Correction - In Population attributable risk - Denominator is Incidence among Total population.. Calculations were correct. In explanation it was wrongly mentioned as Incidence among exposed..
Yes. You need to consider for calculation like that, (incidence of exposed and unexposed) if incidence among total population was not provided separately, in question.
Such an amazing presentation and wonderful explanation. Very Very easy to understand and remember. This video is really a life savior at the last moment. Thank you very much sir for your help and efforts....!! 😊😊
Population attributable risk numerator is incidence in total population -incidence in non exposed/incidence in total population In the example Then it is 73-3/73*100 Ideally it shld be..u have written 6.3/7.3????
That's a good question mam.. We should substitute the actual incidence among the population and non exposed not there incident number of cases. so the actual incidence among population is 7.3 and incidence among non exposed is 1. so we should substitute 7.3 and 1 for that. we should not substitute to the actual number of cases. and also whenever the total population incidence is not given, we need to combine the expose and non exposed as population incidence to arrive at the 7.3 for calculation purpose.
Horrocks apparatus is a British instrument, where Gallon (455Litres) measurement is common. This instrument calculation is based on Gallon. Fourth cup shows blue colour means 8grams of bleaching powder to disinfect the water.. second cup means 4 g, third cup means 6 g and so on..
In Annual falciparum Incidence answer should come 15 cases /1000 population/year and not 1.5 cases calculation is 600/40000 *1000 please correct me if i am wrong
Teaching is beautiful, very helpful for understanding. Almost all topics are covered and example problems are standard level. Thank you for this video.
Yes.. Maternal mortality ratio is maternal deaths/ live births.. Maternal mortality rate is maternal deaths/deaths in reproductive age group women.. The confusion continues as both are called MMR.
When you are dealing with census population (March 1) and mid year population (July 1) the difference is 4 months. Four months out of a year will make 4/12 of a year.. so to meet the difference, we multiply by 4/12.
Please check whether these answers are correct.. Case Control Study - Answers: Exposure Rates among OCP users = 60/300*100 = 20%. Exposure Rates among non OCP users = 60/600 *100 = 10%. Odds ratio = ad/bc = 2.2. The Mark obtained by 10 individuals in a subject are as follows: 27,28,40,32,30,36,25,29,30,29. Calculate Mean deviation, Standard deviation, Standard error and Confidence Interval. Answers Mean = sum of the observations/ Total number of observations = 306/10 = 30.6 Mean deviation = Σ(𝑥−𝜇) 𝜂 = 32.4 /10 = 3.24 Standard deviation = √ Σ(𝑥−𝜇) 2 𝜂 = √ 176.4 9 = 4.427 Standard error = 𝑆 √𝜂 = 4.427/ 3.16 = 1.4 Confidence Interval = 𝜇 ± 2 𝑆𝐸 = 30.6 ±2.8 = 27.8 - 33.4
Exposure rate among diseased is a/(a+c) Exposure rate among non diseased is b/(b+c) Exposure Rates among OCP users = 60/300*100 = 20%. Exposure Rates among non OCP users = 60/600 *100 = 10%. Odds ratio derivation of formula is a is very small in a+c.. so we can consider it as c.. likewise b in b+d is small. So it will be d. So the formula will become ad/bc.. Odds ratio = ad/bc = 2.2.
Correction - In Population attributable risk - Denominator is Incidence among Total population..
Calculations were correct. In explanation it was wrongly mentioned as Incidence among exposed..
Sir ,total means incidence among exposed +incidence among non exposed???
Yes. You need to consider for calculation like that, (incidence of exposed and unexposed) if incidence among total population was not provided separately, in question.
Tq sir❤
Such an amazing presentation and wonderful explanation. Very Very easy to understand and remember. This video is really a life savior at the last moment. Thank you very much sir for your help and efforts....!! 😊😊
Thanks a lot for your appreciation..🙏 all the best..👍
Population attributable risk numerator is incidence in total population -incidence in non exposed/incidence in total population
In the example
Then it is 73-3/73*100
Ideally it shld be..u have written 6.3/7.3????
That's a good question mam..
We should substitute the actual incidence among the population and non exposed not there incident number of cases. so the actual incidence among population is 7.3 and incidence among non exposed is 1. so we should substitute 7.3 and 1 for that. we should not substitute to the actual number of cases. and also whenever the total population incidence is not given, we need to combine the expose and non exposed as population incidence to arrive at the 7.3 for calculation purpose.
Best
Sir, in chlorination,why we divide by 455 and how 8grams of bleaching powder required is found
Horrocks apparatus is a British instrument, where Gallon (455Litres) measurement is common. This instrument calculation is based on Gallon. Fourth cup shows blue colour means 8grams of bleaching powder to disinfect the water.. second cup means 4 g, third cup means 6 g and so on..
@@SPMResearchwithDrRockBritto sir why there used circle formula, how to find where to use which formula
Most commonly wells are cylinderical. Volume formula is (22/7)*r^2*h.
If cubical, length*breadth*height.
Conical very rare, 1/3{(22/7)*r^2*h}
@@SPMResearchwithDrRockBritto tq 4 clarifying our doubts in this lock down sir
Welcome..
In Annual falciparum Incidence answer should come 15 cases /1000 population/year and not 1.5 cases
calculation is 600/40000 *1000
please correct me if i am wrong
Yes.. You are correct..It's 15 cases per 1000 population/year..
Thanks for pointing it..
Teaching is beautiful, very helpful for understanding. Almost all topics are covered and example problems are standard level. Thank you for this video.
Thanks a lot for your appreciation..
Very nice session
Thank you
🙏👍
Thank you sir
Welcome 🙏
Will they ask problem from only these models, can I get 10mark in problem by learning these model problem only sir !
Yes..it is not only helpful in exercise, but also helpful for your theory exams, especially epidemiology and demography.
11:57 maternal mortality rate is not the same as maternal mortality ratio….
Yes..
Maternal mortality ratio is maternal deaths/ live births..
Maternal mortality rate is maternal deaths/deaths in reproductive age group women..
The confusion continues as both are called MMR.
Has any one told you that you have an amazing voice ? 😁
Noone said.. Are you saying it??
Why there is multiplied with 4/12
When you are dealing with census population (March 1) and mid year population (July 1) the difference is 4 months. Four months out of a year will make 4/12 of a year.. so to meet the difference, we multiply by 4/12.
@@SPMResearchwithDrRockBritto thank you sir
@@SPMResearchwithDrRockBritto But y we shouldn't take it from January
Census Results for the country is for the date march 1.
@@SPMResearchwithDrRockBritto 👍
Please check whether these answers are correct..
Case Control Study - Answers:
Exposure Rates among OCP users = 60/300*100 = 20%.
Exposure Rates among non OCP users = 60/600 *100 = 10%.
Odds ratio = ad/bc = 2.2.
The Mark obtained by 10 individuals in a subject are as follows:
27,28,40,32,30,36,25,29,30,29. Calculate Mean deviation, Standard deviation, Standard error
and Confidence Interval.
Answers
Mean = sum of the observations/ Total number of observations = 306/10 = 30.6
Mean deviation =
Σ(𝑥−𝜇)
𝜂
= 32.4 /10 = 3.24
Standard deviation = √
Σ(𝑥−𝜇)
2
𝜂
= √
176.4
9
= 4.427
Standard error =
𝑆
√𝜂
= 4.427/ 3.16 = 1.4
Confidence Interval = 𝜇 ± 2 𝑆𝐸 = 30.6 ±2.8 = 27.8 - 33.4
Sir how u calculated exposure in case control study,is by formula a/c
Exposure rate among diseased is a/(a+c)
Exposure rate among non diseased is b/(b+c)
Exposure Rates among OCP users = 60/300*100 = 20%.
Exposure Rates among non OCP users = 60/600 *100 = 10%.
Odds ratio derivation of formula is a is very small in a+c.. so we can consider it as c.. likewise b in b+d is small. So it will be d. So the formula will become ad/bc..
Odds ratio = ad/bc = 2.2.
@@SPMResearchwithDrRockBritto why do we mutilplying with 100 in exposure sir
It is exposure rate.. expressed in percentage.. like your literacy rate..
@@SPMResearchwithDrRockBritto ok sir
18:40
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