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].
Human Papillomavirus (HPV) What is HPV. Human Papillomavirus, commonly referred to as HPV, is a vast group of viruses potentially leading to warts, genital warts and, in worst cases, cancer. However, most HPV types do not result in any harmful effect on human body, go away in several months and remain unnoticed.