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Derrington 2012 thesis.pdf - Anglia Ruskin Research Online

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Figure 5.3.3 Recruitment and grouping<br />

Eligible 25<br />

students<br />

School The Centre CVC<br />

14 11<br />

Informed Yes No Yes No<br />

consent 13 1 9 1<br />

(Initial) A B A B<br />

(5)<br />

(4)<br />

groups 7 6<br />

6<br />

3<br />

Therapy Yes No Yes No Yes No Yes No<br />

adherence 6 1 6 0 6 0 3 0<br />

!<br />

Initial grouping resulted in five students from CVC being assigned to group A and<br />

four to group B. However, the week before sessions were due to start, having<br />

received the consent forms and having replied to all the students and their parents<br />

informing them which group they were in (appendix 5.3.3d), the head of year 7<br />

approached me with an urgent request for a student in his year to be moved from<br />

group B to A (8.3.1). This resulted in six students from CVC in group A and only<br />

three in group B. At the start of the clinical work, there was therefore a total of<br />

thirteen students in group A and nine in group B. The groups were unbalanced and<br />

sparse data can lead to statistical assumptions being undermined, however no<br />

percentage is smaller than 5%, so this was not a concern (Breslow, 1981; Greenland,<br />

Schwartzbaum and Finkle, 2000). This figure also shows that all students, except one,<br />

attended their therapy sessions.<br />

! ""&!

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