TY - JOUR
T1 - Detecting longitudinal patterns of daily smoking following drastic cigarette reduction
AU - Hoeppner, Bettina B.
AU - Goodwin, Matthew S.
AU - Velicer, Wayne F.
AU - Mooney, Marc E.
AU - Hatsukami, Dorothy K.
PY - 2008/5
Y1 - 2008/5
N2 - To enhance prolonged smoking cessation or reduction, a better understanding of the process of change is needed. This study examines daily smoking rates following the end of an intensive smoking reduction program originally designed to evaluate the relationship of tobacco biomarkers with reduced levels of smoking. A novel pattern-oriented approach called time series-based typology is used to detect homogeneous smoking patterns in time-intensively (i.e., 40 occasions) observed smokers (n = 57), who were predominantly Caucasian (94.7%), male (52.6%), and on average 47.9 years old (SD = 11.3). The majority of the smokers exhibited a change in their daily smoking behavior over the course of 40 days with 47.4% increasing and 40.4% decreasing the number of cigarettes smoked per day, which is contrary to the results a group level approach would have found. Very few smokers (12.3%) maintained their average smoking rate, and exhibited an externally controlled smoking pattern. Trajectory type could be predicted by temporally proximal motivation and self-efficacy variables ((F(4, 106) =3.46, p = .011, η2 = .115), underscoring their importance in maintaining reduced smoking rates. Time series-based typology demonstrated good sensitivity to the identification of meaningfully different trajectories.
AB - To enhance prolonged smoking cessation or reduction, a better understanding of the process of change is needed. This study examines daily smoking rates following the end of an intensive smoking reduction program originally designed to evaluate the relationship of tobacco biomarkers with reduced levels of smoking. A novel pattern-oriented approach called time series-based typology is used to detect homogeneous smoking patterns in time-intensively (i.e., 40 occasions) observed smokers (n = 57), who were predominantly Caucasian (94.7%), male (52.6%), and on average 47.9 years old (SD = 11.3). The majority of the smokers exhibited a change in their daily smoking behavior over the course of 40 days with 47.4% increasing and 40.4% decreasing the number of cigarettes smoked per day, which is contrary to the results a group level approach would have found. Very few smokers (12.3%) maintained their average smoking rate, and exhibited an externally controlled smoking pattern. Trajectory type could be predicted by temporally proximal motivation and self-efficacy variables ((F(4, 106) =3.46, p = .011, η2 = .115), underscoring their importance in maintaining reduced smoking rates. Time series-based typology demonstrated good sensitivity to the identification of meaningfully different trajectories.
KW - Harm reduction
KW - Idiographic research
KW - Longitudinal smoking patterns
KW - Time series analysis
KW - Time series-based typology
UR - http://www.scopus.com/inward/record.url?scp=39949083027&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=39949083027&partnerID=8YFLogxK
U2 - 10.1016/j.addbeh.2007.11.005
DO - 10.1016/j.addbeh.2007.11.005
M3 - Article
C2 - 18191907
AN - SCOPUS:39949083027
SN - 0306-4603
VL - 33
SP - 623
EP - 639
JO - Addictive Behaviors
JF - Addictive Behaviors
IS - 5
ER -