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Chapter: 31 / Q: 21
In study carried out in the hospital ward, every 10th admitted patient was included in the sample, which sampling procedure is this:
Chapter: 31 / Q: 22
The smoking history of pregnant women is taken in the antenatal period and correlated with the birth weight at the time of delivery. To find an association between them would be an example of:
Chapter: 31 / Q: 23
In a bulk of hundred children out of whom 28 are immunized 2 of them get measles simultaneously. Subsequently14 get measles. Assuming the efficacy of the vaccine to be 100%, what is the secondary attack rate?
Chapter: 31 / Q: 24
A public health physician wants to study the load of hypertension in Rawalpindi district to establish special screening & treatment services in the mentioned are Which design is more useful for this?
Chapter: 31 / Q: 25
To give the relevant importance to hypertension control in a health service a researcher wants to study the prevalence of hypertension. He chose a cohort study. The design to assess prevalence is?
Chapter: 31 / Q: 26
A researcher wants to study natural history of silicosis in a population of industrial workers. Which design is most useful?
Chapter: 31 / Q: 27
While investigating a point source epidemic it was found that 120 students ate five different foods (meat burgers, fried fish, steak, rice and fruit sala. The relative risk was calculated for all those five foods. It was concluded that fish was not responsible for this epidemi The relative risk f
Chapter: 31 / Q: 28
Among 10 women with cervical cancer, medical records confirm a past history of herpes simplex type II infection in eight. What is the relative risk of developing cervical cancer in women with a history of HSV type II infection?
Chapter: 31 / Q: 29
What is the incidence of new cases per 1000 person years in households that had a culture positive case during the first survey?
Chapter: 31 / Q: 30
What is the incidence of new cases per 1000 person years in households that did not have a culture positive case during the first survey?
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