成人烟草自主量表（AUTOS）的验证性因素分析

Confirmatory factor analysis of the Autonomy over Tobacco Scale (AUTOS) in adults.

作者信息

Wellman Robert J, DiFranza Joseph R, O'Loughlin Jennifer

机构信息

Department of Family Medicine and Community Health, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655, United States.

Department of Social and Preventive Medicine, University of Montréal, 3875 St. Urbain, 1st Floor, Montreal, Quebec, H2W 1V1, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Tour St-Antoine, 850 St-Denis, Montreal, Quebec, H2X 0A9, Canada.

出版信息

Addict Behav. 2015 Nov;50:217-21. doi: 10.1016/j.addbeh.2015.06.033. Epub 2015 Jun 23.

DOI:10.1016/j.addbeh.2015.06.033

PMID:26162621

Abstract

INTRODUCTION

The Autonomy over Tobacco Scale (AUTOS), a 12-item self-administered questionnaire, was designed to measure autonomy in three correlated lower-order symptom domains: withdrawal, psychological dependence, and cue-induced craving. The factor structure of the AUTOS remains an open question; confirmatory analyses in adolescents supported the hierarchical structure, while exploratory analyses in adolescents and adults yield single-factor solutions. Here we seek to determine whether the hypothesized hierarchical structure is valid in adult smokers.

METHODS

The AUTOS was administered to two independent convenience samples of adult current smokers: a calibration sample recruited in the US for online studies, and a confirmation sample drawn from the prospective Nicotine Dependence in Teens study in Montreal. We tested competing hierarchical and single-factor models using the robust weighted least-squares (WLSMV) estimation method.

RESULTS

A single-factor model that allowed correlated error variances between theoretically related items fit well in the calibration sample (n = 434), χ(2)SB(52) = 165.71; χ(2)/df = 3.19; SRMR = 0.03; CFI = 0.96; NNFI = 0.95; RMSEA = 0.07 (95% CI: 0.06, 0.08). Reliability of the single factor was high (ωB = 0.92) and construct validity was adequate. In the confirmation sample (n = 335), a similar model fit well:χ(2)SB(53) = 126.94; χ(2)/df = 2.44; SRMR = 0.04; CFI = 0.95; NNFI = 0.93; RMSEA = 0.07 (95% CI: 0.05, 0.08). Reliability of the single factor was again high (ωB = 0.92) and construct validity was adequate.

CONCLUSION

The AUTOS is unidimensional in adult smokers.

摘要

引言

烟草自主量表（AUTOS）是一份包含12个条目的自填式问卷，旨在测量三个相关的低阶症状领域的自主性：戒断、心理依赖和线索诱发的渴望。AUTOS的因子结构仍是一个未解决的问题；对青少年的验证性分析支持其层次结构，而对青少年和成年人的探索性分析得出单因素解决方案。在此，我们试图确定假设的层次结构在成年吸烟者中是否有效。

方法

将AUTOS应用于两个独立的成年现吸烟者便利样本：一个是在美国招募的用于在线研究的校准样本，另一个是从蒙特利尔的青少年尼古丁依赖前瞻性研究中抽取的确认样本。我们使用稳健加权最小二乘（WLSMV）估计方法测试了相互竞争的层次模型和单因素模型。

结果

一个允许理论相关条目之间的误差方差相关的单因素模型在校准样本（n = 434）中拟合良好，χ(2)SB(52) = 165.71；χ(2)/df = 3.19；SRMR = 0.03；CFI = 0.96；NNFI = 0.95；RMSEA = 0.07（95%置信区间：0.06，0.08）。单因素的信度较高（ωB = 0.92），结构效度充足。在确认样本（n = 335）中，一个类似的模型拟合良好：χ(2)SB(53) = 126.94；χ(2)/df = 2.44；SRMR = 0.04；CFI = 0.95；NNFI = 0.93；RMSEA = 0.07（95%置信区间：�.05，0.08）。单因素的信度再次较高（ωB = 0.92），结构效度充足。