1-Population Dynamics

1-Population Dynamics - Data from: Population Reference...

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Data from: Population Reference Bureau. 2007 World Population Data Sheet. Available at http://www.prb.org/Publications/Datasheets/200
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Mortality is the condition of being mortal, or susceptible to death Mortality rate, measure of the number of deaths in a given population or country or geographical location Morbidity (from Latin morbidus : sick, unhealthy) refers to a diseased state, disability, or poor health due to any cause or condition. Comorbidity is the coexistence of two medical conditions, such as a person suffering from anemia and cancer Prevalence : total # of cases of the disease in the population at a given time Incidence : total # of some new cases of a disease within a specified period of time Basic Vocabulary
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Population Clock, 2010
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Most Populous Countries
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U.S. Population Growth Current population – 310 million Increase in population rate in 2050 depends on future immigration trends 3 different population projections Immigration, just under 1 million/year) –399 million Medium immigration (1.1 - 1.8 million/year) – 423 million High immigration (1.5 – 2.4 million/year) – 458 million
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Population Estimates World population— 6,892,000,000 (rounded) Population percentages Most populous country—China ( 1,338,000,000 ) China has (1,338,000,000/6,892,000,000) x (100) = 19.4% of the world’s people India is next ( 1,189,000,000 ) India has (1,189,00,000/6,692,000,000) x (100) = 17.8% of the world’s people China and India contain ≈37% ( 19.4% + 17.8% ) of the world’s people
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What factors affect Population and world hunger ?
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Total Fertility Rate (TFR) TFR worldwide is 2.5 TFRs range from 1.7 in more developed countries to 4.5 in the least developed countries TFR decline dependent on family planning or limiting childbearing Government policies needed to provide family planning services where needed
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Fall in Total Fertility Rates –  Varied  Among Countries
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Natural Increase (%) This parameter helps project future population. Natural increase (%) = [birth rate/1000 – death rate/1000] x [100] The world has a natural increase of about 1.2% More developed countries— 0.1% Less developed countries— 1.5%
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Population Doubling Time Number of years for a population to double in size, assuming rate of population growth unchanged Doubling time = 70/ Natural Increase (%) World = 70/1.2 = 58.3 In a century, the world will have approximately 2 doublings 2 doublings = 2 2 = 4 times as many people
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Mortality Rate Infant mortality rate—number of deaths to infants (children under 1 year of age) per 1,000 live births Worldwide, 52 out of 1000 (5.2%) babies do not survive the first year Many countries have rates well over 100 infant deaths per 1000 live births There is a large difference in infant mortality rates between more developed and less developed continents
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This note was uploaded on 03/21/2011 for the course PERS 2002 taught by Professor Roman during the Spring '07 term at Georgia State.

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1-Population Dynamics - Data from: Population Reference...

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