Bioinformatics & Biostatistics Role: Faculty Title: Associate Professor Office No: KWING 4013-A Address: HSC Campus Phone: 502/852- 3525 E-mail: a0pere03@louisville.edu

EDUCATION

Ph.D. Biostatistics, New Orleans, Tulane University, 1995
M.Sc. Biostatistics, New Orleans, Tulane University, 1994
B.Sc. Statistics, Bogota, National University of Colombia, 1991

HONORS AND AWARDS

• 2005 "Young Investigators Appreciation Luncheon" honoring the research achievements of the university's junior's faculty. Houston.
• 2005 Healthy Community of Brownsville, certificate of appreciation from this organization
• 2005-2003 lnternational Biometric Society, Editorial Advisory Committee member
• 2005-2002, Council Member, lnternational Biometric Society
• 2004-2002, Program Committee Member IBC2004, lnternational Biometric Society
• 2002 Friends of public health award. Texas Department of Health, Public Health Region
• 11, for untiring efforts and commitment to Public Health
• 2001-2000, President, Colombian Group, lnternational Biometric Society
• 2000, Conference Award Scientist, International Society for Clinical Biostatistics
• 1999, Medicine National Academic Award, Colombian National Academy of Medicine
• First place on clinical area. Award given by project "Evaluation of Intensive Care in Colombia"
• 1998-1997, President, Colombian Group, lnternational Biometric Society
• 1997-1 996, Young Researcher, Colciencias, Colombia
• 1994, Abbott Award for Best Abstract in Epidemiology, Meeting of the European Helicobacter pylori Study Group Abstract # 73. Houston, Texas
• 1994-1 993, Scholarship, Tulane University
• 1993-1992, Best Statistician Student, Department of Mathematics and Statistics, National University of Colombia
•  Graduation with distinction in Statistics.

PUBLICATIONS

Peltz, G., Sanderson, M., Perez, A., Sexton, K. Casares, D.O. Fadden, M.K., Serum leptin
concentration, adiposity, and body fat distribution in Mexican Americans. In press Archives of
Medical Research.

Vela-Acosta, M.S., Sanderson, M., Cooper, S. P., Perez, A, Robert, R.E. (2007) Health Risk
Behaviors and Work Injury among Hispanic Adolescents. In press Journal of Agricultural Safety
and Health.

Perez, A., Hoelscher, D.M., Brown, H.S., Kelder, S.H. (2007) Differences in Food Consumption
and Meal Patterns in Texas School Children by Grade. In press. Preventing Chronic Disease.
Perez, A. (2007) Using the fractional imputation methodology to evaluate variance due to hot
deck imputation in survey data. Journal of Modern Applied Statistical Methods. (Volume 6, No.1)

Perez, A. (2007) Longitudinal evaluation of point and variance estimates in an establishment
survey after ratio imputation. ASA proceedings of the Joint Statistical Meetings. In Press.
American Statistical Association, Alexandria, VA.

Restrepo, B.I., Fisher-Hoch, S.P., Crespo. Jesus, G. Whitney, E., Phrez, A., Smith, B.,
McCormick, J.B. with the Nuevo Santander Tuberculosis Trackers. (2006) Type 2 diabetes and
tuberculosis in a dynamic binational border population. Epidemiology and Infection. DOI:
10.101 7/S0950268806006935. 1-9

Sanderson, M., Coker, A.L. Perez, A., Du, X.L., Peltz, G., Fadden, M.K. (2006) A Multilevel
Analysis of Socioeconomic Status and Prostate Cancer Risk. Annals of Epidemiology. Vot
16(12), 901-907.

Perez, A., Chan, W., Dennis, R.J. (2006) Predicting the Length of Stay of Patients Admitted for
Intensive Care Using a First Step Analysis. Health Services and Outcomes Research
Methodology. DOI: 10.1007/s? 0742-006-0009-9. Published Online: 10104/2006. In press.
Perez, A,, Brown, HS., Restrepo, B.I. (2006) Association between tuberculosis and diabetes in
the Mexican border and non-border regions of Texas. American Journal of Tropical Medicine
and Hygiene. 74(4) 604-61 1.

Perez, A,, Dennis, R.J., Rondon, M.A., Metcalfe, M.A., Rowan, K.M. (2006) A Colombian survey
found intensive care mortality ratios were better in private versus public hospitals. Journal of
Clinical Epidemiology. 59(1): 94-1 01.

Perez, A., Reininger, B.M., Aguirre-Flores, M.I., Sanderson, M., Roberts, R.E. (2006) Physical
Activity and Overweight Among Adolescents on the Texas-Mexico Border. [La actividad fisica y
el sobrepeso en adolescentes que viven en la frontera mexicanoestadounidense] Revista
Panamericana de Salud PublicalPan American Journal of Public Health, Volume 19, Number 4,
April 2006, pp. 244-252. Publisher: Pan American Health Organization (PAHO).

Perez, A., Finamore, J.M., Stratton, J.H. (2004) Using the fractional imputation methodology to
evaluate variance due to hot deck imputation in survey data. ASA proceedings of the Joint
Statistical Meetings,4143-4150. American Statistical Association, Alexandria, VA.

Perez, A., Anzaldua, M., McCormick, J., Fisher-Hoch, S. (2004) High frequency of chronic endstage
liver disease and hepatocellular carcinoma in an Hispanic population. Journal of
Gastroenterology and Hepatology. Vol 19, 289-295.

Perez, A., Dennis, R.J., Rodriguez, B., Delgado, V., Lozano, J.M, Arango, MC. (2003) An
Interrupted Time Series Analysis of Parental Antibiotic use in Colombia. Journal of Clinical
Epidemiology. Vol 56 (10). 101 3-1 020

Anaya JM, Uribe M, Perez A, Sanchez JF, Pinto LF, Molina JF, Londono MC, Cadavid ME,
Matute G. (2003) Clinical and immunological factors associated with lupus nephritis in patients
from northwestern Colombia. Biomedica. Sep;23(3):293-300. [Biomedica is a trimester scientific
publication from the National Institute of Health in Colombia. This journal is peer reviewed and it
is indexed at Medicus/Medline-National Library of Medicine, Literatura Latino-Americana in
Health Sciences, LILACS, SlBRA , CAB and the Latino-America index of Scientific and
Technology journals- LATINDEX).

Cadena, J., Vinaccia, S., Perez, A., Rico, M.I., Hinojosa, R., Anaya, J.M. (2003) The Impact of
Disease Activity onthe Quality of Life, Mental Health Status and Family Dysfunction in
Colombian Patients with Rheumatoid Arthritis. Journal of Clinical Rheumatology. 9(3): 142-1 50

Perez, A., Dennis, R.J., Gil, J_F.A., Rondon, M.A., Lopez, A. (2002) Use of the mean, hot deck
and multiple imputation techniques to predict outcome in intensive care unit patients in
Colombia. Statistics in Medicine. Vol 21 (24), 3885-3896.

Perez A, Rondon, MA. (2002) [Multiple Imputation: A novel method to handled missing data].
Acta Medica Colombiana, Vol 27(4), 204-208. (This Colombian peer-review journal is sponsored
by the Colombian Association of Internal medicine (ACMI). This journal is indexed at LILACS
and Publindex).

Dennis, R.J., Perez, A,, Rowan, K., Londoiio, D., Metcalfe, A., Gomez, C., McPherson, K.
(2002) [Associated factors with hospital mortality in Intensive Care Patients in Colombia].
Archivos de Bronconeumologia. 38(3): 117-122. (This peer-reviewed journat is sponsored by
the Spanish Association of Pneumology. This journal is indexed at Excerpta MedicalEMBASE,
lndex MedicuslMEDLINE, Current ContentslClinical Medicine, Science Citation lndex Expanded
and IS1 Alerting Services).

Castaiieda, J.A., Perez, A,, Gil, J.F.A. (2002) [Sample size required to estimate the arithmetic
mean of a lognormal distribution]. Revista Colombiana de Estadistica. 25(1), 31 - 41. (Thisjournal is sponsored by the National University of Colombia. Published since 1968 and indexed
at the Current lndex of Statistics).

Rosselli, D., Otero, A., Heller, D., Calderon, C., Moreno, S., Perez, A. (2001) [Estimating the
supply of medical specialists in Colombia by using the capture-recapture method]. Revista
Panamericana De Salud Publica = Pan American Journal of Public Health. 9(6): 393-8.

Gil, J.F.A., Perez A., Castafieda, J.A. (2001) Empirical Power from Existing Sample Size
Formulae for Logistic Regression. 2001. Proceedings of the American Statistical Association,
Biometrics Section [CD ROM], Alexandria, VA: American Statistical Association.

Castafieda, J.A., Perez, A., Gil, J.F.A. (2000) [Sample size required for survival analysis].
Revista Colombiana de Estadistica. 23(2): 46-64. (This journal is sponsored by the National
University of Colombia. Published since 1968 and indexed at the Current lndex of Statistics).

Dennis, R.J., Metcalfe, A., Perez, A., Londofio, D., Gomez, C., McPherson, K. and Rowan, K.
(2000) [Intensive Care in Colombia: Human and technology assessment in a middle-income
country]. Acta Medica Colombiana, Vol 25(5), 211-217. (This Colombian peer-review journal is
sponsored by the Colombian Association of Internal medicine (ACMI). This journal is indexed at
LILACS and Publindex).

Dennis, R., Perez A., Rowan, K., Londotio, D., Metcalfe, A., Gomez, C., McPherson, K. (2000)
[Associated factors to hospital mortality in admitted patients to intensive care units in Colombia]
Acta Medica Colombiana, Vol 25(5) 294-295. (This Colombian peer-review journal is sponsored
by the Colombian Association of Internal medicine (ACMI). This journal is indexed at LILACS
and Publindex).

Perez, A. and Caceres, C.A. (1999) [Data management system in research: Methods and
Guidelines] Revista Colombiana de Neumologia, Vol 11; 126-133. (This Colombian peer-review
journal is sponsored by the Colombian Society of Pneumology and Chest Medicine. This journal
is indexed at the Lationamerican lndex Medicus, LILACS, SlBRA and.SCIEL0).

Perez, A,, J.J. Lefante. (1997) How Much Sample Size is Required to Estimate the True
Arithmetic Mean of a Lognormal Distribution? 1996 Proceedings of the Section on Statistics and
the Environment. American Statistical Association. 11 1-1 15.

Perez, A., J.J. Lefante. (1997) Sample Size Determination and the Effect of Censoring When
Estimating the Arithmetic Mean of a Lognormal Distribution. Communications in Statistics.
Theory and Methods. Vol26(11) 2779-2801.

Perez, A., J.J. Lefante. (1996) How much sample size is required to estimate the true arithmetic
mean of a lognormal distribution?. ASA Proceedings of the section on Statistics and the
Environment. 11 1-1 15. American Statistical Association (Alexandria, VA).

Perez, A. (1996) [A review on Classification of Variables and its relationship to the selection of
the statistical analysis]. Revista Colombiana de Neumologia. Vol 8(4), 216-219. (This
Colombian peer-review journal is sponsored by the Colombian Society of Pneumology and
Chest Medicine. This journal is indexed at the Lationamerican lndex Medicus, LILACS, SlBRA
and SCIELO).

Fontham ET, Ruiz B, Perez A, Hunter F, Correa P. (1995) Determinants of Helicobacter pylori
infection and chronic gastritis. American Journal of Gastroenterology. 90(7): 1094-1 01.

Ruiz, B., Correa,P., Fontham, E.T.H., Rood, J.C., Malcom, G.T., Torrado, J., Perez, A,,
Ramakishnan, T., Hunter, F.M.. (I 994) Ascorbic Acid, Helicobacter pylori and Lewis phenotype
among blacks and whites in New Orleans. Cancer letters. Vol 83, 323-329.

BOOKS AND BOOK CHAPTERS

Brown, H.S., Pagan, J.A., Hanis, C., Perez, A. (2007) Capital Humano, Crecimiento, Pobreza:
Problematica Mexicana, chapter Diabetes and Employment. Productivity: Does Diabetes
Management Matter? Universidad Autonoma de Nuevo Leon, Mexico

Cepeda, M.S., Perez, A. (2004) [Concordance Studies: lnterchangeability in Measurement
Systems] Estudios de Concordancia: Intercambialidad en sistemas de medicion. Chapter 17.
In: Ruiz, A. and Morillo, L.E. Epidemiologia Clinica, lnvestigacion Clinica aplicada. Editorial
Medica Panamericana. Bogota, Colombia. p 293-307.

Perez, A., Dennis, R.J. (2004) [Determining the sample size] Calculo del tamaiio de muestra.
Chapter 9. In: Ruiz, A. and Morillo, L.E. Epidemiologia Clinica, lnvestigacion Clinica aplicada.
Editorial Medica Panamericana. Bogota, Colombia. p 141-162.

Cepeda, M.S., Perez, A. (2001) [Concordance Studies. Methods to Determine the
lnterchangeability between Different Measurement Systems in Clinical Practice]. lnvestigacion
Clinica: Epidemiologia Clinica Aplicada Chapter 17. Centro Editorial Javeriano. Bogota,
Colombia

Delgado, M.B., Rojas, M.X., Perez, A. (2001) [Conducting and Monitoring Studies].
lnvestigacion Clinica: Epidemiologia Clinica Aplicada Chapter 23 Centro Editorial Javeriano.
Bogota, Colombia

Cuervo, L.G., Lozano, J.M., Perez, A. (2001) [Systematic Reviews and Meta-Analysis].
lnvestigacion Clinica: Epidemiologia Clinica Aplicada Chapter 15. Centro Editorial Javeriano.
Bogota, Colombia

Perez, A., Gomez, A,, Sanchez, R., Dennis, R., Ruiz, A. (2001) [Sampling Techniques and
Fundamental Factors to Determine its Size]. lnvestigacion Clinica: Epidemiologia Clinica
Aplicada Chapter 22..Centro Editorial Javeriano. Bogota, Colombia

Roselli, D.A, Otero, A,, Heller, D., Calderon, C.P., Moreno, I.S., Perez, A. (2000) [The
specialized Medicine in Colombia. A diagnosfic approximation] Centro editorial Javeriano.
Bogota. Colombia.

Rodriguez N, Perez A. (1997) [Biostatistics in Clinical Research]. In: Medicina Interna. Editors:
Chalem, F., Escandon, J.E., Campos, J., Esguerra, R. Editor Fundacion lnstituto de
Reumatologia e Inmunologia. Third edition. Bogota, Colombia