However, this is offset by the infrequency of covered conditions, and misinterpretation. With the relative infrequency of male breast cancer, randomized studies are lacking. In addition to scales measuring the five factors, it contains an "infrequency" validity scale. Despite their infrequency, rare events wield significant influence in many systems. Diagnosis of epiploic appendagitis can be challenging due to its infrequency. The true biological potential of PAMT remains unknown due to its infrequency. The criteria were observing speed limits, accident infrequency, and seat-belt use. The worst part was the infrequency of pay or not being paid at all.