Predictors of participation in a telephone-based Acceptance and Commitment Therapy for smoking cessation study

BMC Public Health

Table 4 Differences in psychological variables and perceived health status between participants and non-participants at baseline (n = 420)

	Non-participants (N = 278)		Participants (N = 142)
	Mean	SD	Mean	SD	T, df	p
Self-perception of quitting
Importance of quitting^a	57.1	27.7	70.5	23.0	t = −4.91 df = 405	<.001***
Difficulty in quitting^b	57.9	29.1	67.8	25.7	t = −3.39 df = 403	<.001***
Confidence in being able to quit^c	54.0	30.1	55.7	23.8	t = −0.61 df = 344.6	.541
Perceived health status^d
Physical Component Summary (PCS)	45.8	9.9	46.1	8.0	t = −0.21 df = 346	.837
Mental Component Summary (MCS)	49.4	11.9	47.9	9.9	t = 1.13 df = 346	.260
ERQ
Cognitive reappraisal	8.8	1.7	8.6	1.6	t = .1.11 df = 317	.267
Expressive suppression	9.5	2.1	9.7	1.9	t = −0.70 df = 323	.485

*p < =.05, **p < =.01, ***p < =.001 by independent sample t-tests
^aBased on a 10-point scale ranging from 0 (not important at all) to 100 (very important)
^bBased on a 10-point scale ranging from 0 (not difficult at all) to 100 (very difficult)
^cBased on a 10-point scale ranging from 0 (no confidence at all) to 100 (very confident)
^dMeasured by the Short Form-12 Health Survey (SF-12). The PCS and MCS scores have a range of 0 to 100 and were designed to have a mean score of 50 and a standard deviation of 10 in a representative sample of the US population

ISSN: 1471-2458