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Table 3 Study methods and smoking legislative context

From: Perceptions of friendship, peers and influence on adolescent smoking according to tobacco control context: a systematic review and meta-ethnography of qualitative research

Author and year

Data collection methods

Analysis

Substance focus

Country and year of smoking ban

Synthesis category

Amos et al. (2007) [25]

Face to face single sex focus groups

Thematic

Smoking only

Scotland (UK) 2006

0–4 years before

Arora et al. (2010) [26]

Face to face focus groups

Thematic

Smoking and smoke-free tobacco

India no comprehensive ban

10 + years before

Baheiraei et al. (2018) [27]

Telephone semi-structured interviews

Thematic (constant comparative analysis/content analysis)

Smoking only

Iran 2007

After

Baillie et al. (2005) [28]

Face to face semi-structured interviews

Thematic (narrative enquiry)

Smoking only

Canada (British Columbia) 2008

5–9 years before

Craciun et al. (2008) [29]

Face to face semi-structured interviews

Thematic (content analysis)

Smoking only

Romania 2016

10 + years before

Denscombe et al. (2001) [30]

Face to face focus groups and semi-structured interviews

Thematic

Smoking only

England (UK) 2007

5–9 years before

Denscombe et al. (2001b) [31]

Face to face focus groups and semi-structured interviews

Thematic

Smoking only

England (UK) 2007

5–9 years before

Dijk et al. (2007) [32]

Face to face group interviews

Thematic

Smoking only

Netherlands 2008

5–9 years before

El Kazdouh et al. (2018) [33]

Face to face single sex focus groups

Thematic (inductive)

Substance use

Morocco no comprehensive ban

10 + years before

Fithria (2021) [34]

Face to face focus groups

Thematic (inductive content analysis)

Smoking only

Indonesia no comprehensive ban

10 + years before

Fraga et al. (2011) [35]

Face to face semi-structured interviews

Thematic (content analysis)

Smoking only

Portugal no comprehensive ban

0–4 years before

Haines et al. (2009) [36]

Face to face semi-structured interviews

Thematic

Smoking and other substances

Canada (Toronto) 2015

0–4 years before

Hong et al. (2015) [37]

Face to face semi-structured interviews and focus groups

Thematic (Colaixxi’s method)

Smoking only

Taiwan 2009

After

Ioannou et al. (2010) [38]

Face to face unstructured interviews

Thematic (content analysis/grounded theory)

Smoking only

Cyprus 2010

5–9 years before

Jafari (2022) [39]

Face to face semi-structured interviews

Thematic (content analysis)

Smoking only

Iran 2007

After

Johnson et al. (2003) [40]

Face to face semi-structured interviews (secondary analysis and primary data collection) + free pile and sort

Thematic

Smoking only

Canada (Vancouver) 2015

10 + years before

Lewis et al. (2013) [41]

Ethnography

Thematic (open coding approach)

Smoking only

UK (England) 2007

After

Milton et al. (2008) [42]

Face to face focus groups and semi-structured interviews

Thematic

Smoking only

UK (England) 2007

5–9 years before

Mishra et al. (2005) [43]

Face to face focus groups

Thematic

Tobacco in various forms

India, no comprehensive ban

10 + years before

Mitschke et al. (2008) [44]

Face to face focus groups

Thematic

Smoking only

Honolulu, Hawaii, USA 2006

0–4 years before

Mutaz (2020) [45]

Face to face focus groups

Thematic

Smoking only

Saudi Arabia, no comprehensive ban

10 + years before

Niknami et al. (2008) [46]

Face to face semi-structured interviews, focus groups and written narratives

Thematic (content analysis)

Smoking only

Iran 2007

0–4 years before

Nwafor et al. (2012) [47]

Face to face focus groups

Not stated clearly

Smoking only

Nigeria no comprehensive ban

10 + years before

Perez-Milena et al. (2011) [48]

Face to face focus groups

Content analysis

Smoking only

Spain 2011

0–4 years before

Peterson et al. (2019) [49]

Face to face focus groups

Thematic (constant comparison)

Smoking only

Uruguay 2006

After

Plano Clark et al. (2002) [50]

Face to face focus groups

Thematic

Primarily smoking, but also included smokeless tobacco

USA (Newbraska) 2009

5–9 years before

Plumridge et al. (2002) [51]

Face to face focus groups

Thematic

Smoking only

New Zealand 2004

5–9 years before

Povlsen et al. (2018) [52]

Face to face single sex focus groups

Thematic (content analysis)

Smoking only

Nepal 2011

After

Rothwell et al. (2011) [53]

Face to face focus groups

Thematic

Smoking and chewing tobacco

USA (Utah) 2007

0–4 years before

Sanchez Martinez et al. (2008) [54]

Face to face semi-structured interviews

Thematic (content analysis)

Smoking only

Mexico 2008

10 + years before

Schreuders et al. (2019) [55]

Face to face focus groups and semi-structured interviews

Thematic (framework analysis)

Smoking only

The Netherlands 2008

After

Stewart-Knox et al. (2005) [56]

Face to face semi-structured interviews

Thematic (content analysis/grounded theory)

Smoking only

UK (Northern Ireland) 2007

5–9 years before

Stjerna et al. (2004) [57]

Face to face single sex focus groups

Thematic (inductive/discursive analysis)

Tobacco, including snuff

Sweden 2005

10 + years before

Talip et al. (2016) [58]

Face to face focus groups

Thematic

Smoking only

Brunei 2017

0–4 years before

Tamvakas et al. (2010) [59]

Face to face semi-structured interviews with small groups (2/3 people)

Thematic

Smoking only

Greece 2010

0–4 years before

Tohid et al. (2011) [60]

Face to face focus groups and semi-structured interviews

Thematic

Smoking only

Malaysia 2019

10 + years before

Treacy et al. (2007) [61]

Face to face focus groups and semi-structured interviews

Thematic (inductive analysis)

Smoking only

Ireland 2004

5–9 years before

Turner et al. (2006) [62]

Face to face single sex focus groups

Thematic

Smoking only

UK (Scotland) 2006

0–4 years before

Vasquez et al. (2018) [63]

Face to face focus groups

Thematic

Smoking only

USA (Texas) No comprehensive ban

10 + years before

Woodgate et al. (2015) [64]

Face to face semi-structured interviews, participatory method ‘Photovoice’ and focus groups

Thematic

Smoking only

Canada (Western Canadian Province, unclear which) 2004, 2005, 2008, 2008

After

Yuksel et al. (2005) [65]

Face to face focus groups

Thematic and content analysis

Smoking only

Turkey 2009

10 + years before