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Table 2 Coding system

From: A gloomy picture: a meta-analysis of randomized controlled trials reveals disappointing effectiveness of programs aiming at preventing child maltreatment

Variable

Coding

Description

Intervention characteristics

  

Name of the program

  

Focus

1. Support

 
 

2. Parent training

 
 

3. Parent training and support

 
 

4. Other

 

Location of delivery

1. At home

 
 

2. At a center

 
 

3. Both

 

Delivery format

1. Individual

 
 

2. In a group

 
 

3. Both

 

Duration

1. < 6 months

 
 

2. 6–12 months

 
 

3. > 12 months

 

Sessions

1. < 16

 
 

2. 16-30

 
 

3. > 30

 

Age child at start intervention

 

Continuous; if a range was provided, the minimum age was coded

Sample characteristics

  

Continent of origin

1. Australia

Including New Zealand

 

2. North America

Including USA and Canada

 

3. Europe

 
 

4. Africa

 
 

5. South America

 
 

6. Asia

 

Type of sample

1. General population

 
 

2. At risk for maltreatment

 
 

3. Maltreating

 

Ethnicity

1. Majority

Percentage of each category in the sample, based on reports in the study

 

2. Minority

Design characteristics

  

Sample size

 

Continuous

Response rate

 

Continuous

Intent to treat

1. Yes

 
 

2. No

 

Blind assessment

1. Yes

 
 

2. No

 

Pre-test

1. Yes

 
 

2. No

 

% Active at the end of the intervention

 

Continuous

Control condition

1. No active intervention elements

 
 

2. Service as usual

 
 

3. Other…

 

Timing follow-up

 

Continuous

Type of measure

1. Self-report

 
 

2. Other-report

 

Background characteristics

  

Year of publication

 

Continuous

Type of publication

1. Journal article

 
 

2. Dissertation