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Table 1 Detailed information on indicators in sub-Saharan Africa and in China

From: Andersen’s utilization model for cataract surgical rate and empirical evidence from economically-developing areas

Region Variable Mean Std. Error Std. Deviation Bootstrap a
Std. Error 95% Confidence Interval
Lower Upper
Sub-Saharan Africa CSR 594.74 95.89 417.96 98.45 439.47 820.99
GDP/P 1107.50 320.20 1395.72 318.90 645.85 1891.74
Cataract surgeons per million 2.84 0.39 1.72 0.40 2.13 3.72
General Doctors per 1000 0.11 0.02 0.10 0.02 0.07 0.16
Ageing Proportion 2.93 0.07 0.31 0.07 2.81 3.08
Male Proportion 49.67 0.14 0.62 0.14 49.40 49.92
Income per capita 871.82 256.42 1117.72 255.55 504.19 1488.24
China CSR 1125.42 121.64 677.25 121.73 894.17 1400.21
GDP/P b 8264.30 645.89 3596.18 624.73 7042.04 9537.51
General Doctors per 1000 2.15 0.07 0.40 0.07 2.03 2.30
Ageing Proportion 8.51 0.27 1.51 0.26 8.01 9.04
Male Proportion 51.37 0.12 0.66 0.11 51.15 51.60
Annual Consumption# 2857.40 232.03 1291.88 224.42 2435.56 3353.69
Social Insurance scale# 162.90 19.24 107.15 19.14 129.32 207.11
  1. a: 95% CI were based on 1000 bootstrap samples
  2. b: converted into US dollars according to RMB: US dollars = 6.14: 1