Short-term effectiveness of the national German quitline for smoking cessation: results of a randomized controlled trial

Table 3 Frequencies and chi-square results for the perceived effectiveness of intervention components

Intervention component	Intervention group (n = 305)		Control group (n = 348)		χ²
Intervention component	n	%	n	%	Value	df	p
Motivation to quit smoking/maintain non-smoking					50.09	2	< .001
Did not help	31	10.2	67	19.3
Helped a little	123	40.3	200	57.5
Helped a lot	151	49.5	81	23.3
Management of withdrawal symptoms					26.11	2	< .001
Did not help	61	20.0	124	35.6
Helped a little	154	50.5	166	47.7
Helped a lot	90	29.5	58	16.7
Management of strong cravings for cigarettes					23.67	2	< .001
Did not help	71	23.3	118	33.9
Helped a little	145	47.5	180	51.7
Helped a lot	89	29.2	50	14.4
Management of situations that trigger strong cravings for cigarettes					28.51	2	< .001
Did not help	70	23.0	112	32.2
Helped a little	126	41.3	175	50.3
Helped a lot	109	35.7	61	17.5
Prevention of lapse or relapse					58.54	2	< .001
Did not help	74	24.3	156	44.8
Helped a little	120	39.3	148	42.5
Helped a lot	111	36.4	44	12.6

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