??? ???? ?????? ?????? Ministry of Ministers Central Bureau of Statistics SUDAN

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??? ???? ?????? ??????Ministry of
MinistersCentral Bureau of StatisticsSUDAN
The Base of a Sound Decision
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Evaluation of 1993 Census Data
Presented by
Somaia Khalid Elkhair Omer Director of Field work
Operation5th Population Census
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Population Density 1993
Sudan
Largest Country in Africa 2.5 mio km²
Population 25 mio person Average population
density 9.8 person/km² Density Khartoum
State 169 person/km² Northern State 3
person/km²

• Area of Sudan 600 mio Feddan
• Agricultural Land 200 mio Feddan
• Non- Agricultural Land 180 mio Feddan
• Forests 220 mio Feddan
• Population density 26.5 person/km²
• (respect to Agricultural Land)

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Population Census in Sudan
First census 1955/6
Second census 1973
Third census 1983
Fourth census 1993
Fifth census 2008
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Evaluation of 4th Census
1993

• Care was taken to collect information as accurate
  as possible there are expected errors in the data
  (arising from a number of sources)
• Due to resource constraints a PES could not be
  carried out
• Therefore it was proposed to examine the results
  of
• the 1993 census with regard to its coverage and
  contents by
• ? comparison with 1983 census
• ? application of various analytical techniques
  
• (testing consistency of results)

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Evaluation of Census Data
Growth Rate Sex Ratio Age Distribution
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Growth Rate

• Total Sudan GR 2.89
• North Sudan GR 3.22
• N. Sudan Settled 4.39
• N. Sudan nomads -11.4

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Evaluation of Growth Rate

• GR for Sudan as a whole is consistent with our
  expectations
• GR in Red Sea state is -0.76 for males
• 0.49 for females
• under count of nomadic population in 1993 census
  or
• over count of nomadic population in 1983 census
• Excluding the nomad GR in Red Sea is 6.5
• The GR rate for the remaining Northern states are
  acceptable

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Sex Ratio

• Sex Ratio in Sudan
• ? SR in 1955 is 102
• ? SR in 1973 is 102
• ? SR in 1983 is 104
• ? SR in 1993 is 101
• ? SR in 2008 is 103
• ? The Sex Ratio- follow a consistent pattern

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Nomadic Population

• Growth Rate for Nomad

GR Year
_ 1956
0.86 1973
14.13 1983
-11.61 1993
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Nomadic Population

• The frame for the census count of nomads was the
  list provided by the nomadic sheikhs
• The (-)ve GR observed for 1983-1993 implies
• ? the 83 figures of nomads is on the high side
• or
• ? due to under count or miss classification of
• nomadic population as settled population

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Age Distribution

• Age is often estimated
• ? by the enumerator or
• ? by the respondent themselves
• on the basis of historical events
• 1993 census indicated
• ? strong preference for certain digits ending
  0 and 5 ? lesser extend digits ending 2 and 8
• ? avoiding odd digits such as 1,3,7,9

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Age Distribution

• Measures of age heaping
• Whipples Index- Sex 1983 1993
• Males 280.0 255.7
• Females 286.3
  279.5
• Index shows that age data for Sudan should be
  regarded as very rough
• Age data for females is less accurate than for
  males

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Age Distribution

• Myers Index
• Sex MI 83 MI 93
• Males 27.9 24.4
• Females 28.8 28.0
• MI for Sudan is higher than Zambia
• India
• Libya
• which are close to 10
• (indicating greater inaccuracy in age reporting)