Quantitative 3

Question 1

Odds equation

Answer 1

(p/(1-p)

Question 2

Interpretating OLS results

Answer 2

1 cm in additional height is associated with 800 grams of extra weight

Question 3

Interpretating logistic results

Answer 3

probability of being heavy increases with height

Question 4

Positive B coefficient logistic

Answer 4

The probability of being >70 kg increases with height

Question 5

RR

Answer 5

.. times as likely

Question 6

RD

Answer 6

is …%-points higher for A than B

Question 7

Odds

Answer 7

Odds for A are … times the odds for B

Question 8

For small probabilities OR and RR …

Answer 8

are similar, otherwise OR is an overestimate of RR

Question 9

Calculating RR & RD from observed proportions gives

Answer 9

an unadjusted, biased effect

Question 10

Calculating RR & RD from adjusted proportions is .. & gives

Answer 10

based on marginal effects / results from LRA
gives unbiased effect
(Adjustment because of the S-shape)

Question 11

Individual OR is …

Answer 11

equal for all patients

Question 12

Individual RR and RD is

Answer 12

different for each patient

Question 13

Table 2 fallacy

Answer 13

Interpreting coefficient of one regression model all as estimates of full effect and unbiased
May present biased or partial effects

Question 14

B coefficients

Answer 14

Open paths which transmit association