University of Massachusetts at Boston
McCormack School of Policy Studies

Epidemiological Thinking and Population Health

PPol G/ Nursing 753
Spring 2011

Introduction to the concepts, methods, and problems involved in analyzing the biological and social influences on behaviors and diseases and in translating such analyses into population health policy and practice. Special attention given to social inequalities, changes over the life course, and heterogeneous pathways. Case studies and course projects are shaped to accommodate students with interests in diverse fields related to health and public policy. Students are assumed to have a statistical background, but the course emphasizes epidemiological literacy with a view to collaborating thoughtfully with specialists, not technical expertise.

Instructor: Peter Taylor, Critical & Creative Thinking Program
Phone: 617-287-7636
Office: Wheatley 2nd flr 157 (on back corridor parallel to main long corridor)
Class meetings: W-2-157. Weds 4-6.30pm or Online
Contact hours: Weds 1.00-2.00; 6.30-7.00 (in office or by phone), by email signup at, or by arrangement)
Course Website:
Course wiki: (with links for each session to lecture, notes about preparing, and annotations of the common & additional readings)
Discussion Leading SignUp Sheet:
Voicethread for asynchronous discussion and responses: (password required)
Class email list: Emails sent to will go to everyone in the course.
Password-protected readings: Link to site to access these
Glitches--use this link to report glitches in online



Gordis, L. Epidemiology. Philadelphia, Saunders/ Elsevier. (=primer for the course. Old editions are OK.)
Readings on a password-protected site (not on Healey e-reserves).
Useful technical text to borrow, but not required: Kirkwood, B. R. and J. A. C. Sterne (2003). Essential Medical Statistics. Malden, Blackwell.
A guide on technical matters of writing scholarly papers, such as, Turabian, K. L. (1996). A Manual For Writers of Term papers, Theses, and Disertations. Chicago: University of Chicago Press (also in library's reference section).
A searchable compilation of syllabi from epidemiology courses bookmarked at


The syllabus is organized around a sequence of basic ideas in thinking like epidemiologists, especially epidemiologists who pay attention to possible social influences on the development and unequal distribution of diseases and behaviors in populations. The topic for any given class will be introduced through a mini-lecture during the last part of the previous class (and then posted online). The class itself begins with one (or two) student(s) (co-)leading discussion on one to three common readings, which are chosen not only to illustrate the topic (and pick up on topics of previous classes) but also to identify controversies or problems around the topic. The other students will be responsible for bringing into the discussion the key ideas from one reading they choose from the supplementary list or from an article they find that connects the topic to their own area of interest or from following up on the research behind a relevant recent article in the media. (Online students lead or contribute via voicethread presentations.) Via a googledocs form students post an annotation of the one of the common readings (when the student is [co-]leading the discussion) or the supplementary or additional article (when the student is not leading). These annotations are uploaded periodically by the instructor onto a course wiki.

The middle period of each class -- between the discussion and the mini-lecture -- takes the form of a workshop in which each student prepares a sketch of ways that the concepts, methods, and problems of that week might be applied to a research or policy question in their own area of interest. The workshop period allows for one-on-one interaction with instructor and peer input/support/coaching. (Online students arrange this one-on-one interaction at mutually convenient times each week.) It is expected that the definition of the research/policy question will not be clear at the start but will become focused as the course proceeds. The sketches are assembled into an evolving portfolio, which will also include the annotations and weekly additions to a personal glossary of terms from chapters of the Gordis text illustrated by examples from the student's field. At the end of the course, students select highlights from their portfolio and introduce them with an essay that explains the development of their thinking to an outside reader.

The conventional notion of teaching as transmission of knowledge from instructor to students has some place in this course. The instructor will provide (through the mini-lectures and course wikipages) an introduction to and motivation of each sessions' readings and cases. The instructor will also provide assistance with technical questions of concern either to the whole class or to individual students, refer to relevant sections of Gordis and Kirkwood, and/or help students create a network of specialists they can consult with during and the semester and after the course is over. At the same time, it is expected that students (and the instructor) will have to employ strategies of reading that allow us to extract take-home lessons from readings even as we skip sections that become too technical for us. The course as a whole aims to cultivate skills and dispositions of critical thinking and of life-long, cooperative learning facilitated by the resources of the internet. The use of controversies follows an idea central to critical thinking that we understand ideas better by holding them in tension with alternatives.


Notes on teaching/learning interactions (incl. rationale for Assessment Requirements).

Written assignments, 3/4 of course grade Participation and contribution to the class process, 1/4 of course grade Overall course grade. If you complete at least 30 of the written assignments and at least 16 participation items you get 80 points. (If you do fewer of either, you get 2 points for each written assignment submitted on time & revised until OK/RNR is received [1 point for late submissions/revisions] and 1.25 for each participation item up to a maximum of 80.) The rubric below is used at the end of the course to add further points.
For each quality "fulfilled very well" you get 3 additional points. If you "did an OK job, but there was room for more development/attention," you get 1.5 points.
1. Written assignments submitted weekly (and revisions timely),
2. often revised thoroughly and with new thinking in response to comments,
3. showing progressive growth in ability to translate epidemiological thinking into your own area of interest, and resulting in
4. final portfolio with well-selected examples and a well-structured essay that explains your development during the semester and future plans.
5-7. Consistent work outside class connecting topics to your own interests, as evidenced in 8. Active, prepared participation and building class as learning community.

Minimum points for letter grades: A >= 95 points, A- 87.5, B+ 80, B 72.5, B- 65, C+ 57.5, and C 50.

ACCOMMODATIONS: Sections 504 and the Americans with Disabilities Act of 1990 offer guidelines for curriculum modifications and adaptations for students with documented disabilities. If applicable, students may obtain adaptation recommendations from the Ross Center (287-7430). The student must present these recommendations to each professor within a reasonable period, preferably by the end of the Drop/Add period.

Students are advised to retain a copy of this syllabus in their personal files.

This syllabus is subject to change, but workload expectations will not be increased after the semester starts.
Version 24 January '11

Acknowledgements: The assistance of Jan Coe and Louisa Holmes, the advice of Yoav Ben-Shlomo and Barbara Goldoftas, and the hospitality of the Department of Social Medicine, University of Bristol were helpful in the development of the syllabus for this course in 2007 and 2009.


Recommended reading in advance of the course: see readings for Class 1 (below)

(1/26) 1a. The course as a learning community
Idea: Developing epidemiological literacy requires collaboration with others (of differing skills and interests) and reflection on personal and professional development.
Students identify personal, intellectual, professional interests in relation to central themes about inequality, pathways of development, and policy (worksheet, followed by spoken introductions).
1b. Reading strategies, part 1
Idea: Developing epidemiological literacy requires establish our own practices of learning from material we don't fully grasp at first reading/hearing.
Case 1: Risks in risk reduction (Rabin 2009)
Case 2: On analysis that relates to effective interventions, absolute versus relative risk, and how health disparities are conceived (video; may require downloading free realplayer software)

Mini-lecture to set the scene for the topic of the next week. (ditto for subsequent weeks, even though not listed explicitly from week 2 on.)
"Of Rice and Men"
(The case of Christiaan Eijkman and his search for the cause of beriberi in the Dutch East Indies in 1890s, D. Allchin) (introduction; link to full case to be added after the class)

Homework: Review this syllabus, the Wiki and links in the navigation bar, Notes on teaching/learning interactions and linked guidelines on the wiki site, assessment system, access to readings, Voicethread instructions (password required). (Online students should play around in the voicethread sandbox.)
Email questions to the email group or bring to class 2.

(2/2; 11.25am-1.55pm) 2. Phenomena: Exploring the "natural history" of disease
Idea: Detailed observation (like a naturalist) or detective work--albeit informed by theoretical ideas--may be needed before we can characterize what the phenomenon is we are studying, what questions we need to ask, and what categories we need for subsequent data collection and analysis.
Common reading and cases: Oxford 2005 (1918 flu pandemic), Barker 1971 (buruli disease)
Supplementary Reading: Barker 1998,pp.1-12, 167-172, Barker 1999, Brody 2000, PBS "Killer flu" Video
Idea (behind glossary): Non-specialists need to become comfortable with the fundamental ideas and basic vocabulary of epidemiology in order to converse intelligently with specialists in epidemiology and biostatistics. One way to move in that direction is to practice making the ideas accessible to the layperson.
Initial Workshop, which will cover glossary entries (instructions) and formulation of a useful project to pursue through the workshop sessions, as well as the translation of this week's concepts, methods, and problems into your own areas of interest.
Also: Questions on syllabus and course mechanics, including coaching each other on use of voicethread, googledocs, and wiki.
(Workshop sessions will be held in future weeks even though not listed explicitly from this point on.)

(2/9; 5.00-7.30pm) 3. The scope and challenges of epidemiology
Idea: The uses of epidemiology are many, but shift over time, and are subject to recurrent challenges from inside and outside the field.
Idea: In advising on the most effective measures to be taken to improve the health of a population, epidemiologists may focus on different determinants of the disease than a doctor would when faced with sick or high-risk individuals.
Common readings: Davey-Smith 2001 (uses of epidemiology), Rose 1985 (population health)
Supplementary Reading: Brandt 2000, Caldwell 2001, Pearce 1996, Schwartz 1999

(2/16) 4. Categories
Idea: Collecting and analyzing data requires categories: Have we omitted relevant categories or mixed different phenomena under one label? What basis do we have for subdividing a continuum into categories? How do we ensure correct diagnosis and assignment to categories? What meaning do we intend to give to data collected in our categories?
Common readings and cases: Davey-Smith et al. 2000 (Comparative methods for studying socioeconomic position and health in different ethnic communities), Poland 2004 ("schizophrenia")
Supplementary Reading: Birley 2000, Dohrenwend 1993, Hymowitz 2007, Pickles 2003

(2/23) 5. Associations, Predictions, Causes, and Interventions
Idea: Relationships among associations, predictions, causes, and interventions run through all the cases and controversies in this course. The idea introduced in this session is that epidemiology has two faces: One from which the thinking about associations, predictions, causes, and interventions are allowed to cross-fertilize, and the other from which the distinctions among them are vigorously maintained, as in "Correlation is not causation!" The second face views Randomized Control Trial (RCTs) as the "gold-standard" for testing treatments in medicine. The first face recognizes that many hypotheses about treatment and other interventions emerge from observational studies and often such studies provide the only data we have to work with. What are the shortcomings of observational studies we need to pay attention to (e.g., systematic sampling errors leading to unmeasured confounders-see next class)?
Common readings and cases: Ridker 2007 (Cardiac risk factors), Stampfer 1991, 2004 (Hormone replacement therapy)
Supplementary Reading: Alzheimer Research Forum 2004, Davey-Smith & Ebrahim 2007,pp2-8, Jick 2000, Petitti 2004, Shunkert 2008

(3/2) 6. Confounders & conditioning of analyses
Idea: Statistical associations between any two variables generally vary depending on the values taken by other "confounding" variables. We need to take this dependency (or conditionality) into account when using our analyses to make predictions or hypothesize about causes, but how do we decide which variables are relevant and real confounders?
Common readings and cases: Davey-Smith 1997 (Control at work and mortality), Davey-Smith & Ebrahim 2007 (Mendelian randomization to analyze environmental exposures), Hernan (2000), Lynch 2007 (video)
Supplementary Reading: Davies 2006, Egede 2003, Huxley 2002, Lawlor 2004, Petitti 2005, Prentice 2005

(3/9) 7. Variations in health care (by place, race, class, gender)
Idea: Inequalities in people's health and how they are treated are associated with place, race, class, gender, even after conditioning on other relevant variables.
Common readings and cases: Alter 1999 (Access to cardiac procedures), Krieger 2005 (Variation in mortality across communities), Lynch 2007 (video)
Supplementary Reading: Bassuk 2002, Davey-Smith 2000, Dunn 2007, Egede 2003, Gawande 2009, Marmot 2001, Roger 2000, Wright 2004

Mid-semester self-assessment

No class 3/16 - chance to catch up with glossary and sketches and revisions
(3/23) 8. Heterogeneity within populations and subgroups
Idea: How people respond to treatment may vary from one subgroup to another--When is this a matter of chance or of undetected additional variables? How do we delineate the boundaries between subgroups?
Common readings and cases: Regan 2005 (Forms of breast cancer), Lagakos 2006 (Statistical concerns)
Supplementary Reading: Eikelboom 2003, Gum 2003, Kahn 2007, Nelson 2005

(3/30) 9. Placing individuals in a multileveled context
Idea: Different or even contradictory associations can be detected at different levels of aggregation (e.g., individual, region, nation), but not all influences can be assigned to properties of the individual—Membership in a larger aggregation can influence outcomes even after conditioning on the attributes of the individuals.
Common readings and cases: Freedman 2001 (Ecological and atomistic fallacies), Diez-Roux 2002a, b (Neighborhood effects), Marcelli 2006 (Obesity)
Supplementary Reading: Balfour 2002, Coulton 1999, Dunn 2007, Korbin 2000, Lawlor 2005, Marcelli 2005, Oakes 2004

(4/6) 10. Life course epidemiology
Idea: How do we identify and disentangle the biological and social factors that build on each other over the life course from gestation through to old age?
Common readings and cases: Ben-Shlomo 2002 (Life course development of disease), Brown 1978 (Life Events and Difficulties)
Supplementary Reading: Barker 1998,pp43-80, Berney 2000, Davey-Smith 2007, Krieger 2005b, Kuh 2003, Lynch 2005.

(4/13) 11. Multivariable "structural" models of development
Idea: Just as standard regression models allow prediction of a dependent variable on the basis of independent variables, structural models can allow a sequence of predictive steps from root ("exogeneous") through to highest-level variables. Although this kind of model seems to illuminate issues about factors that build up over the life course, there are strong criticisms of using such models to make claims about causes.
Common readings and cases: Kendler 2002 (pathways to depression in women), Freedman 2005 (Structural models as causal models?)
Supplementary Reading: Chandola 2006, Ou 2005, Rini 1999

(4/20) 12. Heritability, heterogeneity, and group differences
Idea: As conventionally interpreted, heritability indicates the fraction of variation in a trait associated with "genetic differences." A high value indicates a strong genetic contribution to the trait and "makes the trait a potentially worthwhile candidate for molecular research" that might identify the specific genetic factors involved. I contest the conventional interpretation and contend that there is nothing reliable that anyone can do on the basis of estimates of heritability for human traits. While some have moved their focus to cases in which measurable genetic and environmental factors are involved, others see the need to bring genetics into the explanation of differences among the averages for groups, especially racial groups.
Common readings and cases: Moffitt 2005 (Interaction of measured genes and measured environments), Taylor 2010 (skepticism about the estimation and interpretation of heritability)
Supplementary Reading: Caspi 2002, Davey-Smith 2009, Dickens 2001, Plomin 2006, Rushton 2005, Rutter 2002, Turkheimer 2000

(4/27) 13. Genetic diagnosis, treatment, monitoring, and surveillance
Idea: Genetic analysis has begun to identify genetic risk factors. We need to consider the social infrastructure needed to keep track of the genetic and environmental exposures with a view to useful epidemiological analysis and subsequent healthcare measures. Even in cases where the condition has a clear-cut link to a single changed gene and treatment is possible, there is complexity in sustaining that treatment.
Common readings and cases: Khoury 2007 (Many genes as small risk factors), Paul 1998 (Complexities of social support after PKU diagnosis)
Supplementary Reading: Bowcock 2007, Frank 2005, Taylor 2009

Note:: Complete draft of final portfolio selection due; 2 copies, for instructor and peer commentator.

(5/4) 14a. Popular epidemiology and health-based social movements
Idea: The traditional subjects of epidemiology become agents when: a. they draw attention of trained epidemiologists to fine scale patterns of disease in that community and otherwise contribute to initiation and completion of studies; b. their resilience and reorganization of their lives and communities in response to social changes displaces or complements researchers' traditional emphasis on exposures impinging on subjects; and c. when their responses to health risks displays rationalities not taken into account by epidemiologists, health educators, and policy makers.
Common readings and cases: Brown 1992 (Popular epidemiology), Davison 1991 (Lay epidemiology)
Supplementary Reading: Black 2001, Brown 2006, Epstein 1995, Lawlor 2003, Schienke 2001

14b. Taking Stock of Course: Where have we come and what do we need to learn to go further?
Idea: In order to move ahead and continue developing, it is important to take stock of what went well and what needs further work.
  • Comparison of initial plans and current position. Revision of plans for personal and professional development.
  • Instructor's and formal course evaluations.

    No class, 5/11. Portfolios due by email attachment.


    Link to site to access password-protected readings
    Alter, D. A., C. D. Naylor, et al. (1999). "Effects of socioeconomic status on access to invasive cardiac procedures and on mortality after acute myocardial infarction." New England Journal of Medicine 341: 1359-1367.
    Alzheimer_Research_Forum (2004). "Philadelphia: All Is Not Well with the Statin Story."
    Balfour, J. L. and G. A. Kaplan (2002). "Neighborhood Environment and Loss of Physical Function in Older Adults: Evidence from the Alameda County Study." American Journal of Epidemiology 155: 507-515.
    Barker, D. J. P. (1971). "Buruli disease in a district of Uganda." Journal of Tropical Medicine and Hygiene 74: 260-264.
    Barker, D. J. P. (1998). Mothers, Babies, and Health in Later Life. Edinburgh, Churchill Livingstone.
    Barker, D. J. P. (1999). "Commentary: Intrauterine nutrition may be important." British Medical Journal 318: 1471-1480. (
    Bassuk, S. S., L. F. Berkman, et al. (2002). "Socioeconomic Status and Mortality among the Elderly: Findings from Four US Communities." American Journal of Epidemiology 155: 520-533.
    Ben-Shlomo, Y. and D. Kuh (2002). "A life course approach to chronic disease epidemiology: Conceptual models, empirical challenges and interdisciplinary perspectives." International Journal of Epidemiology 31: 285-293.
    Berney, L., D. Blane, et al. (2000). Life course influences on health in old age. Understanding health inequalities. H. Graham. Buckingham [England], Open University Press: 79-95.
    Birley, J. and D. Goldberg (2000). George Brown's contribution to psychiatry: The effort after meaning. Where Inner and Outer Worlds Meet. T. Harris. London, Routledge: 55-60.
    Black, N. (2001). "Evidence based policy: proceed with care," BMJ 323: 275-279.
    Bowcock, A. M. (2007). "Guilt by association." Nature 447: 645-646.
    Brandt, A. M. and M. Gardner (2000). "Antagonism and accommodation: interpreting the relationship between public health and medicine in the United States during the 20th century." American Journal of Public Health 90: 707-715.
    Brody, H., M. R. Rip, et al. (2000). "Map-making and myth-making in Broad Street: the London cholera epidemic, 1854." The Lancet 356: 64-68.
    Brown, G. W. and T. O. Harris (1978). Sociology and the aetiology of depression; Depression and Loss; A Model of Depression; Summary and conclusions. Social Origins of Depression: a Study of Psychiatric Disorder in Women. New York, Free Press: 3-20; 233-293.
    Brown, P. (1992). "Popular Epidemiology and Toxic Waste Contamination: Lay and Professional Ways of Knowing." Journal of Health and Social Behavior 33: 267-281.
    Brown, P., S. McCormick, et al. (2006). "'A lab of our own': Environmental causation of breast cancer and challenges to the dominant epidemiological paradigm." Science, Technology, & Human Values 31(5): 499-536.
    Caldwell, J. C. (2001). "Population health in transition." Bulletin of the World Health Organization 79(2): 159-160.
    Caspi, A., J. McClay, et al. (2002). "Role of Genotype in the Cycle of Violence in Maltreated Children." Science 297(5582): 851-854.
    Chandola, T., P. Clarke, et al. (2006). "Pathways between education and health: a causal modelling approach." Statistics in Society 169(2): 337-359.
    Coggon, D., G. Rose, et al. (1999). Epidemiology for the Unitiated. London, BMJ Books. (Available online at
    Coulton, C. J., J. E. Korbin, et al. (1999). "Neighborhoods and Child Maltreatment: A Multi-Level Study." Child Abuse & Neglect 23(11): 1019–1040.
    Davey-Smith, G. (2000). "Learning to live with complexity: Ethnicity, socioeconomic position, and health in Britain and the United States." American Journal of Public Health 90: 1694-1698.
    Davey-Smith, G. (2001). "The uses of Uses of Epidemiology." International Journal of Epidemiology 30: 1146-1155.
    Davey-Smith, G. (2007). "Life-course approaches to inequalities in adult chronic disease risk." Proceedings of the Nutrition Society 66: 216-236.
    Davey-Smith, G. (2009). "Mendelian randomization for strengthening causal inference in observational studies: Application to gene by environment interaction." Perspectives on Psychological Science, in press.
    Davey-Smith, G. et al. (2000). Ethnicity, health and the meaning of socio-economic position Pp. 25-37 In Graham, H., Ed. Understanding health inequalities. Buckingham [England], Open University Press.
    Davey-Smith, G. and S. Harding (1997). "Is control at work the key to socioeconomic gradients in mortality?" Lancet 350: 1369-1370.
    Davey-Smith, G. and S. Ebrahim (2007). "Mendelian randomization: Genetic variants as instruments for strengthening causal influences in observational studies. Pp 336-366 in Weinstein, M., Vaupel, J. W., Wachter, K.W. (eds) Biosocial Surveys. Washington, DC, National Academies Press.
    Davies, A., G. Davey-Smith, et al. (2006). "Association between birth weight and blood pressure is robust, amplifies with age, and may be underestimated." Hypertension 48: 431-436.
    Davison, C., G. Davey-Smith, et al. (1991). "Lay epidemiology and the prevention paradox: The implications of coronary candidacy for health education." Sociology of Health and Illness 13: 1-19.
    Dickens, W. T. and J. R. Flynn (2001). "Heritability estimates versus large environmental effects: The IQ paradox resolved." Psychological Review 108(2): 346-369.
    Diez Roux, A. V. (2002a). "Invited Commentary: Places, People, and Health." American Journal of Epidemiology 155: 516-519.
    Diez Roux, A. V. (2002b). "A glossary for multilevel analysis." Journal of Epidemiology and Community Health 56: 588-594.
    Dohrenwend, B. P., K. G. Raphael, et al. (1993). The structured event probe and narrative rating method for measuring stressful life events. Handbook of Stress: Theoretical and Clinical Aspects. L. Goldberg and S. Breznitz. New York, Free Press: 174-199.
    Dunn, J. R. and S. Cummins (2007). "Placing health in context." Social Science & Medicine 65: 1821-1824
    Egede, L. E. and D. Zheng (2003). "Racial/Ethnic Differences in Adult Vaccination Among Individuals With Diabetes." American Journal of Public Health 93(2): 324-329.
    Eikelboom, J. W. and G. J. Hankey (2003). "Aspirin resistance: a new independent predictor of vascular events?" Journal of the American College of Cardiology 41: 966-968.
    Epstein, S. (1995). "The construction of lay expertise: AIDS activism and the forging of credibility in the reform of clinical trials." Science, Technology, & Human Values 20(4): 408-437.
    Fortun, K. (2004). "Environmental Information Systems as Appropriate Technology." Design Issues 20(3): 54-65.
    Frank, J. (2005). "A Tale of (More Than ?) Two Cohorts – from Canada." 3rd International Conference on Developmental Origins of Health and Disease.
    Freedman, D. A. (2001). Ecological inference and the ecological fallacy. International Encyclopedia for the Social and Behavioral Sciences. N. J. Smelser and P. B. Baltes. Vol. 6. (
    Freedman, D. A. (2005). Linear statistical models for causation: A critical review. Encyclopedia of Statistics in the Behavioral Sciences. B. Everitt and D. Howell. ??, Wiley.
    Gawande, A. (2009). "The cost conundrum: What a Texas town can teach us about health care." The New Yorker (1 June).
    Gordis, L. (1996, 2000, 0r 2004). Epidemiology. Philadelphia, Saunders/Elsevier.
    Gum, P. A., K. Kottke-Marchant, et al. (2003). "A prospective, blinded determination of the natural history of aspirin resistance among stable patients with cardiovascular disease." Journal of the American College of Cardiology 41: 961-965.
    Hernan, M. A. (2002). "Causal Knowledge as a Preequisite for Confounding Evaluation: An Application to Birth Defects Epidemiology." American Journal of Epidemiology 155: 176-184.
    Huxley, R., A. Neil, et al. (2002). "Unravelling the fetal origins hypothesis: is there really an inverse association between birthweight and subsequent blood pressure?" Lancet 360(9334): 659-65.
    Hymowitz, K. S. (2007). "Marriage and Caste in America: Separate and Unequal Families in a PostMarital Age." Heritage Lecture #1005.
    Jick, H., G. L. Zomberg, et al. (2000). "Statins and the risk of dementia." Lancet 356: 1627-1631.
    Kahn, J. (2007). "Race in a Bottle." Scientific American(July 15).
    Kendler, K. S., C. O. Gardner, et al. (2002). "Towards a comprehensive developmental model for major depression in women." American Journal of Psychiatry 159: 1133-1145.
    Khoury, M. J., J. Little, M. Gwinn and J. P. Ioannidis (2007). "On the synthesis and interpretation of consistent but weak gene-disease associations in the era of genome-wide association studies." International Journal of Epidemiology 36: 439-445.
    Kirkwood, B. R. and J. A. C. Sterne (2003). Essential Medical Statistics. Malden, Blackwell.
    Korbin, J. E., C. J. Coulton, et al. (2000). "Neighborhood Views On The Definition And Etiology Of Child Maltreatment." Child Abuse & Neglect 24(12): 1509–1527.
    Krieger, N., J. T. Chen, et al. (2005). "Painting a truer picture of US socioeconomic and racial/ethnic health inequalities: The Public Health Disparities Geocoding Projec." American Journal of Public Health 95: 312-323.
    Krieger, N., J. T. Chen, et al. (2005b). "Lifetime socioeconomic position and twins' health: An analysis of 308 pairs of United States women twins." PLoS Med 2(7): e162.
    Kuh, D., Y. Ben-Shlomo, et al. (2003). "Life course epidemiology." Journal of Epidemiology and Community Health 57: 778-783.
    Lagakos, S. W. (2006). "The challenge of subgroup analysis--Reporting without distorting." New England Journal of Medicine 354: 1667-1669.
    Lawlor, D. A., S. Frankel, et al. (2003). "Smoking and Ill Health: Does Lay Epidemiology Explain the Failure of Smoking Cessation Programs Among Deprived Populations?" American Journal of Public Health 93(2): 266-270.
    Lawlor, D. A., G. Davey-Smith, et al. (2004). "Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?" The Lancet 363: 1724-1726.
    Lawlor, D. A., G. Davey-Smith, et al. (2005). "Life-Course Socioeconomic Position, Area Deprivation, and Coronary Heart Disease: Findings From the British Women's Heart and Health Study." American Journal of Public Health 95: 91-97.
    Lynch, J. and G. Davey-Smith (2005). "A Life Course Approach to Chronic Disease Epidemiology." Annual Review of Public Health 26: 1-35.
    Marcelli, E., C. Jencks, et al. (2005). "The Impact of Family Socioeconomic Status and Income Inequality on Stature in the United States." Paper for Meeting of the Population Association of America, Philadelphia, PA.
    Marcelli, E., D. M. Cutler, et al. (2006ms). "An Estimate of the Effects of Income Inequality, Racial Segregation, and Food Prices on Adult Obesity in the United States."
    Marmot, M. and R. G. Wilkinson (2001). "Psychosocial and material pathways in the relation between income and health: a response to Lynch et al " British Medical Journal 322: 1233-1236.
    Moffitt, T. E., A. Caspi, et al. (2005). "Strategy for investigating interactions between measured genes and measured environments." Archives of General Psychiatry 62(5): 473-481.
    Morris, C., Sen, A., Pierce, K. & Beckwith, J. (2007). "Deconstructing violence." GeneWatch, 20 (2): March 20, 2007. Council for Responsible Genetics. Retrieved on August 17, 2007 from
    Nelson, M. R., D. Liew, et al. (2005). "Epidemiological modelling of routine use of low dose aspirin for the primary prevention of coronary heart disease and stroke in those aged >=70." British Medical Journal 330: 1306-1311.
    Oakes, J. M. (2004). "The (mis)estimation of neighborhood effects: Causal inference for a practicable social epidemiology." Social Science & Medicine 58: 1929-1952.
    Ou, S.-R. (2005). "Pathways of long-term effects of an early intervention program on educational attainment: Findings from the Chicago longituidinal study." Applied Developmental Psychology 26: 478-611.
    Oxford, J. S., R. Lambkin, et al. (2005). " A hypothesis: the conjunction of soldiers, gas, pigs, ducks, geese and horses in northern France during the Great War provided the conditions for the emergence of the "Spanish" influenza pandemic of 1918-1919." Vaccine 23(7): 940-945.
    Paul, D. (1998). The history of newborn phenylketonuria screening in the U.S. Final Report of the Task on Genetic Testing. Baltimore, Johns Hopkins University Press: 1-13.
    PBS Home Video. (2004). "Killer flu" (video, in Healey library)
    Pearce, N. (1996). "Traditional epidemiology, modern epidemiology, and public health." American Journal of Public Health 86: 678-683.
    Petitti, D. B. and D. A. Freedman (2005). "Invited Commentary: How Far Can Epidemiologists Get with Statistical Adjustment?" American Journal of Epidemiology 162: 415-418.
    Pickles, A. and A. Angold (2003). "Natural categories or fundamental dimensions: On carving nature at the joints and the rearticulation of psychopathology." Development and Psychopathology 15: 529-551.
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