Class schedule (subject to change)
| Biostatistics and Research Design in Dentistry (DENS 580) |
| Time: (promptly) at 12:30 to 1:45 (or earlier). |
| Location: Perkinson 3120 (Lutz conference room); except the first meeting which will be in Lyons A012 (Basement conference room) |
| 30-Aug |
| Orientation and Overview |
| Meet in Lyons A012 (basement) |
| Handouts: |
| General Course Information |
| Topic schedule (this document) |
| Bibliography |
| Concept papers, what's expected |
| You will also need: |
| VCU School of Graduate Studies, Theses and Dissertation Manual |
| www.library.vcu.edu/preservation/theses.html |
| see especially "formatting tips" and "template" in MSWord format. |
| Alexander Fellowship information (due March 1) |
| go to: http://www.dentistry.vcu.edu/about/research/ |
| download the "purpose and eligibility" and the "application" |
| Author guidelines for: |
| Journal of Endodontics |
| www.elsevier.com/wps/find/journaldescription.cws_home/707230/authorinstructions |
| Pediatric Dentistry |
| www.aapd.org/publications/Instructions.pdf |
| Journal of Periodontology |
| www.joponline.org/userimages/ContentEditor/1124388816475/Instructions_to_Authors.pdf |
| American Journal of Orthodontics & Dentofacial Orthopedics |
| http://journals.elsevierhealth.com/periodicals/ymod/authorinfo |
| 1-Sep |
| Study Designs in Medical Research |
| Meet in Perkinson 3120 (Lutz conference room) behind the Irish conference room, Perkinson 3116 |
| Reading assignment: |
| Chapter 2, “Study designs in medical research” in B Dawson, RG Trapp (2004) Basic & Clinical Biostatistics, 4th Edition. |
| Note on reading assignments: When a paper or book chapter is assigned, graduate students are expected 1) to have read the item before the class period, 2) to bring the item to class, 3) to come prepared with questions about topics that are unfamiliar or confusing, and 4) to participate in the in-class discussion of the topics. |
| Handouts given out in class: |
| Study Designs |
| 6-Sep |
| Reading and Assessing the Literature |
| Reading assignment: |
| Harrison JE. Evidence-based orthodontics—how do I assess the evidence? J Orthod 2000; 27. |
| also skim: Chapter 13, “Reading the Medical Literature” in Dawson-Trapp. |
| Handouts: |
| How to Critique Papers, How to Participate in a Paper Critique |
| 8-Sep |
| Recognizing Sources of Bias in the Literature |
| Reading assignment: |
| Hartman JM, Forsen JW, Jr., Wallace MS, Neely JG. Tutorials in clinical research: part IV: recognizing and controlling bias. Laryngoscope 2002; 112:23-31. |
| also see the sections beginning on page 335, “Bias related to subject selection” in Dawson-Trapp; continuing thru “Blinding” on page 340. |
| 13-Sep |
| Overview of Statistical Methods, Summarizing Data |
| Reading assignment: |
| K.R. Baumgardner (1997) “A review of key research design and statistical analysis issues,” Oral Surgery Oral Medicine Oral Pathology, 84(5), 550-556. |
| Handouts: |
| Re: Baumgardner, and Summary of Statistical Analysis Methods |
| Introduction to Biostatistics, Summarizing and Displaying Continuous Data |
| Reading assignment: |
| Chapter 3 “Summarizing data …” in Dawson-Trapp up to but not including “Summarizing nominal and ordinal data with numbers” on page 40. |
| Handout: |
| Descriptive Statistics for Continuous Data |
| 15-Sep |
| No class |
| Endo unavailable |
| 20-Sep |
| Summarizing and Displaying Nominal Data |
| Reading assignment: |
| Chapter 3 “Summarizing data …” in Dawson-Trapp starting with “Summarizing nominal and ordinal data with numbers” on page 40 thru “Tables and graphs for nominal and ordinal data” on page 47. The section on “adjusting rates” can be skimmed (pages 44-46). |
| Handout: |
| Descriptive Statistics for Nominal Data. |
| Estimation and confidence intervals, hypothesis testing, significance levels, power |
| Reading assignment: |
| Chapter 5 “Research Questions about One Group” thru section 5.4.2 in Dawson-Trapp. |
| Handout: |
| Research questions about one group |
| 22-Sep |
| An Example of a Paper Critique |
| Reading assignment: |
| CL Bell, et. All "The immediate placement of dental implants into extraction sites with periapical lesions: A retrospective chart review". 2011 Journal of Oral and Maxillofacial Surgery 69:1623-1627. |
| Faculty will stand in as “graduate students assigned to critiques a paper”. They will lead the discussion of this paper—just as you will with future papers (See “How to Critique Papers”). |
| Assignment: |
| Come prepared with at least one question regarding the paper—see “How to Participate in a Paper Critique”. Since this an “example critique”, on this occasion your participation will not be graded. |
| 27-Sep |
| Paper Critiques |
| Reading assignment: |
| Paper 1 - Sorensen and Martinoff. “Clinically significant factors in dowel design.” 1984. Journal of Prosthodontic Dentistry 52:28-35. |
| Paper 2 - West et al. Changes in the craniofacial complex from adolescence to midadulthood: A cephalometric study. 1999 American Journal of Orthodontics and Dentofacial Orthopedics 115:521-532. |
| Assignments: |
| See “How to Critique Papers" |
| Abdul-Nabi, Bhatti, Ha will lead a discussion of 1 (Sorensen). |
| Babb, Doan, Hay will lead a discussion of 2 (West). |
| 29-Sep |
| No class |
| Ortho unavailable |
| 4-Oct |
| Proportions and Contingency Tables |
| Reading Assignment: |
| Chapter 6 “Two separate groups” in Dawson-Trapp (only the sections on contingency tables) |
| Note: Students will sign up for their presentations beginning on 20-Oct |
| 6-Oct |
| Use of Humans and Animals in Research |
| Reading assignment: |
| The World Medical Association Declaration of Helsinki |
| (download from: http://www.wma.net/en/30publications/10policies/b3/ ) |
| Assignment (due before Thanksgiving): |
| Complete training for biomedical researchers human subjects protection at: www.research.vcu.edu/irb/education.htm. Down at the bottom of this page, you’ll see “Required human subjects education: Click here” and the link: www.citiprogram.org. |
| When the training is complete, you will receive a “diploma”—print out multiple copies and turn in one copy. |
| 11-Oct |
| Critiques: Proportions and Contingency Tables |
| Reading Assignment: |
| Paper 3 by Lindauer et al.. Paper 4 by Jackson et al. |
| Assignment: |
| Bakuri, Eppright, Hodgson will lead a discussion of 3 (Lindauer). |
| Merrell, Shreck will lead a discussion of 4 (Jackson). |
| All will participate in the discussion. |
| 13-Oct |
| Comparing means (t-test) |
| Reading assignment: |
| Chapter 6, “Two separate groups”, the section on comparing means |
| 18-Oct |
| Critiques: Comparing means |
| Reading Assignment: |
| Paper 5 by Ziebert et al. Paper 6 by Farik et al. |
| Assignment: |
| McEntire, Rost, Smart will lead a discussion of 5 (Ziebert). |
| Abdul-Nabi, Sarao, Peters will lead a discussion of 6 (Farik). |
| 20-Oct |
| Concept papers due, Begin Discussion of concept papers |
| Handout: |
| See “Concept Papers, what’s expected” |
| For the next four class periods, four students will present their proposed research concepts. Each will have 18 minutes—plan on about a 12-15 minute presentation and then open it to questions, comments, suggestions from your peers for up to 5 minutes. Note that purpose of this presentation is two-fold: 1) for the presenter to get useful feedback to improve the research, and 2) for the students in the audience to gain further experience in critiquing research. |
| We’ll need something visual to work from. Either bring 18 copies of your concept paper or have powerpoint handouts. |
Presenters (starting at 12:30): Hodgson, Sarao, Eppright, Peters |
25-Oct |
Discussion of concept papers |
Presenters (starting at 12:30): Hay, McEntire, Shreck, Rost |
27-Oct |
Discussion of concept papers |
Presenters (starting at 12:30): Doan, Merrell, Babb, Abdl-Nabi |
1-Nov |
Discussion of concept papers |
Presenters (starting at 12:30): Smart, Ha, Bhatti, Bakuri |
| 3-Nov |
| No class |
| Ortho, Pedo unavailable |
| 8-Nov |
| No class |
| Best unavailable |
| 10-Nov |
| Critiques: Comparing means; Building a database |
| Reading Assignment: |
| Paper 7 by Norton |
| Assignment: |
| Babb, Bhatti, Ha will lead a discussion of 7 (Norton). |
| Creating an Excel database |
| Reading: none. Presented by Dr. Best |
| 15-Nov |
| No class |
| Perio unavailable |
| 17-Nov |
| Review of Methods and ANOVA |
| Reading assignment: Baumgardner and Chapter 7, “…comparing three or more groups” |
| Correlation and regression |
| Reading assignment: Chapter 8, “Relationships among variables… |
| 22-Nov |
| Critiques of Papers |
| Assignment: |
| Bakuri, Doan, Hay will lead a discussion of 8 (Yee). |
| Hodgson, Merrell, Shreck will lead a discussion of 9 (Johnson). |
| All discuss |
| 24-Nov |
| No Class |
| Thanksgiving |
| 29-Nov |
| Critiques of Papers |
| Assignment: |
| Eppright, McEntire, Smart will lead a discussion of 10 (Gapski). |
| Abdul-Nabi, Sarao, Rost will lead a discussion of 11 (Phrukkanon). |
| 1-Dec |
| No Class |
| Chapter 1 of Thesis Due |
| No discussions, just eMail me your draft thesis TO: ALBest@vcu.edu |
| Assignment: |
| Written literature review for research project due. (complete "Introduction" chapter; begin "Methods") |
| (See “Concept Papers, What’s Expected”.) What’s due is the first draft of your thesis up to and including the Introduction section (including full lit review, plus specific aims), and a perfectly formatted bibliography. You must also begin your methods section including at least a rough idea of how you’ll perform the study. |
| This document must be formatted just as your final thesis will be formatted. |
| 6-Dec |
| Equivalence or “just as good as” Claims |
| Reading assignment (everyone): |
| Jones, Jarvis & Lewis “Trials to assess equivalence …” BMJ (1996). Dr. Best will present an overview of this material. Then we discuss the following paper: |
| Assignment: |
| Bhatti, Eppright, Hay will lead a discussion of 14 (Burns). |
| All discuss |
| 8-Dec |
| [placeholder in case we need this class] |
| End of Fall Semester Classes |
| Classes resume on Tuesday, 17-Jan |
| Consultations with Dr. Best to finalize database design, and statistical methods |
| 17-Jan |
| 19-Jan |
| 24-Jan |
| 26-Jan |
| (No class for students who are not signed up for a “slot”) |
| Sign up to finalize your research proposal. Bring your proposal, and any associated material [such as ‘scoring sheets’ or proposed excel spreadsheets] |
| 31-Jan |
| Logistic regression |
| Reading assignment: “Logistic Regression” in Chapter 10, “Statistical methods for multiple variables” |
| 2-Feb |
| Logistic regression paper critiques |
| Babb, Peters, Smart will lead a discussion of 12 (Baughan). |
| Bakuri, Ha, Merrell will lead a discussion of 13 (Cutler). |
| 7-Feb |
| Survival analysis |
| Reading assignment: Chapter 9 “About survival …” |
| 9-Feb |
| Critique of Survival papers |
| Doan, McEntire, Sarao will lead a discussion of 15 (Becker). |
| Peters, Rost will lead a discussion of 16 (Bogacki). |
| 14-Feb |
| Sensitivity and Specificity; Measurement error, agreement |
| Reading assignment: Chapter 12, “Measuring the accuracy of diagnostic procedures …” and Chapter 5, “Measuring agreement” in Dawson-Trapp |
| Assignment: |
| Hodgson, Shreck will lead a discussion of 17 (Lanning). |
| 16-Feb |
| Meta-Analysis and Critical Reviews |
| Reading Assignment |
| "Meta-Analysis" in Chapter 10 of Dawson-Trapp, starting on page 267- to 271 |
| Assignment: (all read and be prepared to discuss) |
| Gunsolley, JC. A meta-analysis of six-month studies of antiplaque and antigingivitis agents. 2006. JADA. 137(12):1649-57. |
| Final Written Research Proposal due. |
| this is the last class |