Home

Research

Teaching

Presentations

Publications

Links


CMDA
(passwd required)

Diet/Trt/Time Experiment
(passwd required)

Irr/Carc/Time Experiment
(passwd required)


EPI-204-SPRING 2009
EPI 204 -- (4 units) -- CRN 73025 --
Lecture Tue 11:00AM-1:00PM, Thu 12:10-1:00PM--171 Schalm
Lab/Dis. Thu 11:00-11:50AM SLB 2020


Contact information
Instructor: Danh Nguyen, Ph.D.
Office: MS1C RM 150
Office hours: Tue 10-11, Wed Wed 2:30-4:30 (and by appointment)
Email: See syllabus

TA: Dr. Liz VanWormer
Office hours: Tue 1-2, Thu 3-4 (and by appointment)
Office: outside MS1C #150
Email: See syllabus

Course syllabus: [PDF]


Cox Proportional Hazards Regression - Lecture example on NSCLC stage migration
Cox PH Regression
SAS code: PHREG sas code [phreg_sas.txt]

Files for HW4
Data, codebook, SAS code for HW4: Cox PH regression
UIS Data: data UIS Codebook: code book SAS code: SAS code to read data

Cox Proportional Hazards Regression
Cox PH Regression
SAS code: PHREG sas code [phreg_sas.txt]
SAS code: PHREG & adjusted survival curves sas code [phreg_surv_curve_sas.txt]

Kaplan-Meier, Log-rank test
Kaplan-Meier, Log-rank test
SAS code: sas code [km_liz.txt]

C. Poisson Regression
SAS code: sas code [poisson_sas.txt]
SAS output *.lst file: output (lst) file
Nursing home data: [HW3 DATA] (Columns in data set: Unit, BED, TDAYS, PCREV, NSAL, FEXP, RURAL; see HW description for more details of data set.)

A. Multinomial LR
Data: ME data [meexpdat.txt][HW3 DATA]
Data Description: data description [meexpdocs.txt]
SAS code: sas code [meexp_sas.txt]
SAS output *.lst file: output (lst) file

B. Proportional odds LR
Data: see low birth weight data
Data Description: see low birth weight data
SAS code: sas code [po_sas.txt]
SAS output *.lst file: output (lst) file

A. 1:1 Matched case-control example
Data: [DATA] low birth weight 1:1 matched data [lowbwt11data.txt]
Data Description: data description [lowbwt11docs.txt]
SAS code: sas code [lbw_matched_1_1_sas.txt]
SAS handout/output given in lecture SAS output/handout for class [PDF]

Week 5: Thu 4.30.09 Midterm (11-1pm), no lab/discussion & lecture

Diagnostic plots and goodness-of-fit
Data and description: same low birthweight data and description below.
SAS codes for Logistic regression diagnostics plots
SAS code: sas code [lbw_plots_save_sas.txt]
Handout for LR plots: Word doc [diagnostic.doc]
SAS output for Hosmer-Lemeshow goodness of fit test: sas code [lbw_plots_save_lst.txt]

Extra practice problems for LR likelihood: [PDF]

Estimation/hypothesis testing and model selection
Data and description: same low birthweight data and description below.
A. Wald test using proc IML:
SAS code: sas code [wk4_SAS_IML_Wald_test.doc]
B. SAS codes and output for using contrast statements for hypothesis testing and LRT:
SAS code: sas code [lbw_constrast_sas.txt]
SAS output *.log file: log file
SAS output *.lst file: output (lst) file
SAS handout 2 SAS output/handout for class
C. SAS codes and output using forward and stepwise selection :
SAS code: sas code [lbw_selection_sas.txt]
SAS output *.log file: log file
SAS output *.lst file: output (lst) file

Low birth weight data, logistic regression
Data: low birthweight data [lowbwdata2.txt]
Data Description: data description [lowbwt_data_desc.txt]
SAS code: sas code [lbw_sas.txt]
SAS output *.log file: log file
SAS output *.lst file: output (lst) file
SAS handout 1 SAS output/handout for class
Lab/Disc. 3: CORRECTED VERSION of SAS codes and output [MS Word]
Lab/Disc. 3: SAS codes and output [MS Word] [RTF]

HW2: Logistic regression ...
Data: ICU data [icudata2.txt]
Data Description: data description [icu_data_desc.txt]
Data Description: sas code to read in ICU data [HW2_Q2_read_data_sas.txt]
HW 2 (due Thu 4/23 by 5pm can give to Liz) Given out in class (Tue 4/14)

HW1: Linear regression review ...
HW 1-part 1 (due Tue 4/14) hw1 part 1 [pdf] Posted Mon 4/6
HW 1-part 2 (due Tue 4/14) hw1 part 2 [pdf]
Data -- see materials for week 1 discussion below

Birthweight/PCB data
Data: birthweight-pcb data [bw.txt]
Data Description: data description [bw_data_desc.txt]
SAS code: SAS code [read_data_sas.txt]
SAS output *.log file: log file
SAS output *.lst file: output (lst) file
Lab/Disc. 2: SAS codes [Word]
Lab/Disc. 1: SAS codes [text]

Week 1: Review
Review materials - lecture slides [PDF]


Computing resources/manuals:
SAS User's guide to:
PROC LOGISTIC Chap.39
PROC GLM Chap.30
PROC PHREG Chap.49
PROC MIXED Chap.41

Some Links for SAS plots
SAS plot examples