Table 2 Characteristics of the 12 articles in the meta- analysis and the impact on obesity, overweight and BMI

Barquera S, et al. [44], Mexico

1) Adolescents (n = 416)

1) Mexican Nutrition Survey Adolescents, 1999

Adults (n = 2180)

2) Mexican Health and Nutrition Survey, 2006

2) Adolescents (n = 7464)

3) The Mexican household income and expenditure surveys, 1989, 1998 and 2006

Adults (n = 21 113)

3) Household (n = 12 000 to 20 000)

Bonnet C, et al. [45], France

Household (n = 19 000)

Consumer panel data

2003-2005

Claro RS, et al. [46], Brazil

All ages

Household food consumption data

(n = 48470)

2002-2003

Dharmasena S, et al. [42], USA

Household

Nielsen Homescan Panel

1998 to 2003

Finkelstein EA, et al. [18], USA

Household

Nielsen Homescan panel

(n = 384 252)

2006

Finkelstein EA, et al. [47] USA

Adults and children

Nielsen Homescan panel

2006

Fletcher JM, et al. [12], USA

Ages >18

Behavioral Risk Factor Surveillance System 1990 – 2006

Fletcher JM, et al. [48], USA

Ages 3 to 18 (n = 34 000)

NHANES 1989 and 2006

Han E and Powell LM. [23], USA

Follow-up after high school graduation

Monitoring the Future Surveys

(n = 2 400)

1992-2003

Lin BH, et al. [49], USA

Household (n = 22 750)

Nielsen National Consumer Panel

Children 2–19 (n = 7291 Children)

1998-2007

Adults 20 and older (n = 8 322)

National Health and Nutrition Examination Survey

2003-2006

Powell LM, et al. [21], USA

Students from 8th - 10th grade

Monitoring the future Survey combined with state-level tax data and local area contextual measure 1997-2006

12 000 – 15 000 Students

from 12th grade (n = 30 000)

Smith TA, et al. [50] USA

Nielsen Homescan panelists

1998 – 2007