United State Medical Licensing Examination (Step 3) Set 11

You have decided to survey the population to establish a health risk profile for the population. Due to budget constraints, you must gather data using a stratified random sample. This approach is correctly described as which of the following?

You are examining the relationship between hypertension and myocardial infarction (MI) in your community. In order to do so, you send a questionnaire to the whole population in your community (1000 persons). All 1000 persons responded. The results obtained from that questionnaire are presented below in table. What is the reported prevalence of hypertension in the population per 1000?

You are examining the relationship between hypertension and myocardial infarction (MI) in your community. In order to do so, you send a questionnaire to the whole population in your community (1000 persons). All 1000 persons responded. The results obtained from that questionnaire are presented below in table. What is the prevalence of MI per 1000 hypertensive persons in the total population?

You are examining the relationship between hypertension and myocardial infarction (MI) in your community. In order to do so, you send a questionnaire to the whole population in your community (1000 persons). All 1000 persons responded. The results obtained from that questionnaire are presented below in table. What is the prevalence of MI per 1000 persons in the community?

You are examining the relationship between hypertension and myocardial infarction (MI) in your community. In order to do so, you send a questionnaire to the whole population in your community (1000 persons). All 1000 persons responded. The results obtained from that questionnaire are presented below in table. You randomly select a sample of 100 questionnaires in order to determine how representative your results would have been compared to the whole population if you had originally only sampled 100 individuals from your community. The results obtained are shown below in table. Which of the following statistical tests could best be used to determine whether there is a significant increase in the history of MI among those persons who have hypertension in comparison with those without hypertension?

You are examining the relationship between hypertension and myocardial infarction (MI) in your community. In order to do so, you send a questionnaire to the whole population in your community (1000 persons). All 1000 persons responded. The results obtained from that questionnaire are presented below in table. If we compare the population sample examined with the whole population that responded to the questionnaire, which of the following statements accurately describes the available information?

A 45-year-old male living in a homeless shelter is exposed to TB from a fellow resident. He is found to have a 15 mm of induration on the Mantoux skin test. Which of the following risk factors will increase the man's likelihood of developing active TB subsequent to his infection?

The causative organism of cholera, Vibrio cholerae, was first isolated by Koch in 1883. There have been seven pandemics of cholera, with the most recent subsiding only in the 1980s. With humans as the usual reservoir, the organism spreads as man travels. Which of the following is the most likely mode of spread?

A 4-year-old child presents to his pediatrician with a complaint of a mild rash and fevers. His travel history is positive for a camping trip 2 weeks prior. The parents do not recall a tick bite on the child and do not remember if there were ticks in the area. No other members of the family complain of similar symptoms and the child does not attend day care. Physical examination is positive for a temperature of 100.9

For which of the following circumstances would you consider initiating chelation, such as with CaEDTA, to treat workers for workplace exposure to lead and other heavy metals?