Transcript Scientific communication: posters and presentations

Scientific communication:
posters and presentations
Scott K. Heysell MD, MPH
Infectious Diseases and International Health
University of Virginia
All scientific communication is (polite) argument
▪ Grant
▪ Manuscript
▪ Meeting presentation/poster
▪ Editorial/ letter to the editor
▪ Peer review of another’s manuscript
▪ Letter of recommendation
Why did you perform the experiment?
Why are your results important?
How does your work impact your field of study?
Know your audience and the context
▪ Peers
▪ Colleagues familiar with your work
▪ Experts in your field
▪ Experts in a separate but related field
▪ Non-scientific or non-medical community
Stairwell conversation
Tea time conversation
Your thesis dissertation
Stairwell conversation
“Tuberculosis treatment outcomes are poor, we think in part
because of inadequate drug combinations and dosages. We
designed a test to see how well a TB patient’s plasma kills their
own TB. We hope to use the test to optimize the drug regimen.”
“Looking forward to your lecture this week!”
Tea time conversation
“We believe TB drug regimens can be optimized to improve
treatment outcomes. Low circulating drug levels are common but
require a lot of resources and expense to measure and their clinical
significance remains unclear. We developed a test to measure the
killing of a patient’s own plasma while on TB treatment that could
be performed in any lab with a MGIT machine. We found the assay
correlated well drug levels, particularly for isoniazid and rifampin,
the two most important drugs in first-line regimen. In Tanzania,
patients had low drug levels and poor plasma killing.”
“Can you please pass the sugar?”
Thesis dissertation
“TB drug regimens can be optimized to improve treatment
outcomes, but are dependent upon both achievable drug level and
M. tuberculosis MIC. In our study of the TB drug activity assay (TDA)
where we co-cultured plasma from TB patients with their own M. tb
isolate, we found a better correlation with TDA and drug level/ MIC,
than to drug level alone. This occurred despite low drug levels that
were still well above the MIC. Not only can TDA serve as an estimate
of drug levels in settings without access to HPLC, we think it should
be studied in the context of optimizing Cmax/ MIC for key drugs
within both a drug-susceptible and a MDR-TB regimen.”
“Would you like to fund my grant?”
Components of a scientific poster
A descriptive title in large font, often referencing the
study design
Authors names and institutions
Abstract
People read here
Methods
Results
Conclusions
Results
Results
Implications
Optional to
include
Background
Data
x
y
1
4
7
5
2
5
8
0
3
6
9
10
Photo
Support/
Contact
Now some examples of my own posters
for you to criticize
(load other
powerpoint slides)
Someone stops at your poster:
Introduce yourself
Proceed with the “stairwell” conversation
If they appear interested:
Offer to walk them through the key results
Proceed with the “tea time” conversation
If they are still listening, asking questions:
Emphasize the conclusions/implications
Proceed with the “thesis dissertation”
Components of a 10 minute
oral presentation for scientific meeting
(Leaving 3-5 minutes for questions)
Title page  1 slide  30 seconds
Background  1 (maybe 2) slides  1-2 minutes
Not much time,
use wisely
Methods  2-3 slides  2-3 minutes
Results  3-4 slides (figures/ tables)  4-5 minutes
Conclusions  1 slide  1 minute
Implications 1 slide  1 minute
Acknowledgements only if not in title page  1 slide < 30 seconds
Choose the right color font/ background
Or else you will lose your audience
(this font is too small)
Black font / white background
Yellow font/ blue background
Black font/ yellow background
24 point font is the smallest to use
(practice projecting presentation with a colleague before)
Choose the right color font/ background
Or else you will lose your audience
(this font is too small)
Black font / white background
Yellow font/ blue background
Black font/ yellow background
24 point font is the smallest to use
(practice projecting presentation with a colleague before)
Choose the right color font/ background
Or else you will lose your audience
(this font is too small)
Black font / white background
Yellow font/ blue background
Black font/ yellow background
24 point font is the smallest to use
(practice projecting presentation with a colleague before)
(An example of what not to choose)
Choose the right color font/ background
Or else you will lose your audience
(this font is too small)
Black font / white background
Yellow font/ blue background
Black font/ yellow background
24 point font is the smallest to use
(practice projecting presentation with a colleague before)
Keep powerpoint art to a minimum
But it is acceptable to use a header line that does
not distract and is kept throughout
Header font and text font should be kept the same
size throughout
Small icons of university or affiliation are common in
bottom or top corners, particularly for title page
Example of Title and Background slides
Blood Cultures for the Diagnosis of
Drug-resistant TB in Rural South Africa
ASTMH Annual Meeting, 2009
Scott K. Heysell MD, MPH
Infectious Diseases and International Health
University of Virginia
Tugela Ferry Care and Research Collaboration
on behalf of:
Tania A. Thomas, Neel R. Gandhi, Anthony P. Moll,
François Eksteen, Yacoob Coovadia, Lynne Roux,
Palav Babaria, Umesh Lalloo, Gerald Friedland and N. Sarita Shah
TF CARES
Tugela Ferry Care and Research
Collaboration
Tugela Ferry, KwaZulu-Natal, South Africa
South Africa TB incidence: 948/100,000
Tugela Ferry
South Africa TB pts co-infected with HIV: 44%
Tugela Ferry ~80-90%
2006-2008 >650 cases of MDR and XDR-TB
from Tugela Ferry
Tugela Ferry TB mortality*:
MDR-TB 71%
XDR-TB 83%
*Gandhi, AJRCCM 2010.
Drug-resistant TB
• Multi-drug resistant (MDR)-TB= resistant to
isoniazid and rifampicin
• Extensively drug-resistant (XDR)-TB= MDR plus
resistance to at least one fluoroquinolone and
one second-line injectable agent (capreomycin,
kanamycin, amikacin)
Examples of a Results slide
Majority of slow responders in Virginia had low C2hr levels
of isoniazid (INH) and rifampin (RMP)
39 patients had testing to both INH and RMP:
32 (82%) had low levels to either medication
Increasing RMP or INH concentration results in greater TB drug activity
5
4.5
4
TDA
*
†
3.5
3
killing
2.5
static
*
†
Isoniazid (INH)
concentration
µg/ml
2
INH 0
1.5
INH 3
INH 1
INH 5
1
0.5
0
RMP 0
MIC: [INH <0.03, RMP 0.25]
RMP 4
RMP 8
Rifampin (RMP) concentration µg/ml
RMP 16
†p=0.008
*p=0.07
Example of Conclusions/ Implications slides
Conclusions
Summary of
results in
written form
▪ PZA is not inhibitory. EMB may have modest inhibitory effect
against some susceptible isolates, but is not additionally
inhibitory in combination with INH or RMP (data not shown) or
against MDR-TB.
TDA is largely a measure of INH and RMP activity
▪ At clinically relevant combinations of INH and RMP, TDA
reflects measurable additive effect for each drug, particularly
when the MIC is low.
▪ As a measure of Cmax/MIC, TDA may add information beyond
conventional drug susceptibility testing or drug levels alone.
Implications
Why is the
study important,
how does it
change the field
▪ TDA can be used as estimate of drug activity in resourcelimited settings that do not have access to individual drug
level measurement (HPLC).
▪ TDA may be used for optimization of drug regimens in
patients at risk of poor response to TB treatment.
▪ TDA warrants further study in larger cohorts and in multidrug resistant TB where other medications are used.
Summary
All scientific communication is (polite) argument
Remember the audience/context:
stairwell conversation, tea time conversation, and thesis dissertation
Posters:
▪ leave plenty of blank space
▪ less words and more figures/tables
▪ highlight the top right corner for results and conclusions
Presentations:
▪ practice timing, remember to leave 3-5 minutes for questions
▪ project presentation and stand at the back of room to see if all
slides are readable
Practice, Practice, Practice