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Table 2 Relationship between direct costs and GDP, adjusted model

From: Costs of multimorbidity: a systematic review and meta-analyses

Predictor Estimate Standard error
Intercept −4.86* 1.26
Log10 GDP 1.91* 0.27
Random effects Variance  
Study 0.02029  
Data source 0.02365  
Residual 0.00684  
AIC −31.87  
R-squared adjusted 0.94  
N 41  
  1. Legend: We ran a linear mixed model with various study characteristics as random effects to assess the relationship between direct costs of multimorbidity and country GDP. *p < 0.001