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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  
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