Portion, package or tableware size for changing selection and consumption of food, alcohol and tobacco

Hollands GJ et al (2015)

Cochrane Database of Systematic Reviews - 10.1002/14651858.CD011045.pub2.

Ewch i'r cyhoeddiad

Mapiau Tystiolaeth

• Lleoliadau Gofal: Lleoliad cymunedol
• Grwpiau Poblogaeth: Y boblogaeth yn gyffredinol
• Ymyriadau: Ymyriadau Rhoi'r Gorau i Ysmygu Cyffredinol
• Canlyniad: Newidiadau i gyfraddau ysmygu

Math o Dystiolaeth

Adolygiad Systematig

Nodau

Mae'r awduron yn datgan:

 

Canfyddiadau

Mae'r awduron yn datgan:

2

The current version of this review includes 72 studies, published between 1978 and July 2013, assessed as being at overall unclear or high risk of bias with respect to selection and consumption outcomes. 4% of studies (3/72) manipulated cigarettes.

A meta-analysis of six independent comparisons from three studies (108 participants) found low quality evidence for no difference in the effect of cigarette length on consumption (SMD 0.25, 95% CI -0.14 to 0.65)."

Casgliadau

Mae'r awduron yn datgan:

"We are unable to highlight clear implications for tobacco or alcohol policy due to identified gaps in the current evidence base."