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In year 1999, 4,458 women were screened for cervical cancer and 72 were found to encompass CIN 3 phase or above (that is, diagnostic of carcinoma of the cervix or carcinoma-in-situ). The women who didn’t have cervical cancer were re-screened in the year 2004 and the other 40 cases were diagnosed.

Q1. Illustrate the prevalence of cervical cancer in the year 1999 and 2004?

Q2. How many women were at risk of developing the cervical cancer before being screened in:

a) 1999
b) 2004

Q3. Determine the incidence of cervical cancer in these women? Is this a measure of the cumulative incidence or the incidence rate?

Suppose that, on average, each of 30 women who were diagnosed with cervical carcinoma did so half-way via throughout the five-year period.

Q4. Compute the total number of person-years at risk of developing cervical cancer throughout the five years.

Q5. Illustrate the incidence rate of cervical cancer in these women?

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