Strengths and limitations
headaches, headache
CHRONIC HEADACHES
The basic limitation of the study was the lack of information on some of the criteria of the ICHD classification, possibly implying an imperfect classification. In contrast, we had information on many other aspects of interest in children suffering from headache. However, we are aware that there are weaknesses associated with using questionnaire data. It can never be as nuanced as an interview, where it would be possible to get more nuanced answers and thereby minimize the amount of non-classifiable headaches. The insights obtainable from this type of epidemiological research may, however, also inform the clinical setting characterized by one-to-one interviews.This population is a selected sample of parents and children willing to participate in a trial and to receive chiropractic treatment and is therefore not directly generalizable. However, there were no fees involved and therefore participation was an option for everyone despite income.This study included children with recurrent or chronic headaches. However, children with less serious headaches also requires attention since early prevention could decrease the prevalence of more serious cases and thereby have a huge impact on future health and quality of life. Since headaches in general are very common, the full picture is better achieved if we not only consider the most bothersome headaches [