Table 2 Summary coverage statistics for sub-Saharan Africa.

From: Differences between gridded population data impact measures of geographic access to healthcare in sub-Saharan Africa

 

Total population

30 min

60 min

90 min

120 min

150 min

180 min

nr. covered

% covered

nr. covered

% covered

nr. covered

% covered

nr. covered

% covered

nr. covered

% covered

nr. covered

% covered

HRSL

837,427,969

738,362,867

88.2

789,665,384

94.3

808,260,473

96.5

817,316,977

97.6

822,468,235

98.2

825,661,368

98.6

GHS-POP

1,007,629,498

879,872,628

87.3

926,126,071

91.9

946,476,919

93.9

958,041,182

95.1

964,843,199

95.8

969,695,172

96.2

GPWv4

1,142,381,994

691,184,991

60.5

864,838,798

75.7

945,653,297

82.8

991,147,422

86.8

1,019,755,993

89.3

1,039,511,968

91.0

LandScan

1,114,787,854

900,416,765

80.8

998,239,544

89.5

1,035,462,222

92.9

1,054,119,811

94.6

1,064,963,010

95.5

1,071,921,785

96.2

WorldPop constrained

1,135,848,278

916,456,304

80.7

1,015,980,775

89.4

1,057,068,975

93.1

1,078,609,302

95.0

1,091,225,178

96.1

1,099,582,164

96.8

WorldPop unconstrained

1,135,121,848

808,494,660

71.2

951,961,369

83.9

1,011,228,872

89.1

1,042,316,719

91.8

1,060,764,621

93.4

1,072,860,699

94.5

  1. Absolute and relative accessibility coverage as visually presented in Fig. 1 for the six different gridded population data sets: HRSL, GHS-POP, GPWv4, LandScan, WorldPop top–down constrained, WorldPop top–down unconstrained. Total population is lower for HRSL because Ethiopia, Somalia, Sudan, and South Sudan are not included in the dataset released in 2018.