S23Q68 AGE WHEN 1ST USED MARIJUANA-W4

Variable Description

Name
H4TO68
Label
S23Q68 AGE WHEN 1ST USED MARIJUANA-W4
Dataset
wave4

Summary Statistics for 'H4TO68'

Value Valid Label Frequency % of Valid % of All
96 Missing refused 3
0.02%
97 Missing legitimate skip 7,337
46.73%
98 Missing don't know 41
0.26%
Total Responses Valid Invalid Min Max Mean StdDev Variance Skewness Kurtosis
15701 8320 7381 5 32 16.7406249999999 3.10268756445293 9.62667012261085 0.721097763521393 1.70617918830842

Representation

Representation Type
Numeric
Type
Double
Variable is a Weight
False
Aggregation Method
Unspecified
Temporal
False
Geographic
False

Source Questions

H4TO68

Lineage

  • Wave IV In-Home Interview - H4TO68
    S23Q68 AGE WHEN 1ST USED MARIJUANA-W4
    • H4TO68
      68. How old were you the first time you used marijuana?

Concordance

Add Health
Wave I Wave IV
Wave I In-Home Interview Wave IV In-Home Interview
Wave I In-Home Interview Data Wave IV In-Home Interview
H1TO30 H4TO68
you never tried marijuana
71.47%
one year old
0.42%
two years old
0.12%
three years old
0.07%
four years old
0.05%
five years old
0.12%
six years old
0.09%
seven years old
0.08%
eight years
0.13%
nine years old
0.26%
ten years old
0.44%
eleven years old
0.62%
twelve years old
2.41%
thirteen years old
4.08%
fourteen years old
5.81%
fifteen years old
6.08%
sixteen years old
4.86%
seventeen years old
2.18%
eighteen years old and older
0.72%
Add Health
Wave I Wave IV
Wave I In-Home Interview Wave IV In-Home Interview
Wave I In-Home Interview Data Wave IV In-Home Interview
H1TO30 H4TO68
you never tried marijuana
70.40%
one year old
0.41%
two years old
0.12%
three years old
0.07%
four years old
0.05%
five years old
0.12%
six years old
0.09%
seven years old
0.08%
eight years
0.13%
nine years old
0.26%
ten years old
0.43%
eleven years old
0.61%
twelve years old
2.37%
thirteen years old
4.02%
fourteen years old
5.72%
fifteen years old
5.99%
sixteen years old
4.79%
seventeen years old
2.15%
eighteen years old and older
0.71%
Dataset Variable Valid Invalid Min First Quartile Median Third Quartile Max Mean StdDev
Wave I In-Home Interview Data H1TO30 20,436 309 0 18
Wave IV In-Home Interview H4TO68 8,320 7,381 5 15 16 18 32 16.7406249999999 3.10268756445293
Add Health
Wave I Wave IV
Wave I In-Home Interview Wave IV In-Home Interview
Wave I In-Home Interview Data Wave IV In-Home Interview
H1TO30 H4TO68
you never tried marijuana 0
one year old 1
two years old 2
three years old 3
four years old 4
five years old 5
six years old 6
seven years old 7
eight years 8
nine years old 9
ten years old 10
eleven years old 11
twelve years old 12
thirteen years old 13
fourteen years old 14
fifteen years old 15
sixteen years old 16
seventeen years old 17
eighteen years old and older 18