Variable Description

Name
H1TO4
Label
S28Q4 AGE-BEGAN SMOKING REGULARLY-W1
Dataset

Summary Statistics for 'H1TO4'

Value Valid Label Frequency % of Valid % of All
. Missing missing 1
0.00%
0 Valid under one year 29
0.71%
0.14%
1 Valid one year old 11
0.27%
0.05%
5 Valid two to five years old 12
0.30%
0.06%
6 Valid six years old 12
0.30%
0.06%
7 Valid seven years old 21
0.52%
0.10%
8 Valid eight years old 38
0.94%
0.18%
9 Valid nine years old 45
1.11%
0.22%
10 Valid ten years old 127
3.13%
0.61%
11 Valid eleven years old 167
4.12%
0.81%
12 Valid twelve years old 475
11.71%
2.29%
13 Valid thirteen years old 660
16.26%
3.18%
14 Valid fourteen years old 781
19.25%
3.76%
15 Valid fifteen years old 729
17.96%
3.51%
16 Valid sixteen years old 576
14.19%
2.78%
17 Valid seventeen years old 279
6.88%
1.34%
18 Valid eighteen years and older 96
2.37%
0.46%
96 Missing refused 6
0.03%
97 Missing legitimate skip 16,658
80.30%
98 Missing don't know 22
0.11%
Total Responses Valid Invalid Min Max
20745 4058 16687 0 18

Representation

Source Questions

H1TO4

Lineage

  • Wave I In-Home Interview Data - H1TO4
    S28Q4 AGE-BEGAN SMOKING REGULARLY-W1
    • 4. How old were you when you first started smoking cigarettes regularly (at least 1 cigarette every day for 30 days)?

Concordance

Add Health
Wave I Wave III Wave IV
Wave I In-Home Interview Wave III In-Home Interview Wave IV In-Home Interview
Wave I In-Home Interview Data Wave III In-Home Interview Wave IV In-Home Interview
H1TO4 H3TO5 H4TO4
under one year
0.71%
one year old
0.27%
two to five years old
0.30%
six years old
0.30%
seven years old
0.52%
eight years old
0.94%
nine years old
1.11%
ten years old
3.13%
eleven years old
4.12%
twelve years old
11.71%
thirteen years old
16.26%
fourteen years old
19.25%
fifteen years old
17.96%
sixteen years old
14.19%
seventeen years old
6.88%
eighteen years and older
2.37%
Add Health
Wave I Wave III Wave IV
Wave I In-Home Interview Wave III In-Home Interview Wave IV In-Home Interview
Wave I In-Home Interview Data Wave III In-Home Interview Wave IV In-Home Interview
H1TO4 H3TO5 H4TO4
under one year
0.14%
one year old
0.05%
two to five years old
0.06%
six years old
0.06%
seven years old
0.10%
eight years old
0.18%
nine years old
0.22%
ten years old
0.61%
eleven years old
0.81%
twelve years old
2.29%
thirteen years old
3.18%
fourteen years old
3.76%
fifteen years old
3.51%
sixteen years old
2.78%
seventeen years old
1.34%
eighteen years and older
0.46%
Dataset Variable Valid Invalid Min First Quartile Median Third Quartile Max Mean StdDev
Wave I In-Home Interview Data H1TO4 4,058 16,687 0 18
Wave III In-Home Interview H3TO5 5,765 9,432 5 15 17 18 26 16.5703382480485 2.49074371922954
Wave IV In-Home Interview H4TO4 6,773 8,928 5 15 17 19 31 17.3787095821644 3.51647061021874
Add Health
Wave I Wave III Wave IV
Wave I In-Home Interview Wave III In-Home Interview Wave IV In-Home Interview
Wave I In-Home Interview Data Wave III In-Home Interview Wave IV In-Home Interview
H1TO4 H3TO5 H4TO4
under one year 0
one year old 1
two to five years old 5
six years old 6
seven years old 7
eight years old 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 and older 18