| Beyond the general linear model | March, 2003 |
| Presented at the Center for Intervention and Prevention Research on HIV and Drug Abuse, Columbia University School of Social Work |
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| Models for count data | March, 2003 |
| Presented at the NDRI Statistics Support Group |
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| Logistic regression | December, 2002 |
| Presented at the NDRI Statistics Support Group |
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| Moderating and mediating variables: Conceptual and statistical issues | August, 2002 |
| Presented at the NDRI Statistics Support Group |
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| Interpreting interactions | April, 2002 |
| Presented at the NDRI Statistics Support Group |
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| Bootstrapping: An Introduction | February, 2002 |
| Presented at the NDRI Statistics Support Group |
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| Graphics for statistical analysis | September, 2003 |
| Presented at the NDRI Statistical Support Group |
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| Strategies for research with small samples | April, 2003 |
| Presented at the NDRI Statistics Support Group |
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| Logistic regression: Dichotomous outcomes | September, 2004 |
| Presented at the New York Area SAS Users Group |
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| Statistical graphics: A guide to their construction and use | October, 2004 |
| Presented at the Center for Interdisciplinary Research on AIDS, Yale University |
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| Logistic regression: Ordinal and nominal outcomes | December, 2004 |
| Presented at the New York Area SAS Users Group |
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| A LaTeX fledgling struggles to take flight | June, 2005 |
| Presented at the PracTex confernce |
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| Logistic regression: Ordinal and nominal variables | September, 2005 |
| Presented at the Northeast Area SAS Users Group |
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| Power analysis for grant proposals | June, 2004 |
| Presented at the NDRI Statistics Support Group |
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| Stopping stepwise: Why stepwise variable selection methods are bad, and what you shoud use | March, 2008 |
| Presented at SAS Global Forum |
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| Single linkage cluster analysis for outlier detection in hypervariate data | June, 2008 |
| Presented at the Annual Meeting of the Classification Society |
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| PROC LOGISTIC: Traps for the unwary | Sept, 2008 |
| Presented at the Northeast SAS Users Group annual meeting |
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