Table 2.

Condition and patient characteristics of included studies evaluating relaxation training for paediatric headache

First Author	Condition Studied	N	Age Range (years)	Mean Age (years)	Gender (M:F)
Richter et al.	Migraine	42	9–18	12.87	17:34a
Fentress et al.	Migraine	18	8–12	10.1	7:11
McGrath et al.	Migraine	99	9–17	13.1	30:69
Wisneiwski et al.	Migraine or TTH	10	12–17	13.5	3:7
Kroner-Herwig et al.	TTH or TTH/Migraine combined	50	8–14	10.96	20:30
Larsson et al.	Migraine or TTH	288	10–18	Not reported	30:258
Trautmann et al.	Migraine, TTH or both	64	10–18b	12.7	28:33

TTh Tension-type headache.

^aGender was reported prior to attrition.

^bThe upper age was discrepantly reported as 18 and 19. Follow-up was done at 12 months, so the variation is likely to represent the chronological progression during the study period.