An investigator compares the mortality of plastic industrial workers with that of the general population and finds a crude RR of 0.80.  Then she compares the same cohort to a cohort of textile workers and obtains a crude RR of 1.5 (plastic: textile).  (5 pts) What is this effect called? (1-2 sentences) Explain the dynamics behind the effect. (1-2 sentences) What could the investigator conclude? (1-2 sentences)

Which of the following are characteristics of individualism?

Compared to a triglyceride molecule, a protein molecule ________.

What is your conclusion as to whether there is evidence of an association?

What study design is this?

What changes in the study design would help avoid the potential effects of blood lead level?

Relatives who are related by blood, marriage, remarriage, or adoption are called __________.

Explain how recall bias operates with reference to a 4-fold table (draw the table). What is the bias, and what does it produce?  Why is recall bias different from ‘poor recall’?  (5pts)

If adjusted RR is higher than the crude RR, (cRR

The ba‘alim were worshipped by the people of