Figure 1From: Predicting the demand of physician workforce: an international model based on "crowd behaviors" (a) Relationship between physician density (y axis) and proportion of population under age 15 years (x axis). The regression line equation is: PD = (8.179 - 0.159 × PropPop)2. (b) Relationship between physician density (y axis) and life expectancy (x axis). The regression line equation is: PD = (-5.577 + 0.138 × LifeExp)2.Back to article page