Table 2

Demographic characteristics of the sample

VariableParticipants,
no. (%)
Age (in years), mean (SD)16.5 (0.8)
Sex
 Female370 (44.4)
 Male463 (55.6)
Awareness that energy drinks contain high amounts of caffeine
 Yes792 (95.1)
 No41 (4.9)
Use of caffeinated energy drink
 Current use*293 (35.2)
 Past use232 (27.8)
 Non-use308 (37.0)
Grade†
 Below average233 (28.0)
 Average310 (37.2)
 Above average290 (34.8)
Stress regarding grades‡
 Below average218 (26.2)
 Average375 (45.0)
 Above average240 (28.8)
Father’s education
 High school degree or lower307 (36.9)
 College degree454 (54.5)
 Graduate degree72 (8.6)
Mother’s education
 High school degree or lower450 (54.0)
 College degree341 (40.9)
 Graduate degree42 (5.0)
Parents’ socioeconomic status
 Below average206 (24.7)
 Average419 (50.3)
 Above average208 (25.0)
Parents’ health status
 Below average377 (45.3)
 Average376 (45.1)
 Above average71 (9.6)
Previous health education on safe drug use
 More than three times75 (9.0)
 Two or three times260 (31.2)
 One time158 (19.0)
 None340 (40.8)
Total833 (100.0)
  • *Current use of caffeinated energy drinks as needed or habitually.

  • †Academic reports.

  • ‡Pressure felt to academically achieve.