Data
171,836 items of data are available, covering 152,902 participants.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are Units.
| Maximum | 7 |
| Decile 9 | 1 |
| Decile 8 | 0.827586 |
| Decile 7 | 0.683333 |
| Decile 6 | 0.542265 |
| Median | 0.445946 |
| Decile 4 | 0.35 |
| Decile 3 | 0.261905 |
| Decile 2 | 0.1875 |
| Decile 1 | 0.109375 |
| Minimum | 0 |
|
|
- Mean = 0.5322
- Std.dev = 0.411392
- 1928 items above graph maximum of 1.89062
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
150,912 participants, 150,912 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 = 0.550717
- Std.dev = 0.418706
- 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+)
14,399 participants, 14,399 items
| Maximum | 3.5 |
| Decile 9 | 0.782814 |
| Decile 8 | 0.608791 |
| Decile 7 | 0.482456 |
| Decile 6 | 0.385417 |
| Median | 0.303571 |
| Decile 4 | 0.23901 |
| Decile 3 | 0.180804 |
| Decile 2 | 0.12585 |
| Decile 1 | 0.075 |
| Minimum | 0 |
|
|
- Mean = 0.384001
- Std.dev = 0.310887
- 109 items above graph maximum of 1.49063
|
Instance 3 : First repeat imaging visit (2019+)
1,184 participants, 1,184 items
| Maximum | 3.5 |
| Decile 9 | 0.742534 |
| Decile 8 | 0.578947 |
| Decile 7 | 0.478646 |
| Decile 6 | 0.390661 |
| Median | 0.31 |
| Decile 4 | 0.243826 |
| Decile 3 | 0.180653 |
| Decile 2 | 0.129099 |
| Decile 1 | 0.0768849 |
| Minimum | 0 |
|
|
- Mean = 0.377338
- Std.dev = 0.309808
- 12 items above graph maximum of 1.40818
|
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.
