Volume 33, Issue 4 pp. 375-384
REVIEW ARTICLE

A systematic review and meta-analysis of the relationship between heavy smoking and probability discounting

Hsien-Jane Chiu MD, PhD

Hsien-Jane Chiu MD, PhD

Taoyuan Psychiatric Center, Minster of Health and Welfare, Taoyuan, Taiwan

Institute of Hospital and Health Care Administration, National Yang-Ming Chiao Tung University, Hsinchu, Taiwan

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Cheuk-Kwan Sun MD, PhD

Cheuk-Kwan Sun MD, PhD

Department of Emergency Medicine, E-Da Dachang Hospital, I-Shou University, Kaohsiung, Taiwan

School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung, Taiwan

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Hung-Yu Wang MD

Hung-Yu Wang MD

Kaohsiung Municipal Kai-Syuan Psychiatric Hospital, Kaohsiung City, Taiwan

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Han-Yun Chang PhD

Han-Yun Chang PhD

Department of Psychology, Asia University, Taichung, Taiwan

Clinical Psychology Center, Asia University Hospital, Taichung, Taiwan

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Chun-Hsien Kuo PhD

Chun-Hsien Kuo PhD

Department of Psychology, Asia University, Taichung, Taiwan

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Yu-Ru Sue MS (Student)

Yu-Ru Sue MS (Student)

Department of Psychology, Asia University, Taichung, Taiwan

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Shu-Hsuan Wu MS (Student)

Shu-Hsuan Wu MS (Student)

Department of Psychology, Asia University, Taichung, Taiwan

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Shih-Yi Tung MS (Student)

Shih-Yi Tung MS (Student)

Department of Psychology, Asia University, Taichung, Taiwan

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Chiao-Yu Lee MS (Student)

Chiao-Yu Lee MS (Student)

Department of Psychology, Asia University, Taichung, Taiwan

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Pin-Yang Yeh PhD

Corresponding Author

Pin-Yang Yeh PhD

Department of Psychology, Asia University, Taichung, Taiwan

Clinical Psychology Center, Asia University Hospital, Taichung, Taiwan

Correspondence Pin-Yang Yeh, PhD, Department of Psychology, College of Medical and Health Science, Asia University; No. 500, Lioufeng Rd, Wufeng, Taichung 41354, Taiwan.

Email: [email protected]

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First published: 30 January 2024

Hsien-Jane Chiu and Cheuk-Kwan Sun contributed equally as the first authors to this study.

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Abstract

Background and Objectives

Probability discounting (PD), which refers to the process of adjusting the value of future probabilities when making decisions, is a method of measuring impulsive decision-making; however, the relationship between PD and nicotine remains unclear. The current study aimed at investigating the significance of PD in individuals who smoke.

Methods

According to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, we searched the PubMed, Embase, PsycINFO, and Web of Science databases for articles comparing individuals who smoke and their tobacco-naïve controls using PD task as outcome measure from inception to May 2023. The main outcome was an overall difference in PD function, while subgroup analysis and meta-regression were conducted to examine the analysis methods and the moderators of PD.

Results

Fourteen studies in total involving 384 individuals who smoke and 493 controls (mean age = 24.32 years, range = 15.1–38.05 years) were analyzed. The effect of smoking on PD was significant (g = 0.51, p = .02). The discounting parameter from the equation, compared to the area under the curve, was more sensitive to estimating PD function (p = .01). Regression analysis showed positive correlations of PD with female percentage, age, and the number of probability options (all p < .04), but not with the number of choices at each probability and maximum reward magnitude (all p > .07). There was no significant publication bias across the eligible studies (p = .09).

Conclusion and Scientific Significance

Our findings, which are the first to demonstrate a smaller PD (i.e., prone to risk-taking) in individuals who smoke, shed light on the appropriate analysis method, gender effect, age, and probability options on the PD function.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflicts of interest.

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