Transition probability matrices for A: smoking status (n=17 140) and B: quit status (n=7950—current and ex-smokers at Wave 3)
| A Wave t | Wave t+2 | B Wave t | Wave t+2 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Current smoker | Ex-smoker | Never-smoker | Total (n) | Ex-smoker | Current tried to quit | Current (no quit) | Total (n) | ||
| Current smoker | 0.76 | 0.13 | 0.02* | 6370 | Ex-smoker | 0.90 | 0.02 | 0.02 | 9520 |
| Ex-smoker | 0.05 | 0.89 | 0.01* | 9655 | Current tried to quit | 0.16 | 0.42 | 0.30 | 2295 |
| Never-smoker | 0.01 | 0.01 | 0.92 | 17645 | Current (no quit) | 0.11 | 0.19 | 0.61 | 3825 |
| Total (n) | 5725 | 9675 | 16550 | 34280 | Total (n) | 9405 | 1955 | 3290 | 15915 |
Transitions into or out of refused, don't know or missing responses are not included in the table, but are included in probability denominators. Italicised probabilities present no change (stability) between waves.
*Nonsense transitions (current to never, ex-smokers to never-smokers), less than 1% of all observations.