# Presentation: 163357

## VASA VA Statisticians’ Association  

- HSRD Breakfast Session
- 02/23/2007
- 7:00am

## VASA Officers 	

- President:  **Xiao-Hua Andrew Zhou**
- VA Puget Sound Health Care System
- Vice President:  **Susan Loveland**
- VA New England Health Care System
- Program Committee Chair:  **Roslyn Stone**
- VA Pittsburgh Health Care System
- Acting Secretary:  **Dawn Sakaguchi**
- VA Puget Sound Health Care System

## Mark Glickman - VA New England Health Care System 
Stephen Hillis- CRIISP, Iowa City
Kelvin Lee- Palo Alto Cooperative Studies
Martin Lee – VA Greater Los Angeles Health Care System 
Susan Loveland - VA New England Health Care System 
Cindy Christiansen –VA Bedford Health Care System
Roslyn Stone - VA Pittsburgh Health Care System
Linda Young- North Florida/South Georgia Health Care System
Xiao-Hua Andrew Zhou - VA Puget Sound Health Care System 

- Mark Glickman - *VA New England Health Care System** *
- Stephen Hillis- *CRIISP, Iowa City*
- Kelvin Lee-* Palo Alto Cooperative Studies*
- Martin Lee – *VA Greater Los Angeles Health Care System *
- Susan Loveland - *VA New England Health Care System*
- Cindy Christiansen –*VA Bedford Health Care System*
- Roslyn Stone - *VA Pittsburgh Health Care System*
- Linda Young-* **North Florida/South Georgia Health Care System*
- Xiao-Hua Andrew Zhou - *VA Puget Sound Health Care System *

## Promote & disseminate statistical methodological research relevant to VA studies;  

Facilitate communication & collaboration among VA-affiliated statisticians;  

Promote good statistical practice;  

Increase participation & visibility of statisticians; 
VA HSR&D 
ASA Joint Statistical Meetings   

Increase participation of statisticians in VA research merit review.  

- Promote & disseminate statistical methodological research relevant to VA studies;
- Facilitate communication & collaboration among VA-affiliated statisticians;
- Promote good statistical practice;
- Increase participation & visibility of statisticians;
- VA HSR&D
- ASA Joint Statistical Meetings
- Increase participation of statisticians in VA research merit review.

## 66 current members
VASA Members in the 15 Centers of Excellence
Ann Arbor, MI: 1 member
Bedford, MA: 4 members
Boston, MA: 5 members
Durham, NC: 6 members
Gainesville, FL: 4 members
Hines IL: 2 members
Houston, TX: 6 members

- 66 current members
- VASA Members in the 15 Centers of Excellence
- Ann Arbor, MI: 1 member
- Bedford, MA: 4 members
- Boston, MA: 5 members
- Durham, NC: 6 members
- Gainesville, FL: 4 members
- Hines IL: 2 members
- Houston, TX: 6 members

## VASA Members in the 15 Centers of Excellence
Indianapolis, IN: 1 member
Iowa City, IA: 1 member
Little Rock, AR: 1 member
Minneapolis, MN: 5 members
Palo Alto, CA: 4 members
Pittsburg, PA: 9 members
Seattle, WA: 1 member
Sepulveda, CA: 1 member

- VASA Members in the 15 Centers of Excellence
- Indianapolis, IN: 1 member
- Iowa City, IA: 1 member
- Little Rock, AR: 1 member
- Minneapolis, MN: 5 members
- Palo Alto, CA: 4 members
- Pittsburg, PA: 9 members
- Seattle, WA: 1 member
- Sepulveda, CA: 1 member

## 
VASA website http://www.hsrd.research.va.gov/for_researchers/vasa/
Mission
Current and upcoming VASA activities
Contact information

**VASA website** _[http://www.hsrd.research.va.gov/for_researchers/vasa/](http://www.hsrd.research.va.gov/for_researchers/vasa/)_
- Mission
- Current and upcoming VASA activities
- Contact information

## JSM 2006- Seattle, WA
Section on Health Policy
Statistical Issues in Racial/Ethnic Disparities Research -Roslyn A. Stone and Huanyu Chen and Xiangtan Xu 
The Use of Hierarchical Linear Models To Evaluate Methods for the Delivery of Primary Care – Martin Lee
Understanding Variation in Patient Safety Measures in the VA: How Bayesian Methods Can Help – Cindy Christiansen
A Decision-Theoretic Approach to Identifying Future High-Cost Patients- Kenneth Pietz and Margaret M. Byrne and Laura A. Petersen  

- JSM 2006- Seattle, WA
- Section on Health Policy
- Statistical Issues in Racial/Ethnic Disparities Research -Roslyn A. Stone and Huanyu Chen and Xiangtan Xu
- The Use of Hierarchical Linear Models To Evaluate Methods for the Delivery of Primary Care – Martin Lee
- Understanding Variation in Patient Safety Measures in the VA: How Bayesian Methods Can Help – Cindy Christiansen
- A Decision-Theoretic Approach to Identifying Future High-Cost Patients- Kenneth Pietz and Margaret M. Byrne and Laura A. Petersen

## HSR&D National Meeting 2007
Workshop: Applications of Item Response Theory Methodologies in Monitoring Healthcare through the Continuum of Care – Velozo
Statistical Methods
Multiple Imputation of Right-Truncated Laboratory Data- Cheng
Checking for Seasonal Changes in Patient Outcomes- Christiansen 
Risk Adjustment in VA Populations - A Method for Partial Recalibration- Loveland
Using Mixed Effects Logistic Regression Models for the Analysis of Blood Pressure Control in a Clustered and Longitudinal Trial- Olsen
Risk Factors Predicting Pressure Ulcers in Veterans with Spinal Cord Injuries and Disorders: An Application of Generalized Ordinal Logistic Regression- Smith

- HSR&D National Meeting 2007
**Workshop:** Applications of Item Response Theory Methodologies in Monitoring Healthcare through the Continuum of Care – Velozo
**Statistical Methods**
- Multiple Imputation of Right-Truncated Laboratory Data- Cheng
- Checking for Seasonal Changes in Patient Outcomes- Christiansen
- Risk Adjustment in VA Populations - A Method for Partial Recalibration- Loveland
- Using Mixed Effects Logistic Regression Models for the Analysis of Blood Pressure Control in a Clustered and Longitudinal Trial- Olsen
- Risk Factors Predicting Pressure Ulcers in Veterans with Spinal Cord Injuries and Disorders: An Application of Generalized Ordinal Logistic Regression- Smith

## JSM 2007- Salt Lake City, UT
Statistical Research in the VA Healthcare System
Determining sample sizes for estimating and comparing item parameters from the Rasch model – Linda Young
Impact of imbalance on variance estimation in 2-level logistic models-Huanyu Chen
A comparison of methods to impute missing race in VA administrative data- Maria Mor
Estimating concordance for a hazard scale in the presence of time-varying data- Peter Richardson
Analyzing health care cost data in the presence of heterogeneous patients:  wouldn’t three pieces be better than one?- James Burgess

- JSM 2007- Salt Lake City, UT
- Statistical Research in the VA Healthcare System
- Determining sample sizes for estimating and comparing item parameters from the Rasch model – Linda Young
- Impact of imbalance on variance estimation in 2-level logistic models-Huanyu Chen
- A comparison of methods to impute missing race in VA administrative data- Maria Mor
- Estimating concordance for a hazard scale in the presence of time-varying data- Peter Richardson
- Analyzing health care cost data in the presence of heterogeneous patients:  wouldn’t three pieces be better than one?- James Burgess

## 2008 7th International Conference on Methodological Issues in Health Services and Outcomes Research
It will be held in Philadelphia at the Doubletree Suites Hotel
January 17-18, 2008
2008 HSR&D National Meeting

- 2008 7th International Conference on Methodological Issues in Health Services and Outcomes Research
- It will be held in Philadelphia at the Doubletree Suites Hotel
- January 17-18, 2008
- 2008 HSR&D National Meeting

## VASA contact information: 
Xiao-Hua Andrew Zhou 
Andrew.Zhou@va.gov 
(206) 277-3588 

- VASA contact information:
- Xiao-Hua Andrew Zhou
- _[Andrew.Zhou@va.gov](mailto:Andrew.Zhou@va.gov)__ _
- (206) 277-3588