Data
174,078 items of data are available, covering 153,151 participants.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are Units.
| Maximum | 7 |
| Decile 9 | 1 |
| Decile 8 | 0.823366 |
| Decile 7 | 0.68 |
| Decile 6 | 0.538636 |
| Median | 0.443182 |
| Decile 4 | 0.34802 |
| Decile 3 | 0.260204 |
| Decile 2 | 0.1875 |
| Decile 1 | 0.108491 |
| Minimum | 0 |
|
|
- Mean = 0.529922
- Std.dev = 0.41063
- 1931 items above graph maximum of 1.89151
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
150,903 participants, 150,903 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 | 0.1989 |
| Decile 1 | 0.116667 |
| Minimum | 0 |
|
|
- Mean = 0.550725
- Std.dev = 0.418711
- 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+)
16,475 participants, 16,475 items
| Maximum | 3.5 |
| Decile 9 | 0.773749 |
| Decile 8 | 0.601415 |
| Decile 7 | 0.478723 |
| Decile 6 | 0.38125 |
| Median | 0.3 |
| Decile 4 | 0.236111 |
| Decile 3 | 0.178571 |
| Decile 2 | 0.125 |
| Decile 1 | 0.0735294 |
| Minimum | 0 |
|
|
- Mean = 0.380341
- Std.dev = 0.309525
- 138 items above graph maximum of 1.47397
|
Instance 3 : First repeat imaging visit (2019+)
1,359 participants, 1,359 items
| Maximum | 3.5 |
| Decile 9 | 0.74577 |
| Decile 8 | 0.578947 |
| Decile 7 | 0.474087 |
| Decile 6 | 0.384931 |
| Median | 0.305804 |
| Decile 4 | 0.240825 |
| Decile 3 | 0.178571 |
| Decile 2 | 0.128571 |
| Decile 1 | 0.0741464 |
| Minimum | 0 |
|
|
- Mean = 0.375493
- Std.dev = 0.310052
- 14 items above graph maximum of 1.41739
|
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.
