The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 3 Suggested solution
Question 1: Radioactivity in vegetables
a)
Construct the X-chart and S-chart for the radioiodine level in the first 52 weeks with
co

Objectives
Experimental design
After this session, students should be able to
CTCE6020 Session 3
Perform and interpret ANOVA test
Recognize F distribution and interpret F test
Eric Lau
Recognize different experimental designs
School of Public Health
Th

Objectives
Estimating effects: Alternative
approaches to reduce confounding
After this session, students should be able to
Reduce bias in estimating treatment effect in
CTCE6020 Session 4
nonexperimental study, using propensity score method
Estimate tre

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 4 Suggested solution
Analysis of patient satisfaction
a)
What is the sample size?
388
b)
How many subjects are included for the factor analysis?
[Analyze

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 4 Factor analysis / multivariate methods
Analysis of patient satisfaction
Introduction
Patient satisfaction is a personal evaluation of health care servi

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 1 Suggested solution
Question 1: Physical functioning in Hong Kong adolescents
a)
Fit a linear regression model including age, sex and birthplace to iden

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 2 Suggested solution
Question 1: Physical intervention to reduce influenza transmission
a)
Plot the average proportion of household members infected by i

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 3 Statistical process control / time series analysis
Question 1: Radioactivity in vegetables
The food safety office collects samples of vegetables weekly

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 1 Applied Regression
Question 1: Physical function in Hong Kong adolescents
A school-based study investigated if factors such as age, sex or place of bir

The University of Hong Kong
School of Public Health
CTCE 6020 Advanced Statistical Methods I
TUTORIAL 2 Experimental design / reduce confounding in estimating effects
Question 1: Physical intervention to reduce influenza transmission
A study investigated

2/8/2011
Applied regression I
Advanced Statistical Methods I
Irene WONG
CTCE 6020
CTCE 6020
2nd semester 2011
2nd semester 2011
Irene WONG
School of Public Health, HKU
Session 1
Overview
Course coordinators:
18.30 to 18.40 Course logistics, course
assessm

Question 1
a)
Assignment 3 (Suggested solution)
Construct the X chart and S chart for the first 40 samples. Write down the control limits
at 3 standard deviations. [3 marks]
X chart:
S chart:
The upper and lower control limits of X-chart are 27.32 and 10.

The University of Hong Kong
Department of Community Medicine
School of Public Health
Master of Public Health
Advanced Statistical Methods I
Factor analysis / multivariate methods
Assignment 4
(submitted on or before 12:00pm, May 5, 2011)
Apr 26, 2011
Intr

Assignment 2 (Suggested solution)
Comments on assignments:
Please note that SPSS procedures are NOT considered as part of answer in the assignment. Many
students did the same as the suggested solution of the tutorial to give SPSS procedure. We included
th

Assignment 4 (Suggested solution)
Question 1
Produce appropriate descriptive statistics and perform a factor analysis, and write up
three sections: (1) Methods of Analysis, (2) Results, and (3) Discussion. You should
clearly indicate how you carry out the

The University of Hong Kong
Department of Community Medicine
School of Public Health
Master of Public Health
Advanced Statistical Methods I
Applied regression
Assignment 1
(submitted on or before 12:00pm, Feb 28, 2011)
Feb 19, 2011
Prediction of flu case

The University of Hong Kong
Department of Community Medicine
School of Public Health
Master of Public Health
Advanced Statistical Methods I
Statistical control process / time series analysis
Assignment 3
(submitted on or before 12:00pm, Apr 11, 2011)
Apr

The University of Hong Kong
Department of Community Medicine
School of Public Health
Master of Public Health
Advanced Statistical Methods I
Experimental design / reduce confounding in estimating effects
Assignment 2
(submitted on or before 12:00pm, Mar 21

Assignment 1 (Suggested solution)
Question 1
Since influenza was a binary variable, binary logistic regression would be used. The base model was with
number of influenza cases as dependent variable with adjustment for all available explanatory factors.
Ta