Study Bakker & VandeBerg (1974): study NL 1968
- Public
 - 20-65 aged, general public, The Netherlands, 1968
 - Sample
 - Respondents
 - N = 1552
 - Non Response
 - 34% refusal and unattainable.
 - Assessment
 - 
        Interview: face-to-face                    
Structured interview 
Correlate
- Authors's Label
 - Worrying about health of self and family
 - Our Classification
 - 
            
 - 
                        
 - Operationalization
 - Direct question rated on an open graphic scale ranging from 'not worried' to 'very worried'.