Study concept and design: Kypri, Saunders, Cunningham, McCambridge.
Acquisition, analysis, or interpretation of data: Kypri, Vater, Bowe, Saunders, Horton, McCambridge.
Drafting of the manuscript: Kypri, Cunningham, Horton.
Critical revision of the manuscript for important intellectual content: Kypri, Vater, Bowe, Saunders, Cunningham, Horton, McCambridge.
Statistical analysis: Bowe, Horton.
Obtained funding: Kypri, Saunders, McCambridge.
Administrative, technical, or material support: Kypri, Vater, Cunningham, McCambridge.
Study supervision: Kypri, Saunders, McCambridge.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported. The authors have not been in receipt of alcohol or tobacco industry funding in the last 5 years. None has any other relevant financial interest.
Funding/Support: The research was funded by the Alcohol Advisory Council (now the Health Promotion Agency), a statutory body of the New Zealand government. Dr Kypri’s involvement in the research was partly funded by an Australian National Health & Medical Research Council Senior Research Fellowship (APP1041867).
Role of the Sponsor: The New Zealand Alcohol Advisory Council had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Correction: This article was corrected on April 8, 2014, to fix an author affiliation and typographical errors in the Results section of the Abstract and also in the last paragraph of the Discussion section.