Estimated Failure to Report Unsuccessful Quit Attempts by Type of Cessation Aid: A Population Survey of Smokers in England

Table 2

Matrix of time since the unsuccessful quit attempt started by the length of the quit attempt and percentages estimated failure to report for unaided attempts ().

	Length of unsuccessful quit attempt
	<1 day	1-7 days	8-30 days	31-60 days	61-90 days	91 days to 6 months	>6 months to 1 year
Time since unsuccessful quit attempt started
1-7 days			—	—	—	—	—
Raw	44	58
Standardised	176	232
% failure to report	—	—
8-30 days				—	—	—	—
Raw	46	109	118
Standardised	61	145	157
% failure to report	65%	38%	—
31-60 days					—	—	—
Raw	32	88	136	59
Standardised	32	88	136	59
% failure to report	82%	62%	13%	—
61-90 days						—	—
Raw	27	69	123	47	52
Standardised	27	69	123	47	52
% failure to report	85%	70%	22%	20%	—
91 days to 6 months							—
Raw	18	142	190	89	60	69
Standardised	6	47	63	30	20	23
% failure to report	97%	80%	60%	49%	62%	—
>6 months to 1 year
Raw	61	116	213	87	102	119	281
Standardised	10	19	36	14	17	20	47
% failure to report	94%	92%	77%	76%	67%	13%	—

Raw : the number of respondents indicating an unsuccessful quit attempt; Standardised : the estimated number of unsuccessful quit attempts based on our calculations.