The nurse asks a young female patient if she is sexually active. The patient asks the nurse why she needs to know. The nurse’s best response is

The Iowa Women’s Health Study, in which researchers enrolled 41,837 women in 1986 and collected exposure and lifestyle information to assess the relationship between these factors and subsequent occurrence of cancer, is an example of which specific type of study?

Which lab result would the nurse expect in the client diagnosed with DIC?

In the evaluation of screening, the positive predictive value will vary according to:

Many of the students at the boarding school, including 6 just coming down with varicella, went home during the Thanksgiving break. About 2 weeks later, 4 siblings of these 6 students (out of a total of 10 siblings) developed varicella. The secondary attack rate among siblings was, therefore,:

Use the following information for Questions 27–29. Within 10 days after attending a June wedding, an outbreak of cyclosporiasis occurred among attendees. Of the 83 guests and wedding party members, 79 were interviewed; 54 of the 79 met the case definition. The following two-by-two table shows consumption of wedding cake (that had raspberry filling) and illness status.

In a state that did not require varicella (chickenpox) vaccination, a boarding school experienced a prolonged outbreak of varicella among its students that began in September and continued through December. To calculate the probabilityor risk of illness among the students, which denominator would you use?

What is the prevalence of disease during July?

John Snow’s investigation of cholera in 1854 London is considered a model for epidemiologic field investigations because it included a number of key aspects that informs much of modern epidemiology. The one aspect which was NOT RELEVANT in his investigations at that time was:

In a screening test, Positive predictive value is: