Predictors of Transition in Smoking Stages in Iranian Adolescents: A Probabilistic Discrete Event System Model

Khosravi, Ahmad; Holakouie-Naieni, Kourosh; Mansournia, Mohammad Alì; Mahmoodi, Mahmood; Pouyan, Ali A.

doi:10.17795/ijpbs-7670

Cited by 2 publications

(3 citation statements)

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“…In this study, the highest OR was found for the relationship between having an intimate drug-abusing friend and belonging to classes 2 or 3. Previous studies have recognized the importance of this factor, which has a positive relationship with the onset of drug abuse, increased drug abuse, and other high-risk behaviors [ 32 , 38 , 43 ].…”

Section: Discussionmentioning

confidence: 99%

Substance abuse behaviors among university freshmen in Iran: a latent class analysis

et al. 2018

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OBJECTIVESSubstance abuse behaviors among university freshmen in Iran are poorly understood. This study aimed to identify, for the first time, subgroups of university freshmen in Iran on the basis of substance abuse behaviors. Moreover, it examined the effects of socio-demographic characteristics on membership in each specific subgroup.METHODSData for the study were collected cross-sectionally in December 2013 and January 2014 from 4 major cities in Iran: Tabriz, Qazvin, Karaj, and Khoramabad. A total of 5,252 first-semester freshmen were randomly selected using a proportional cluster sampling methodology. A survey questionnaire was used to collect data. Latent class analysis (LCA) was performed to identify subgroups of students on the basis of substance abuse behaviors and to examine the effects of students’ socio-demographic characteristics on membership in each specific subgroup.RESULTSThe LCA procedure identified 3 latent classes: the healthy group; the hookah experimenter group; and the unhealthy group. Approximately 82.8, 16.1, and 2.1% of students were classified into the healthy, hookah experimenter, and unhealthy groups, respectively. Older age, being male, and having a family member or a close friend who smoked increased the risk of membership in classes 2 and 3, compared to class 1.CONCLUSIONSApproximately 2.1% of freshmen exhibited unhealthy substance abuse behaviors. In addition, we found that older age, being male, and having a close friend or family member who smoked may serve as risk factors for substance abuse behaviors.

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Section: Discussionmentioning

confidence: 99%

Substance abuse behaviors among university freshmen in Iran: a latent class analysis

et al. 2018

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“…In contrast, the traditional models are restricted to a single probability of transition and do not produce the statistical significance for the effect of the covariates. 7 , 8 , 11 , 16 Furthermore, GMMs are not limited to the restricting statistical assumptions for estimating the parameters, which may not be satisfied in many practical situations. 17 - 19 These features propose GMMs in studies aiming at assessing transition through smoking stages, taking an advantage over the conventional procedures.…”

Section: Discussionmentioning

confidence: 99%

“…Secondly, they are restricted to the certain statistical assumptions in the modeling process. 8 , 9 , 16 On the other hand, the advantages of newly established model, are: (1) GMMs have less bias and error, (2) give more detailed information, and (3) produce findings that are more accurate. 17 - 19 GMMs also relaxed some of the restricting statistical assumptions of the traditional models, so GMMs are feasible in practice.…”

Section: Introductionmentioning

confidence: 99%

Differentiating between girls and boys in transition through smoking stages: A sex-specific growth mixture modeling

Jafari

MohammadpourAsl

Jafarabadi

2021

Health Promot Perspect

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Background: Smoking is a complex process, and adolescents pass through a number of different stages on the way to become smokers and it is sex-dependent. Methods: In this cohort study, the illustrative samples of 10th-grade students (2241 girls and 2956 boys) were assessed using a multistage sampling in Tabriz, Iran. The main variables of the study were smoking status, intention to start smoking, and smoking during the past week/ month, which were collected using a valid and reliable instrument. Sex-specific GMMs were fitted to assess the transition through smoking stages. Results: GMMs lead in a 2-class optimal model: "Occasional/Intending smokers" and "Non-smokers". GMMs indicated that girls had lower levels of smoking status, intention to start smoking, smoking during the past week/month in both classes (significant and negative intercepts: -8.5 to -0.6). In addition, transitions toward higher levels of smoking status, intention to start smoking, smoking during the past week/month were observed in both classes for boys, but in the second class for girls (significant and positive slopes: 0.2 to 2.7). Conclusion: This study highlighted the importance of stopping the initiation and avoiding transition through smoking stages with special sex-specific planning in the future.

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Predictors of Transition in Smoking Stages in Iranian Adolescents: A Probabilistic Discrete Event System Model

Abstract: Background: Cigarette smoking is one of the most important public health problems. Objectives: This study determined the personal and environmental predictors of transition across smoking stages using cross sectional data.

Cited by 2 publications

References 24 publications

Substance abuse behaviors among university freshmen in Iran: a latent class analysis

Substance abuse behaviors among university freshmen in Iran: a latent class analysis

Differentiating between girls and boys in transition through smoking stages: A sex-specific growth mixture modeling

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