above two children indicate populations are growing in size and the median age is declining. Higher rates may also indicate difficulties for families, in some situations, to feed and educate their children and for women to enter the labor force. Rates below two children indicate populations are decreasing in size and growing older. Global fertility rates are in general declining and this trend is mostly predominant in industrialized countries, especially Western Europe, where populations are projected to decline dramatically over the next 50 years.

As countries become wealthier and make medical advancements, decline in fertility and mortality rates follow. This demographic transition—usually coupled by industrialization and economic development—is divided into four different stages. The first stage is categorized by equally high birth and death rates, producing a relatively young population. Growth is limited by drought, disease, and food supply, rather than by family planning. In the second stage, food availability and public health improves. With fewer famines coupled with better sanitation, starvation and disease become less common, reducing the death rate. As fertility rates have not changed, the population grows. Developing nations are generally found within these first two phases while developed nations fall into the later stages. In combination with availability of contraception, stage three introduces family planning and female empowerment to the equation. Increased female education, employment opportunities for women, urbanization, and rising wages results in women baring fewer children. As such, stage three sees a decline in population growth, rectifying the imbalance from the previous stage. In the last phase, stage four, birth and death rates begin to dip below the level of replacement, leading to aging populations without enough people of working age to support the elderly. Examples of these graying populations include Germany and Japan.

Women’s fertility has dropped rapidly and life expectancy has increasing to new level. Fertility and mortality have led to very young populations in high fertility countries in developing world and increasingly older populations in the reach or developed world in past trends. Contemporary societies are now at very different stages of their demographic transitions. Therefore, in my understanding this discussion topic key trend in population size, fertility and mortality, and age structures in general during these transitions. We have seen from the history that after centuries of very slow growth, the global population reached one billion in 1800. In addition, the modern expansion of human numbers started then, increasing at low at a slow percentage but more steadily pace next 150 years became to 2.5 billion in 1950. During the second half of the twentieth century, however, this growth rate dramatically