Lesseon 1

Question 1

What is the rule of point prevalence?

Answer 1

Number of cases in a defined population at one point in time devided by number of persons in a defined population at the same point in time

Question 2

What is the rule of period prevalence?

Answer 2

Number of new and preexisting cases over specified period deviated by total population in the specified period

Question 3

Exercise (period)

Answer 3

In a survey of 1,150 women who gave birth in maine in 2000 , a total 468 reported taking a multivitamin at least 4 times a week during the month before becoming pregnant. Calculate the prevalence of frequent multivitamin use in this group
Answer:
Numerator = 468
Denominator = 1,150
Prevalence = (468/1,150)100 =0.407100=40.7%

Question 4

What is the rule of Cumulative incidence?

Answer 4

Number of new cases of disease (outcome) devided by number of people in source population at risk in the start of the study

And when we say at risk we mean that the people that were exposed to the exposure

Question 5

What is the rule of incidence rate ?

Answer 5

Number of new cases of disease in a given time period devided by total number of persons-time at risk during the study

When we say Persons-time at risk we mean by that the time from the beginning of their observation until one of three tings occurs
1-development the outcome of intrest
2-the individual becomes lost follow up or dies
3-the study end

Question 6

You want example about cumulative incidence?

Answer 6

Me too, now fuck off and open the picture you will find it in the favorite one

Question 7

You think we are done with questions?

Answer 7

HAHAHAHAHAH, now again fuck off to the favorite picture.

Question 8

Flip the card. Just do it

Answer 8

Another question dumbass

Question 9

Rule of Odd of disease

Answer 9

Number of new cases of disease arising in a defined populations over a given periods of time devided by ,number of people in that population who remain disease — free during that periods.

Question 10

Rule of risk?

Answer 10

Number of new casew of disease arising in defined population over a given period of time devided by number of disease free people in that population at the beginning of that time period

Question 11

A secondary attack rate rule

Answer 11

Number of cases among contacts of primary cases devided by total number of contacts multiplied by one hundred percent

Question 12

What is the rule of sensitivity?

Answer 12

True positive devided by true positive plus false negative

Question 13

What is the rule of specificity?

Answer 13

True negative devided by true negative plus false positive

Question 14

Check the example of teen smoking in page number 2 or 3

Answer 14

If its hard do it hard and if it easy do it easy just get it done

Question 15

What is the rule of Predictive value positive?

Answer 15

True positive devided by true positive plus false positive

Question 16

what is the rule of Predictive value negative?

Answer 16

True negative devided by true negative plus false negative

Question 17

Go check the example in page 4 or 3

Answer 17

You the only one that can do it and you the only one that can fuck it up

Question 18

What is the rule of true prevalence and what letter we express it?

Answer 18

The rule is true positive plus false negative devided by the total number of the whole group, and we express it with the letter P

Question 19

What is the rule of the apparent prevalence and with what letter we express it?

Answer 19

The rule is true positive plus false positive devided by the total number, and we express it with the letter P* ( with the multiply or the star sign)

Question 20

احفظ الجدول اللي في اخر صفحه

Answer 20

We are not done yet