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NBME 23 Answers

nbme23/Block 4/Question#8 (23.2 difficulty score)
A 36-year-old nulligravid woman and her ...
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 +4  upvote downvote
submitted by seagull(1107),
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WeidrearHyg-bn uoiqetan = 1= P^2 + qp2 + ^q2

P2^ = ,10/0100 = 11/00

nhTe bemmreer P + q = 1 --;&-g-t-- /1010 + q = 1 q( = )90/910

Ltylas gplu ackb otni egendiyrr-abWH Etaoiqun as:

q2p = oHtyrzteogee ercrrai

(2 x 1/100 x 19009/ = 0/201 = 05)1/

link981  I think q should be 1/100. You got p and q mixed up. +3  
humble_station  Because p = 99/100, you can just make it 1. Then just do 2 x (1/100) and you get 1/50 +4  
humble_station  Because p = 99/100, you can just make it 1. Then just do 2 x (1/100) and you get 1/50 +  
unhappy_triad  Carrier frequency= 2pq AR disorder that occurs in 1 in 10,000 the square root of 10,000 is 100 so, q=1/100=0.01, p= a number close to 1, just use 1. plug it in the equation 2pq= 2(1)(0.01)=0.02=1/50 +1  



 +2  upvote downvote
submitted by tamey(0),

disease prevalence is 1/10000 which means q square=1/10000 thus q=1/100 and since they are asking about carrier frequency which is 2pq, p is always assumed 1 this will lead to 211/100=1/50