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  Indian J Med Microbiol
 

Figure 2: Pearson correlation between HPD and AOP index in 70 nulliparous women in active stage of labor. AOP more than 120° and HPD less than 40 mm are significant indicators in this cases. AOP, angel of progression; HPD, head progression distance.

Figure 2: Pearson correlation between HPD and AOP index in 70 nulliparous women in active stage of labor. AOP more than 120° and HPD less than 40 mm are significant indicators in this cases. AOP, angel of progression; HPD, head progression distance.