The economic and personal burden of cluster headache: a controlled cross-sectional study

Table 3 Education level by age of onset

Cluster headache onset	> 40 years N = 122	20–40 years N = 190	< 20 years N = 88
Age at interview, years	55.8 (6.2)	43.3 (9.86)	39.6 (12.4)
Episodic cluster headache	67 (55%)	129 (68%)	57 (65%)
Cluster headache duration, years	7.7 (5.9)	14.8 (9.5)	25.0 (13.1)
Education level
Student	2 (2%)	6 (3%)	10 (11%)
Primary/secondary	15 (12%)	21 (11%)	7 (8%)
Technical or associate degree	49 (40%)	85 (45%)	32 (36%)
Bachelor or master degree or higher	50 (41%)	72 (38%)	30 (34%)
Other degree	6 (5%)	5 (3%)	9 (10%)

Data presented for 400 patients as means (SD) for numerical variables and as number (percentages) for categorical variables. The table implies that educational attainment was slightly higher in age of onset above 20 years old. However, the mean age was lower in the group with age of onset before the age of 20 and more people were students. The group only completing primary or secondary level is smallest in the group with onset before the age of 20

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