Table 1.

LEA, school type, pupil age range, single or mixed sex, number of pupils enrolled for the schools used in the study. The severity of the stutter of the child under investigation is also indicated in the right-most column

LEA	Type of school	Age range	Sex	Number on roll	Severity (stuttered words per minute)
Surrey	Secondary	11–16	Mixed	600	5.5
Worcestershire	Primary	5–11	Mixed	640	16
Hounslow	Secondary	11–19	Mixed	1240	2.5
Essex	Primary	4–11	Mixed	200	12.5
Surrey	Independent prep	3–13	Mixed	290	6
Oldham	Primary	3–11	Mixed	200	18.5
Suffolk	Secondary middle	9–13	Mixed	470	2
Essex	Primary	5–11	Mixed	254	9.5
Barking	Junior	7–11	Mixed	467	14.5
Hounslow	Primary	3–11	Mixed	630	11
Norfolk	Secondary	11–16	Mixed	850	3.5
Hillingdon	Independent secondary	11–18	Boys	776	3
Redcar & Cleveland	Secondary	11–16	Mixed	726	13.5
Southampton	Primary	4–11	Mixed	310	7
Lincolnshire	Secondary	11–16	Mixed	247	6
Hounslow	Secondary	11–18	Mixed	2335	1.5