Could someone please comment about the significance of the score variance for subject topics on the nbme forms? Even though my scores for nbme 4 and uwsa1 came very close to one another their variance for each individual disciplines certainly did not. As such, each revealed different weak subject areas I needed to work on. Also, which nbme form tests cardio, gi or pharm more heavily than others, as these are my weakest areas (I am assuming the more questions the more statistically significant the variance and representative the score of actual performance)?