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Table 1 Purposive sampling matrix of parents and children

From: MOMENT – Management of Otitis Media with Effusion in Cleft Palate: protocol for a systematic review of the literature and identification of a core outcome set using a Delphi survey

Child age (years)

Treatment

Total

 

Ventilation tubes

Hearing aids

Ventilation tubes and hearing aids

Watchful waiting

 

Parent sampling matrix

    

 0 to 5

3

3

2

2

10

 6 to 8

3

3

2

2

10

 9 to 11

3

3

2

2

10

 Total

9

9

6

6

30

Child sampling matrix

 6 to 8

3

3

2

2

10

 9 to 11

3

3

2

2

10

 Total

6

6

4

4

20

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Trials

ISSN: 1745-6215