 According to the study of John Allen, for the most part, Opus Dei faithful belong to the middle to low levels in society, in terms of education, income, and social status.Opus Dei is made up of several different types of faithful.According to the Statutes of Opus Dei, the distinction derives from the degree to which they make themselves available for the official activities of the Prelature and for giving formation according to the spirit of Opus Dei.