Document 6ydazvpR7r45qK4gwymJM3KR
1 Good afternoon.
Page 3472
2 THE JURY: Good afternoon.
3 THE COURT: Mr. Williams, you may begin with
4 your examination, sir.
5 MR. WILLIAMS: Thank you. Good afternoon.
6 THE JURY: Good afternoon.
7 DIRECT EXAMINATION (CONTINUED)
8 BY MR. WILLIAMS:
9 Q Dr. Wong, as we established before we broke
10 for lunch, you are an expert in epidemiology.
:
11 Could you just start out by telling the jury
12 what epidemiology is?
13 A Epidemiology is the branch of medical
14 science that deals with the distribution and
15 determinants of diseases in humans; and in that
16 definition, you notice that there are two components.
17 The first component is distribution.
18 In other words, we want to find out what
19 kind of disease rates we see in different groups of
20 people; and once we have identified a high risk group,
'
21 we want to find out what causes that high rate of