Table 5.

Change in status and number of cigarettes smoked a day from last record pre-acute coronary syndrome (ACS) to first record within 3 months of ACS.

	Post-ACS (first record within 3 months of ACS)
Pre-ACS	Ex-smoker	Up to 5 a day	6–10 a day	11–15 a day	16–20 a day	Over 20 a day	Unknown no.
Up to 5 a day	60	134	7	1	2	1	N/A
6–10 a day	76	22	126	5	7	0	N/A
11–15 a day	46	7	10	64	3	1	N/A
16–20 a day	76	9	9	7	112	5	N/A
Over 20 a day	22	4	4	3	5	55	N/A
Unknown no.	18	4	4	0	1	2	53

N/A: not applicable.