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Table 1 Number of schools in each group

From: A randomised control trial of the effectiveness of personalised letters sent subsequent to school dental inspections in increasing registration in unregistered children

Group

Intervention

Description of Intervention

No. of schools

1

'Traditional'

Inspections conducted against a checklist of treatment need criteria. Personalised letter for every child, tailored to

the confirmed registration status of the child prompting registration where necessary was sent home via the child in

sealed, personally addressed envelopes with a list of local GDPs accepting NHS child patients.

15

2

Letter only

As above, but no dental inspection conducted.

14

3

NDIP

Inspections conducted against a checklist of treatment need criteria. Personalised letter for every child – not

tailored to the confirmed registration status of the child – was sent home via the child in sealed, personally

addressed envelopes with a list of local GDPs accepting NHS child patients.

16

4

Control

Children in the schools allocated to this group received neither a dental inspection nor a letter home until after the

end of the study.

16