S28Q30 AGE FIRST TRIED MARIJUANA-W1

Variable Description

Name
H1TO30
Label
S28Q30 AGE FIRST TRIED MARIJUANA-W1
Dataset
wave1

Summary Statistics for 'H1TO30'

Value Valid Label Frequency % of Valid % of All
0 Valid you never tried marijuana 14,605
71.47%
70.40%
15 Valid fifteen years old 1,243
6.08%
5.99%
14 Valid fourteen years old 1,187
5.81%
5.72%
16 Valid sixteen years old 994
4.86%
4.79%
13 Valid thirteen years old 834
4.08%
4.02%
12 Valid twelve years old 492
2.41%
2.37%
17 Valid seventeen years old 445
2.18%
2.15%
96 Missing refused 190
0.92%
18 Valid eighteen years old and older 148
0.72%
0.71%
11 Valid eleven years old 127
0.62%
0.61%
98 Missing legitimate skip 115
0.55%
10 Valid ten years old 89
0.44%
0.43%
1 Valid one year old 85
0.42%
0.41%
9 Valid nine years old 54
0.26%
0.26%
8 Valid eight years 27
0.13%
0.13%
2 Valid two years old 24
0.12%
0.12%
5 Valid five years old 24
0.12%
0.12%
6 Valid six years old 18
0.09%
0.09%
7 Valid seven years old 16
0.08%
0.08%
3 Valid three years old 14
0.07%
0.07%
Total Responses Valid Invalid Min Max
20745 20436 309 0 18

Representation

Representation Type
Code List
Selection Style
SelectOne
Measurement Unit
numeric
Measurement Unit
numeric
Aggregation Method
Unspecified
Temporal
False
Geographic
False

Source Questions

H1TO30

Lineage

  • Wave I In-Home Interview Data - H1TO30
    S28Q30 AGE FIRST TRIED MARIJUANA-W1
    • H1TO30
      30. How old were you when you tried marijuana for the first time?

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