Table 2.

Reasons for Quitting Scale

	Schizophrenia	Normal Controls	Statistics	Adjusted P Value
Total score	37.7 ± 18.8	41.6 ± 16.1	t = 1.57, df = 196, P = .12	P = .14
Level of intrinsic relative to extrinsic motivation	1.0 ± 1.4	1.7 ± 1.5	t = 3.67, df = 196, P = .0003	P = .002
Health concerns (intrinsic)	2.2 ± 1.3	2.8 ± 1.0	t = 3.43, df = 196, P = .0007	P = .002
Self-control (intrinsic)	2.0 ± 1.1	2.2 ± 1.1	t = 1.33, df = 196, P = .18	P = .18
Immediate reinforcement (extrinsic)	2.0 ± 1.1	2.3 ± 0.9	t = 2.39, df = 196, P = .02	P = .04
Social pressure (extrinsic)	1.3 ± 1.1	1.0 ± 1.0	t = −2.17, df = 196, P = .03	P = .047

Note: The Reasons for Quitting Scale scoring: 0, not at all true; 1, a little true; 2, moderately true; 3, quite true; and 4, extremely true. All dimensions contain 5 questions that ask, eg, “I would consider quitting smoking because I am concerned that I will suffer from a serious illness if I don't quit smoking.” Higher scores indicated a greater consideration of the dimension in quitting smoking. Post hoc comparisons included inpatient and outpatient differences. Immediate reinforcement was rated higher in the outpatients (2.1 ± 1.1) compared with inpatient groups (1.7 ± 1.0) (t = 2.5, df = 196, adjusted P = .035). No other differences were noted by hospitalization status.