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Table 2 Recruitment studies – summary of predictors

From: Identifying the participant characteristics that predict recruitment and retention of participants to randomised controlled trials involving children: a systematic review

 

Parent

Child

Family

Neighbourhood

Author

Predicting

Setting

Medical or non- medical intervention

Ethnicity

Education

Parent Age

Income

SES

Parental depression

Single parenthood

Marital status

Employment

Child gender

Child age

Number of family members

Number of children

N'hood high school drop out

Density of n'hood networks

Baker et al., 2011 [23]

Recruitment

Community

Non- medical

✔

   

✔

X

X

        

Byrnes et al., 2012 [25]

Recruitment

Health

Non- medical

✔

✔

✔

      

X

   

✔

 

Constantine et al., 1993 [26]

Recruitment

Mixed

Non- medical

✔

              

Cunningham et al., 2000 [28]

Recruitment

Community

Non- medical

 

✔

 

X

 

X

✔

  

✔

X

    

Damashek et al., 2011 [29]

Recruitment

Community

Non- medical

X

X

X

X

 

✔

         

Daniels et al., 2012 [30]

Recruitment

Community

Non- medical

X

✔

✔

    

✔

       

Eisner M and Meidert U, 2011 [31]

Recruitment

Community

Non- medical

✔

  

✔

✔

 

X

       

✔

Heinrichs et al., 2005 [35]

Recruitment

Community

Non- medical

  

X

 

✔

 

✔

    

X

   

Ireys et al., 2001 [36]

Recruitment

Mixed

Medical

✔

    

✔

   

X

     

Mihrshahi et al., 2002 [39]

Recruitment

Community

Medical

X

✔

X

     

X

      

Multi-centre Otitis Media Study Group, 2001 [38]

Recruitment

Health

Medical

X

   

X

    

X

X

 

X

  

Van den Akkeret al., 2003 [44]

Recruitment

Health

Medical

         

X

X

    

Vermaire et al., 2011 [49]

Recruitment

Health

Non- medical

✔

   

✔

 

X

X

 

X

     

Winslow et al., 2009 [47]

Recruitment

Mixed

Non- medical

X

X

 

✔

           

Zebracki et al., 2003 [48]

Recruitment

Health

Medical

X

X

✔

X

   

X

X

  

X

   
   

Total

12

7

6

5

5

4

5

3

2

6

3

2

1

1

1

   

Significant

6

4

3

2

4

2

2

1

0

1

0

0

0

1

1

  

Non- significant

6

3

3

3

1

2

3

2

2

5

3

2

1

0

0

  1. Key: x = not significant, ✔ = significant, SES socioeconomic status