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MEDI 202 - Genes To Community > Demographics > Flashcards

Demographics Flashcards

1
Q

What is the population pyramid?

A

Pyramid which is comprised of a series of horizontal bar graphs which represent different ages.

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2
Q

Where is the male population shown on the population pyramid?

A

Left of the vertical axis

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3
Q

What does the population pyramid demonstrate?

A

Demonstrates the age and sex structure of a population

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4
Q

What else does the population pyramid demonstrate?

A

Population dynamics

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5
Q

Where is the working age depicted on the population pyramid?

A

The middle, usually between 15 and 60

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6
Q

What does a large number of young population indicate?

A

High birth rate

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7
Q

What do large numbers of older population indicate?

A

High life expectancy

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8
Q

What do bulges indicate?

A

Higher fertility than normal or mass immigration event.

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9
Q

What are the categories the population is usually divided into?

A

Children, under 15
Adults, between 15 and 64
Older Adults, above 65

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10
Q

What is the dependency ratio?

A

The ratio of the dependent part of the population (children and older adults), to the productive part (adults)

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11
Q

What has happened to the 65+ ratio in developed countries?

A

It has risen

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12
Q

In which countries has the 0 to 14 ratio decreased?

A

Developed countries

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13
Q

What is Qatar’s dependency ratio?

A

Dropped from 80 to 18

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14
Q

Where us the dependency ratio 50?

A

Europe and Arab nations

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15
Q

What is the ratio like in conflict or poor regions?

A

About 80

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16
Q

What are the three pyramid models?

A

Expanding population
Stable population
Contracting population

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17
Q

What is an expanding population?

A

High crude birth rates, usually in developing countries

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18
Q

What model represents a country with crude birth and death rates?

A

Stable populations, usually in developed countries

19
Q

What is a contracting population?

A

Crude death rates exceed the birth rate, usually seen in developed countries

20
Q

What is the demographic transition?

A

Illustrates the population growth in terms of changes in both birth and mortality rates.

21
Q

How do you calculate the crude death rate?

A

(Number of deaths in a calendar year divided by the midyear population) x 1000

22
Q

How do you calculate crude birth rate?

A

(Number of births in a calendar year divided by midyear population) x 1000

23
Q

What is termed as general fertility rate?

A

When the denominator in the crude birth rate is replaced by the female adult population

24
Q

What is the total fertility rate?

A

The sum of age-specific births among adult females multiplied by 5

25
Q

What is considered an insufficient total fertility rate.

A

Less than 2000

26
Q

What is life expectancy (at birth) influenced by?

A

Infant mortality rate

27
Q

What does a high life expectancy portray?

A

Goof indicator of health and socio-economic development

28
Q

How is population growth calculated?

A

Growth rate = crude birth rate - crude death rate

29
Q

What is stage 1 of demographic transition model?

A

Extremely high birth and death rates

30
Q

What do extremely high birth and death rates indicate?

A

That there is little to no change in population

31
Q

The Black Plague, Pandemics, and Wars are all examples of what kind of demographic transition stage?

A

Stage 1

32
Q

What is the second stage of demographic transition model?

A

Early expanding, receding pandemics: high birth rates but declining death rates

33
Q

What usually causes stage 2?

A

Advances in medicine and hygiene.

34
Q

What happens in stage 2?

A

Population growth is high

35
Q

What is the third stage?

A

Late expanding and non-communicable diseases: declining birth rates and continued declining death rates

36
Q

What is stage 4?

A

Low stationary, delayed communicable diseases: low birth rates and low death rates

37
Q

What is stage 5?

A

Contracting: countries that have undergone de-industrialisation

38
Q

What happens in stage 5 and why?

A

A natural decrease in population due to birth rates falling below death rates.

39
Q

Which country is the most notable to be in stage 5?

A

Japan

40
Q

What is a threat in stage 5?

A

Re-emergence of neglected tropical diseases

41
Q

What stage is Qatar in?

A

Stage 3

42
Q

Why is dependency rate in Qatar low?

A

Anomaly created by mainly male migrant population but also female migrant population masking the shape of the expanding population

43
Q
A

MEDI 202 - Genes To Community (23 decks)

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