Guo Boliang, Aveyard Paul, Fielding Antony, Sutton Stephen
Division of Primary Care & Public Health, University of Birmingham, Birmingham B15 2TT, UK.
Int J Behav Med. 2009;16(2):158-63. doi: 10.1007/s12529-008-9021-5. Epub 2009 Feb 19.
The transtheoretical model is a framework to explain smoking uptake and cessation in adolescence. Decisional balance is proposed as a driver of stage movement.
The purpose of this study was to examine the factor structure and measurement equivalence/invariance (ME/I) of the decisional balance scale.
In this study, we used confirmatory factor analysis followed by measurement equivalence/invariance testing to examine the factorial validity of the decisional balance scale in adolescent smokers and nonsmokers.
Unlike previous studies, we found that a four-factor solution splitting cons into esthetic and health cons significantly improved the fit of model to the data. ME/I testing showed that the same structure and measurement model held for both smokers and nonsmokers, girls and boys, and across the three occasions the scale was administered.
Cons showed strong evidence that it constituted two separate first order factors. Decisional balance for smoking in adolescence has good evidence of factorial validity.
跨理论模型是一个用于解释青少年吸烟行为及戒烟过程的框架。决策平衡被认为是阶段转变的驱动因素。
本研究旨在检验决策平衡量表的因子结构以及测量等价性/不变性（ME/I）。
在本研究中，我们首先采用验证性因子分析，随后进行测量等价性/不变性检验，以考察决策平衡量表在青少年吸烟者和非吸烟者中的因子效度。
与以往研究不同，我们发现将负性因素分为审美和健康方面的负性因素的四因素模型能显著提高模型与数据的拟合度。ME/I检验表明，吸烟者与非吸烟者、女孩与男孩以及量表施测的三个不同场合，都具有相同的结构和测量模型。
有充分证据表明负性因素构成两个独立的一阶因子。青少年吸烟的决策平衡具有良好的因子效度证据。
