S1 Raw data -

Objectives
The period of entry into university represents one of vulnerability to substance use for university students. The goal of this study is to document the 12-month prevalence of substance use disorders among first year university students in Kenya, and to test whether there is an association between substance use disorders and mental disorders.
Methods
This was a cross-sectional online survey conducted in 2019 and 2020 as part of the World Health Organization’s World Mental Health International College Student (WMH-ICS) survey initiative. A total of 334 university students completed the survey. Descriptive statistics were used to summarize the demographic characteristics of the participants. Multivariate logistic regression was used to assess the association between substance use disorder and mental disorders after adjusting for age and gender.
Results
The 12-month prevalence for alcohol use disorder was 3.3%, while the 12-month prevalence for other substance use disorder was 6.9%. Adjusting for age and gender, there was an association between any substance use disorder and major depression, generalized anxiety disorder, bipolar 1 disorder, intermittent explosive disorder, social anxiety disorder, suicidal ideation, suicide attempt, and non-suicidal self-injury.
Conclusion
These findings highlight the need to institute policies and interventions in universities in Kenya that address substance use disorders and comorbid mental disorders among first-year students.

研究目的
大学入学阶段是大学生物质使用易感性较高的时期之一。本研究旨在明确肯尼亚大一学生群体中物质使用障碍（Substance Use Disorders）的12个月患病率，并检验物质使用障碍与精神障碍（Mental Disorders）之间是否存在关联。

研究方法
本研究为2019至2020年间开展的横断面线上调查，隶属于世界卫生组织（World Health Organization, WHO）世界精神卫生国际大学生（World Mental Health International College Student, WMH-ICS）调查项目。共计334名大学生完成了本次调查。研究采用描述性统计方法总结受试者的人口学特征；在校正年龄与性别因素后，通过多因素logistic回归分析物质使用障碍与精神障碍之间的关联。

研究结果
酒精使用障碍（Alcohol Use Disorders）的12个月患病率为3.3%，其他类型物质使用障碍的12个月患病率为6.9%。在校正年龄与性别因素后，任意类型物质使用障碍与重性抑郁障碍（Major Depression）、广泛性焦虑障碍（Generalized Anxiety Disorder）、双相I型障碍（Bipolar I Disorder）、间歇性爆发障碍（Intermittent Explosive Disorder）、社交焦虑障碍（Social Anxiety Disorder）、自杀意念（Suicidal Ideation）、自杀未遂（Suicide Attempt）及非自杀性自伤（Non-Suicidal Self-Injury）均存在关联。

研究结论
上述研究结果表明，肯尼亚各高校需制定并推行相关政策与干预措施，以解决大一学生群体的物质使用障碍及其共病精神障碍问题。