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Table 1 PRECIS-2 ratings and characteristics of 31 published trials of interventions to reduce obesity in children aged 6–12 years

From: A comparison of meta-analytic methods for synthesizing evidence from explanatory and pragmatic trials

Study

Type of treatment

Standardized mean difference

Standard error*

Average overall PRECIS rating

PRECIS classification

Baranowski 2003 (2)

Physical activity and dietary

0.99

0.388

2.44

Explanatory

Lazaar 2007 (6)

Physical activity

− 0.58

0.16

2.78

Explanatory

Lazaar 2007 (7)

Physical activity

− 0.75

0.16

2.78

Explanatory

Lazaar 2007 (8)

Physical activity

− 0.38

0.29

2.78

Explanatory

Lazaar 2007 (9)

Physical activity

− 0.48

0.29

2.78

Explanatory

Story 2003a (2)

Physical activity and dietary

− 0.56

0.28

3.22

Pragmatic

Beech 2003 (4)

Physical activity and dietary

− 0.52

0.41

3.11

Pragmatic

Caballero 2003

Physical activity and dietary

− 0.05

0.05

3.00

Pragmatic

Robinson 2003 (2)

Physical activity and dietary

− 0.08

0.26

3.00

Pragmatic

Beech 2003 (5)

Physical activity and dietary

− 0.52

0.41

3.11

Pragmatic

Kain 2004 (1)

Physical activity and dietary

− 0.19

0.06

3.33

Pragmatic

James 2004

Dietary

− 0.39

0.09

4.50

Pragmatic

Kain 2004 (2)

Physical activity and dietary

0.06

0.06

3.33

Pragmatic

Harrison 2006

Physical activity

− 0.18

0.12

3.89

Pragmatic

Amaro 2006

Dietary

− 0.19

0.14

3.11

Pragmatic

Spiegel-2006-Obesity

Physical activity and dietary

− 0.38

0.06

3.56

Pragmatic

Gutin 2008

Physical activity

− 0.10

0.10

3.67

Pragmatic

Hamelink-Basteen

Physical activity and dietary

− 0.12

0.13

3.0

Pragmatic

Simon 2008

Physical activity

− 0.02

0.07

4.33

Pragmatic

Reed 2008

Physical activity

0.04

0.14

3.89

Pragmatic

Foster 2008

Physical activity

− 0.06

0.07

3.78

Pragmatic

Paineau 2008 (10)

Dietary

− 0.04*

0.09

3.00

Pragmatic

Vizcaino 2008 (2)

Physical activity

− 0.03*

0.09

3.00

Pragmatic

Sanigorski 2008

Physical activity and dietary

− 0.17

0.05

4.25

Pragmatic

Taylor 2008

Physical activity and dietary

− 0.39

0.10

3.00

Pragmatic

Paineau 2008 (11)

Dietary

− 0.02

0.09

3.00

Pragmatic

Vizcaino 2008 (1)

Physical activity

0.00

0.09

3.00

Pragmatic

Gentile 2009

Physical activity and dietary

0.04

0.06

4.00

Pragmatic

Sichieri 2009

Dietary

0.08

0.07

4.56

Pragmatic

Donnelly 2009

Physical activity

0.00

0.05

4.22

Pragmatic

Marcus 2009

Physical activity and dietary

− 0.42

0.07

3.25

Pragmatic

  1. *Rounded up to the nearest two decimal places