Data
175,577 items of data are available, covering 153,316 participants.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are Units.
Maximum | 7 |
Decile 9 | 1 |
Decile 8 | 0.820312 |
Decile 7 | 0.678191 |
Decile 6 | 0.536887 |
Median | 0.44186 |
Decile 4 | 0.346196 |
Decile 3 | 0.259259 |
Decile 2 | 0.186047 |
Decile 1 | 0.107843 |
Minimum | 0 |
|
|
- Mean = 0.528378
- Std.dev = 0.410047
- 1931 items above graph maximum of 1.89216
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
150,900 participants, 150,900 items
Maximum | 7 |
Decile 9 | 1 |
Decile 8 | 0.857143 |
Decile 7 | 0.706731 |
Decile 6 | 0.57 |
Median | 0.465909 |
Decile 4 | 0.36875 |
Decile 3 | 0.277778 |
Decile 2 | 0.198864 |
Decile 1 | 0.116667 |
Minimum | 0 |
|
|
- Mean = 0.550721
- Std.dev = 0.418712
- 1884 items above graph maximum of 1.88333
|
Instance 1 : First repeat assessment visit (2012-13)
5,341 participants, 5,341 items
Maximum | 3 |
Decile 9 | 0.909674 |
Decile 8 | 0.702128 |
Decile 7 | 0.551724 |
Decile 6 | 0.44898 |
Median | 0.354167 |
Decile 4 | 0.277266 |
Decile 3 | 0.208082 |
Decile 2 | 0.144868 |
Decile 1 | 0.0888889 |
Minimum | 0 |
|
|
- Mean = 0.442868
- Std.dev = 0.356972
- 48 items above graph maximum of 1.73046
|
Instance 2 : Imaging visit (2014+)
17,771 participants, 17,771 items
Maximum | 3.5 |
Decile 9 | 0.769231 |
Decile 8 | 0.599224 |
Decile 7 | 0.47619 |
Decile 6 | 0.379032 |
Median | 0.298077 |
Decile 4 | 0.234375 |
Decile 3 | 0.177632 |
Decile 2 | 0.125 |
Decile 1 | 0.0729167 |
Minimum | 0 |
|
|
- Mean = 0.378069
- Std.dev = 0.307837
- 147 items above graph maximum of 1.46554
|
Instance 3 : First repeat imaging visit (2019+)
1,565 participants, 1,565 items
Maximum | 3.5 |
Decile 9 | 0.75 |
Decile 8 | 0.580189 |
Decile 7 | 0.473146 |
Decile 6 | 0.381356 |
Median | 0.303038 |
Decile 4 | 0.2375 |
Decile 3 | 0.175255 |
Decile 2 | 0.126984 |
Decile 1 | 0.0714286 |
Minimum | 0 |
|
|
- Mean = 0.372674
- Std.dev = 0.306496
- 14 items above graph maximum of 1.42857
|
Notes
Average number of pack-years smoked by an individual each year, over their adult lifetime, calculated using pack-years data field. Pack years as a proportion of lifespan exposed to smoking is defined as pack years divided by the number of years between the participants' age at recruitment and the age of 16:
Pack years / (Age at recruitment - 16)
This derived data field has come from Professor Martin Tobin at the University of Leicester.