Transcript What do epidemiologists do and how does this differ from the

Epidemiology in the Hospital Setting
Benjamin A. Rybicki, PhD
Senior Scientist, Henry Ford Hospital
Henry Ford Health System
Females
Age
#
Males
% of pop
#
Total
% of pop
#
% of pop
0-17
10529
7.6%
10814
7.8%
21343
15.4%
18-29
8887
6.4%
7667
5.5%
16554
11.9%
30-39
6543
4.7%
4775
3.4%
11318
8.1%
40-49
10761
7.7%
8362
Age
6.0% Females
19123
Males
13.8%
50-59
14400
10.4%
11498 0 - 178.3%
63458
25898
66583
18.6%
130041
60-69
11186
8.0%
7846
5.6%
42306
21002
38462
13899
39189
15.1%
32150
10.0%
81495
70-79
9816 18 - 29
7.1%
6053 30 - 39
4.4%
80+
5855
4.2%
3976 40 - 49
2.9%
50-59
62961
45.3%
60-69
51924
9831
52733
138968
31578
46138
7.1%
47000
100.0%
29638
98062
13773
11710
25483
9943
6764
16707
304177
279172
583349
Total
76007
54.7%
70-79
80+
Total
Total
70612
99733
61216
Respiratory
Research
Cardiovascular
Epidemiology
Epidemiology
Epidemiologists
Population Database Interviewers Molecular Biology
Human
PopulationsAbstractors Molecular
Bio
Laboratory
Laboratory
Prog/Data Mgrs. Data Entry
Cancer
Mol Biologists
Statistics
Statistics
Biostatisticians
Neuro
Biostatistics & Research Epidemiology
www.henryford.com/body.cfm?id=39207
BRE Organizational Structure
Biostatisticians
13
Epidemiologists
16
Data Management & Programming
10
Data Entry
2
Project Support
10
Molecular Epid Research Lab
6
Abstracting, Interviewing, RN/LPNs, MAs
36
Computer Facility
4
Grants Managers
2
Total Staff
103
Secretarial
3
Administrative Manager
1
A Nested Case-Control Study using a
Pathology-based Cohort
Benign Cohort
1990 – 2006
N=8,117*
PSA test +/- 1 year of benign specimen (N=7,122)
Yes
Prostate cancer diagnosis on or before
12/31/2010
Cases
N=1,441
Controls
N=5,681
≥ 1 year between benign
specimen and cancer
diagnosis
N=1,136
Aim 1 &
Aim 2
Aim 3
Benign tissue
available for study
N=931
Tumor tissue
available for study
N=698
No
≥ 1 year of follow-up
after benign biopsy
N=4,431
Case-Control Matching:
Age, race, and follow-up
duration
800 case-control pairs
650 case-control pairs
Benign tissue
available for study
N=3,633
Summary
•At Henry Ford, epidemiologists lead and co-lead research in
step with the mission of the health system. Biostatisticians
are often co-investigators on epidemiologist-lead research, but
focus most on statistical issues across multiple projects.
• Epidemiologists tend to favor observational studies, but
often employ methodologies developed by basic science
researchers and team with clinical researchers doing
intervention studies.
• Investigators who want to use population data to address a
research question can benefit from interactions with an
epidemiologist.