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Table 2 Bivariate correlations between patients currently on ART in December 2006 and demographic, treatment services and spatial variables

From: Utilization of antiretroviral treatment in Ethiopia between February and December 2006: spatial, temporal, and demographic patterns

   Pearson correlation P
Population of towns providing ART    
Mean 58150.4 0.985 <0.001
No. 133   
S.D. * 258455   
Urban population per zone    
Mean 252423 0.977 <0.001
No. 47   
S.D. 434850   
Total population per zone    
Mean 1477574   
No. 47 0.374 0.014
S.D. 969778   
No. of hospitals per zone    
Mean 2.1   
No. 47 0.948 <0.001
S.D. 3.2   
No. of hospitals and health centers per zone    
Mean 4.1   
No. 47 0.945 <0.001
S.D. 6.6   
Distance from health center to ART hospital **    
Mean 59.8   
No. 44 0.219 0.153
S.D. 33.6   
Duration of ART services in 2006 **    
Mean 6.2   
No. 192 0.476 <0.001
S.D. 3.7   
  1. * – standard deviation
  2. ** – in km
  3. # – in months