Table 1.

Descriptive characteristics of the children enrolled in the CEFALO study

CABT casesControls
n (%)n (%)
Age, y
 7–12170 (48.3)318 (49.2)
 13–19182 (51.7)328 (50.8)
Sex
 Male190 (54.0)353 (54.6)
 Female162 (46.0)293 (45.4)
Country
 Denmark85 (24.1)170 (26.3)
 Sweden138 (39.2)228 (35.3)
 Norway44 (12.5)78 (12.1)
 Switzerland85 (24.1)170 (26.3
Parental educational level
 Lowa20 (5.7)26 (4.0)
 Mediumb156 (44.3)269 (41.6)
 Highc176 (50.0)346 (53.6)
 Missing5 (0.8)
Maternal age (years)
 <3642 (11.9)82 (12.7)
 36–45227 (64.5)392 (60.7)
 46+77 (21.9)153 (23.7)
 Missing6 (1.7)19 (2.9)
Paternal age (years)
 <3618 (5.1)37 (5.7)
 36–45198 (56.2)320 (49.5)
 46+130 (36.9)261 (40.4)
 Missing6 (1.7)28 (4.3)
  • NOTE: CABT denotes childhood and adolescent brain tumor. For parental educational level, the highest level of the two parents was chosen.

  • aElementary school.

  • bHigh school or apprenticeship.

  • cUniversity or postgraduate university.