Effects of a text messaging smoking cessation intervention amongst online help-seekers and primary health care visitors: findings from a randomised controlled trial

Table 3 Descriptive statistics of primary and secondary outcomes

	Intervention^a	Control^a
Three months post-randomisation
8-week prolonged abstinence	32.9% (110/334)	18.9% (66/349)
4-week point prevalence of smoking abstinence	28.4% (95/334)	19.0% (66/348)
7-day point prevalence of smoking abstinence	47.2% (116/246)	30.2% (83/275)
Cigarettes smoked weekly (amongst smokers only)	60.9 (47.8) n = 117	82.5 (49.1) n = 188^b
Quit attempts since baseline	5.5 (14.4) n = 213	2.3 (4.7) n = 250
Use of additional support since baseline	0.7 (0.6) n = 334	0.7 (0.5) n = 349
Six months post-randomisation
5-month prolonged abstinence	29.3% (94/321)	14.6% (47/323)
4-week point prevalence of smoking abstinence	27.8% (89/320)	20.1% (65/323)
7-day point prevalence of smoking abstinence	50.9% (115/226)	28.1% (70/249)
Cigarettes smoked weekly (amongst smokers only)	68.6 (45.4) n = 90	84.5 (53.1) n = 164^b
Quit attempts since baseline	3.6 (9.1) n = 186	3.3 (9.9) n = 221
Use of additional support since baseline	0.6 (0.6) n = 221	0.7 (0.6) n = 323

^aFor binary variables: proportion of events using available data (count of events/count of available data). For numeric data: mean (SD) using available data, and n = count of available data
^bThe notable difference in available data between groups for cigarettes smoked weekly is due to more participants in the control group continuing to smoke. Only smokers were asked this question

ISSN: 1741-7015