Name
ydrkcaf
Label
Caffeine beverages per day
Units
drinks
Type
integer
Visit vs Caffeine beverages per day
N Mean StdDev Median Min Max Unknown Total
Peds - - - - - - - -
Teenz - - - - - - - -
TREC 513 2.0 ± 1.2 2.0 0.0 4.0 4 517
Age at time of visit vs Caffeine beverages per day
TREC
N Mean StdDev Median Min Max Unknown Total
Total 513 2.0 ± 1.2 2.0 0.0 4.0 4 517
16.1 to 17.4 years 130 1.7 ± 1.2 1.5 0.0 4.0 - 130
17.4 to 17.7 years 127 1.9 ± 1.4 2.0 0.0 4.0 2 129
17.7 to 17.9 years 129 2.1 ± 1.2 2.0 0.0 4.0 - 129
17.9 to 19.6 years 127 2.1 ± 1.2 2.0 0.0 4.0 2 129
Male gender vs Caffeine beverages per day
TREC
N Mean StdDev Median Min Max Unknown Total
Total 513 2.0 ± 1.2 2.0 0.0 4.0 4 517
No 255 1.9 ± 1.2 2.0 0.0 4.0 1 256
Yes 258 2.1 ± 1.3 2.0 0.0 4.0 3 261
Race vs Caffeine beverages per day
TREC
N Mean StdDev Median Min Max Unknown Total
Total 513 2.0 ± 1.2 2.0 0.0 4.0 4 517
White 309 1.9 ± 1.2 2.0 0.0 4.0 - 309
Black 181 2.0 ± 1.3 2.0 0.0 4.0 4 185
Other 23 2.2 ± 1.3 2.0 0.0 4.0 - 23