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Table 2 Operationalisation and Statistical Analysis of Reviewed Articles

From: Perceived effectiveness of pictorial health warnings on changes in smoking behaviour in Asia: a literature review

Author

Country

Study Period

Study Mehod

Study Design

Data Collection Method

Respondent Selection Method

Respondent

Response/retention Rate

Statistical Analysis

Fathelrahman et al.

Malaysia

May to December 2008

Quantitative

A two-group randomized design (control and intervention groups)

Self-administered questionnaire

Population based

140 male Malaysian Adult

80%

Independent sampe t-test, Chi-square or McNemar statistics, multiple logistic and linear regressions with p < 0.05

Fong et al.

China

January to February 2009

Quantitative

A city X sex (two categories) X participant group (adult smokers, adult non-smokers, youth)

Self-administered questionnaire

Population based

1169 adult and youth

–

Chi-square test, a mixed-model and post hoc contrasts

Zaidi et al.

Pakistan

January to February 2010

Quantitative

Experimental

Self-administered questionnaire

Selected Schools

388 high school students

–

Friedman test, Wilcoxon Signed Ranks Test, and Mann Whitney U test with p < 0.05

Hawari et al.

Jordan

 

Quantitative

Cross-sectional Survey

Self-administered questionnaire

Population based

450 students

79.78%

Chi-square test

Yong et al.

Thailand

Wave 1: Jan-March 2005; Wave 2: July-Sept 2006; wave 3: Jan-march 2008

Quantitative

Cohort survey

Face-to-face interview

a stratified multistage sampling design

3067

78% and 83%

Logistic regression

Malaysia

Wave 1: Jan-March 2005; wave 2: Agst 2006-March 2007; wave 3: March-Sept 2008

3220

44% and 59%

Behera et al.

India

August - Oct 2012

Quantitative

Cross-sectional

Face-to-face interview

Selected hospital

308

–

Chi-square test

Tugrul, Tugba Orten

Turkey

2010

Quantitative

Survey

  

360 undergraduate students

95%

Regression

Awaisu et al.

Qatar

Nov 2011-Jan 2012

Quantitative

Cross-sectional

Face-to-face interview

Selected public places

500

–

chi-square or Fisher’s exact

Wu et al.

China

 

Quantitative

Cross-Sectional

Face-to-face interview

Multi-stage sampling design

202

–

Chi-square tests

Sychareun et al.

Lao PDR

 

Quantitative and Qualitative

Cross-Sectional and Indepth Interview

Self-administered questionnaire and interview

Popolation based and Purposive sampling

1360 participants and 15 policy makers

–

chi-square or Fisher’s exact, multiple logistic regression

Elton-Marshall et al.

China

Wave 1: April- Agst 2006; Wave 2: Oct 2007 to Jan 2008; Wave 3: May to October 2009

Quantitative

Survey

Interview

Multistage cluster sampling at wave 1

6513 adult smokers

81.6% and 80.4%

Generalised Estimating Equations (GEE) with 95% CI

Malaysia

Wave 3: Feb-Sept 2008; wave 4: July-Nov 2009

Quantitative

Cohort survey

Thelephone and face-to-face interveiws

a stratified multistage sampling design

2883 adult smokers

61%

 

Auemaneekul et al.

Thailand

July to August 2012

Quantitative and Qualitative

Cross-sectional and FGD

Self-administered questionnaire

multistage stratified random sampling

1239

–

Content analysis, descriptive and odds ratios

Dien et al.

Indonesia

June 2014

Quantitative

Survey

Face-to-face interview

Random sampling

1177

–

t-tests

Mutti et al.

India

10 April-6 August 2012

Quantitative

Experimental (pre-post test)

Face-to-face interview

Population based

1060 adults and 1001 youths

98.94%

Chi-square tests (categorical variables), one-way analysis of variance and t-tests (continuous variables)

Bangladesh

9 May-18 June 2012

  1. Empty cells indicate the component was not identified