1. You are a clinical epidemiologist. You tracked the health of 1,000 college students who ate at the Residence Dining Hall all 4 years from their freshman year through graduation in 2008 . You accurately found that 200 of the RDH diners developed metabolic syndrome while 20 were misdiagnosed as having metabolic syndrome when they really did not. Another 20 were misdiagnosed as not having it. The rest were correctly determined not to have it.

You repeated your study with another 1,000 college students at the same university in 2018. You accurately found that 400 of the RDH diners developed metabolic syndrome while 40 were misdiagnosed as having metabolic syndrome when they did not. Another 40 were misdiagnosed as not having it. The rest were correctly determined not to have it.

From the scenario above, what was the sensitivity of the test 2008?

Group of answer choices

3%

91%

97%

9%

2. You have developed a new saliva test to screen for the flu up to two days before symptoms begin. You test your product on 500 college students in the month of January. Your results indicate that 170 of your subjects tested positive on your test and also developed the flu. In 70 of your subjects, the flu was identified by your test but the subjects did not actually have the flu. A count of 60 participants developed the flu but your test did not detect it. The rest of the subjects did not have the flu and the test did not indicate that they had it.

From the scenario above, how many false positives did your test record?

Group of answer choices

500

60

170

70

3. You have developed a new saliva test to screen for the flu up to two days before symptoms begin. You test your product on 500 college students in the month of January. Your results indicate that 170 of your subjects tested positive on your test and also developed the flu. In 70 of your subjects, the flu was identified by your test but the subjects did not actually have the flu. A count of 60 participants developed the flu but your test did not detect it. The rest of the subjects did not have the flu and the test did not indicate that they had it.

From the scenario above, how many true negatives did your test record?

Group of answer choices

70

170

60

200