Table 2.
Category | THIN |
HSE |
|||
---|---|---|---|---|---|
Complete records (%) | After MAR MI (%)*† | After MNAR MI (%)*‡ | Observed (%) | Reclassifying ex-smokers (%)§ | |
Non-smoker | 55 | 53 | 57 | 53 | 57 |
Ex-smoker | 17 | 22 | 23 | 26 | 22 |
Smoker | 28 | 25 | 20 | 21 | 21 |
*Directly standardised using the HSE age distribution as standard.
†Imputed assuming that missing values are smokers, non-smokers or ex-smokers.
‡Imputed assuming that missing values are non-smokers or ex-smokers.
§Within each age group, reclassifying the optimum number of ex-smokers as non-smokers based on the distributions shown after MNAR MI.
HSE, Health Survey for England 2008; MAR, missing at random; MI, multiple imputation; MNAR, missing not at random; THIN, The Health Improvement Network.