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Table 5 Regression coefficients and 95% confidence interval: natural log of cost per outpatient visit expressed in 2007 I $

From: Econometric estimation of WHO-CHOICE country-specific costs for inpatient and outpatient health service delivery

  Coefficient 95% confidence interval
Ln GDP per capita 0.865*** [0.826, 0.905]
Ln visits − 0.0142* [− 0.0272, − 0.00119]
Ln visits per provider − 0.0412*** [− 0.0578, − 0.0246]
Urban 0.352*** [0.268, 0.435]
Public − 0.290*** [− 0.330, − 0.249]
Private 0.0532* [0.00479, 0.102]
Level 2 0.208*** [0.144, 0.271]
Level 3 0.304*** [0.213, 0.395]
Level 4 0.348*** [0.279, 0.417]
Colombia 0.628*** [0.542, 0.713]
Brazil − 1.563*** [− 1.656, − 1.470]
Brazil level 3 − 0.245*** [− 0.337, − 0.153]
Constant − 4.534*** [− 4.797, − 4.271]
Observations 9028  
R 2 0.658  
Adjusted R2 0.658  
F_stat 1635.7  
Duan’s correction factor 1.271  
Variance inflation factor 3.209  
  1. * p < 0.05, ** p < 0.01, *** p < 0.001