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Table 5 The top 20 priority countries in terms of spatially referenced population data needs

From: The effects of spatial population dataset choice on estimates of population at risk of disease

Rank

Country

PPU

Population data year

1

Iraq

1,258,000

1985

2

Congo, Democratic Republic of the

347,000

1984

3

Chad

527,000

1990

4

Syria

1,241,000

1994

5

Libya

223,000

1984

6

Cameroon

255,000

1987

7

Sudan

358,000

1993

8

Papua New Guinea

241,000

1990

9

United Arab Emirates

399,000

1995

10

Nigeria

231,000

1991

11

Togo

216,000

1991

12

Pakistan

1,309,000

1998

13

Egypt

281,000

1996

14

Iran

260,000

1996

15

Bhutan

110,000

1985

16

Algeria

634,000

1998

17

Guinea

257,000

1996

18

Uzbekistan

118,000

1989

19

Eritrea

94,000

1984

20

Senegal

107,000

1985

  1. The ranks are based on ranking all country data in the GPW/GRUMP database (http://sedac.ciesin.columbia.edu/gpw/spreadsheets/GPW3_GRUMP_SummaryInformation_Oct05prod.xls) by population per unit (PPU) and date of the input population count data, then summing these to create a simple combined rank score. Additional file 1, Table S4 shows the top 50 countries.