You must submit your correlations or covariances into a com-. puter program to extract your factors. This step is too complex to reasonably be done by hand. There. are a number of diï¬erent extraction methods, including maximum likelihood, principal component, and principal axis extraction. The best method is generally maximum likelihood extraction, unless you. seriously lack multivariate normality in your measures.
However the incidence of malignancy (invasive or in situ) as a cause of PND varies between 1 and 23% depending upon the series studied [3]. A solitary papilloma is not thought to be a pre-malignant lesion [5] and is considered by some to be an aberration rather than a true disease process [6].
The culprit is a strain of virus called human papillomavirus or HPV. Many strains of the virus exist, and those that cause common warts on the hands and feet are not the same strains of HPV that cause genital warts. Some people mistakenly think plantar warts or palmer warts are malignant. In fact, they are not harmful.Eventually, in about two years, most warts go away without treatment.ometimes plantar warts can grow in clusters; those are called mosaic warts. Sometimes corns or calluses are mistaken for a palmer or plantar wart. In some warts, little black dots appear, leading people to call them seed warts. Actually the black dots are little blood vessels that have grown up into the wart.