Table 7.
Sample characteristics of smoking parameters by body mass index and sex categories in UK Biobank ever smokers (current plus former smokers). Data are mean (standard deviation). Table reproduced with permission from Carreras-Torres et al, 201851
| Smoking parameters | Total (n=169 056) | Body mass index category | Sex | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Underweight (<18.5; n=816) |
Normal (18.5-25.0; n=49 017) |
Overweight (25.0-30.0; n=74 439) |
Obese (>30.0; n=44 784) |
Female (n=81 091) | Male (n=87 965) | ||||
| Age started smoking (years) | 17.3 (4.2) | 17.5 (4.8) | 17.6 (4.2) | 17.3 (4.2) | 17.1 (4.3) | 17.8 (4.4) | 16.9 (4.0) | ||
| No of cigarettes smoked per day | |||||||||
| Ever smokers | 18.4 (10.1) | 16.6 (10.5) | 15.9 (8.6) | 18.2 (9.6) | 21.1 (11.5) | 16.1 (8.2) | 20.5 (11.2) | ||
| Current smokers* | 15.8 (8.4) | 16.8 (11.1) | 15.0 (8.2) | 15.6 (8.1) | 17.3 (9.0) | 14.2 (7.3) | 17.4 (9.2) | ||
*
N=37 519 current smokers.