Author (year) | Country | Taxation at time of study | Study design | Data collection method | Samplea | Recruitment/setting | Sample size | |
---|---|---|---|---|---|---|---|---|
Isett (2015) [28] | US | No | Qualitative | Semi-structured interviews | Political and public | Individuals involved in the SSBs policy initiative (past and present public officials, key advocates from the nonprofit sectorb) | New York City | 27 (6b) |
Moise (2011) [29] | Mexico | No | Qualitative | Semi-structured interviews | Political and public | Key informants (from Ministry of Health and civil societyb) | Purposive sample | 16 (3b) |
Nixon (2015) [30] | US | No | Qualitative | News reports | Political and public | Published between Nov 2011 and Jan 2013 (Richmond and El Monte) and Nov 2012 and Jan 2014 (Telluride) on soda tax initiatives | Nexis news database and online archives of news sources, Richmond, El Monte and Telluride | 378 |
Signal (2018) [31] | New Zealand | No | Qualitative | Semi-structured interviews | Political and public | Key stakeholders (politicians, bureaucrats and consumer representativesb) | Purposive sample | 22 (8b) |
Tamir (2018) [32] | Israel | No | Qualitative | Semi-structured interviews | Political and public | Stakeholders (legislators, policy makers, regulators and public representativesb) | Purposive sample | 39 (17b) |
Lloyd-Williams (2014) [33] | Fourteen European countriesd | Yes in Denmark, Finland, France and Hungary | Qualitative | Semi-structured interviews | Political | National experts from 14 European countries (senior policy-makersb) | Purposive sample | 71 (12b) |
Purtle (2018) [34] | US | No | Qualitative | Semi-structured interviews | Political | Key informants closely involved with the SSBs tax policymaking process (city councilpersons, city agency officialsb) | Philadelphia | 9 (6b) |
Thow (2011) [35] | Four Pacific countriese | Yes | Qualitative | Semi-structured interviews | Political | Stakeholders (politicians and policy makers from both health and financeb) | Snowball sample, Fiji, Samoa, Nauru and French Polynesia | Not reported |
Chan (2009) [36] | China | No | Qualitative | Focus groups | Public | Eighth and ninth grade adolescents (13–15 years) | Purposive sample, Hong Kong | 22 |
Francis (2017) [37] | Australia | No | Qualitative | Group interviews | Public | Young people (12–25 years) | Convenience sample of young people attending one youth group and two high schools, Perth | 41 |
Giabbanelli (2016) [38] | US | Pre- and post-implementation period | Qualitative | Reader comments | Public | Comments on SSBs taxes in Berkeley and San Francisco in news reports published between 1 Jan 2014 and 31 Jan 2015 | LexisNexis database, large U.S. daily newspapers and newspapers with significant readership in Berkeley or San Francisco, California | 3864 |
Krukowski (2016) [39] | US | No | Qualitative | Focus groups | Public | Students in grades six through eight | Random sample from a middle school, Michigan | 22 |
Ortega-Avila (2018) [40] | Mexico | Yes | Qualitative | Semi-structured interviews | Public | Adolescents (15–19 years) | Purposive sample recruited through participation in an earlier cross-sectional survey, north-west Mexico | 29 |
Swift (2018) [41] | UK | No | Qualitative | Forum posts | Public | Forum posts that referred to the proposed Soft Drinks Industry Levy posted between 17 July 2015 and 31 Aug 2016 | Top three UK online parenting forums | 412 |
Thomas-Meyer (2017) [42] | UK | No | Qualitative | Reader comments | Public | To online articles published on 10 UK news websites with the most total unique visitors in Jan 2013 | Popular online news websites | 1645 |
Visram (2017) [43] | UK | No | Qualitative | Focus groups | Public | Pupils from year 6 (10–11 years) and year 9 (13–14 years) | Four schools in County Durham, northern England | 37 |
Moretto (2014) [44] | Australia | No | Mixed-method | Citizens’ Jury | Public | Adults (≥ 18 years) | Purposive sample of citizens randomly selected from the electoral roll, Queensland | 13 |
Álvarez-Sánchez (2018) [45] | Mexico | Yes | Cross-sectional survey | Self-reported questionnaire administered face-to-face | Public | Adults (20–59 years) | Nationally representative sample of residents, the 2016 Mexican National Health and Nutrition Survey | 6650 |
Barry (2013) [25] | US | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (18–64 years) | Probability-based sample from the nationally representative GfK | 1026 |
Brock (2017) [46] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults | Stratified probability sample randomly selected at household level from the 2014 Texas Lyceum Poll, Texas | 575 |
Comans (2017) [47] | Australia | No | Cross-sectional survey | Online self-report questionnaire | Public | Parents/caregivers of young children (3–7 years) | Subsample from the Environments for Health Living cohort study, South-East Queensland | 563 |
Curry (2018) [48] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (≥ 18 years) | Representative random sample of residents, Kansas | 2203 |
Donaldson (2015) [49] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (≥ 18 years) | Randomly selected representative sample of registered voters, Mid-Atlantic state | 1000 |
Farrell (2018) [50] | Australia | No | Cross-sectional survey | Interview questionnaire administered face-to-face | Public | Children and adults (≥ 15 years) | Representative sample of residents, the 2014 South Australian Health Omnibus Survey, South-Australia | 2732 |
Gollust (2014) [51] | US | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (18–64 years) | Nationally representative sample recruited from a GfK panel | 1319 |
Gollust (2017) [52] | US | No | Cross-sectional survey | Online self-report questionnaire | Public | Undergraduate students | Large university, Minnesota | 494 |
Julia (2015) [18] | France | Yes | Cross-sectional survey | Online self-report questionnaire | Public | Adults (≥ 18 years) | Nationally representative stratified random subsample from the Nutrinet-Santé cohort study | 1996 |
Morley (2012) [53] | Australia | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (18–64 years) who were the main grocery buyer for their household | Random sample | 1521 |
Petrescu (2016) [54] | US | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (≥ 18 years) | Sample recruited using Amazon Mechanical Turk | 1082 |
Petrescu (2016) [54] | UK | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (≥ 18 years) | Sample recruited by Survey Sampling International | 1093 |
Rivard (2012) [55] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (≥ 18 years) | Representative sample recruited by the Survey Research and Data Acquisition Resource | 592 |
Roh (2016) [56] | US | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (≥ 18 years) | Web participants recruited from Amazon.com’s Mechanical Turk | 206 |
Roh (2016) [56] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (≥ 18 years) | Probability sample recruited from a Marketing Systems Group’s national panel | 1000 |
Sainsbury (2018) [57] | Australia | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (≥ 18 years) | Nationally representative sample recruited by Online Research Unit | 2011 |
Simon (2014) [58] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (≥ 18 years) | Random subsample from the 2011 Los Angeles Country Health Survey, Los Angeles | 998 |
Swift (2018) [41] | UK | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (≥ 18 years) | Advertised on four popular parenting forums | 184 |
Tabak (2013) [59] | US | No | Cross-sectional survey | Questionnaire administrated via phone | Public | Adults (≥ 18 years) | Random sample, Mississippi | 2800 |
Wolfson (2015) [60] | US | No | Cross-sectional survey | Online self-report questionnaire | Public | Adults (18–64 years) | Probability-based sample recruited using the GfK survey research panel, Policy Support Survey | 408 |
Niederdeppe (2014) [61] | US | No | Pre-test post-test | Self-reported questionnaire (method of administration not reported) | Public | Adults (18–64 years) | Probability sample from the GfK panel | 3118 (941c) |
Scully (2017) [62] | Australia | No | Pre-test post-test | Online self-report questionnaire | Public | Adults (≥ 18 years) | Random sample of panel members from two non-probability based online panels | 6000 (300c) |