Table 2

Population proportion within each isoarea for GRD, RW and FW

Time to Tertiary Care

Within 90 minutes

Within 120 minutes

Within 180 minutes

Ground

0.696

0.801

0.894

Rotary Wing

0.661

0.782

0.909

Fixed Wing

0

0

0.872

Patel et al. International Journal of Health Geographics 2007 6:47   doi:10.1186/1476-072X-6-47