Yan Guo

Yan Guo
Sun Yat-Sen University | SYSU · Department of Medical Statistics and Epidemiology

Doctor of Philosophy

About

41
Publications
6,513
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687
Citations
Introduction
Skills and Expertise
Additional affiliations
October 2009 - October 2011
Wayne State University
Position
  • PostDoc Position

Publications

Publications (41)
Article
Full-text available
Background: The effectiveness of psychosocial interventions on quality of life (QOL) among people living with HIV has been validated, including mobile health (mHealth) interventions. However, it is unclear which components of such interventions account for these effects. Objective: This study aims to examine positive coping as a potential mediator...
Preprint
BACKGROUND Emerging studies have shown the effectiveness of mobile health (mHealth) interventions on reducing depressive symptoms among people living with HIV (PLWH). Most of these studies only had short-term follow-up with limited data on long-term effects. OBJECTIVE The purpose of this study was to assess the long-term effects of a randomized co...
Article
Background: Emerging studies have shown the effectiveness of mobile health (mHealth) interventions in reducing depressive symptoms among people living with HIV. Most of these studies included only short-term follow-up, with limited data on long-term effects. Objective: The purpose of this study is to assess the long-term effects of a randomized...
Article
Full-text available
Background The dose–response relationship between patient engagement and long-term intervention effects in mobile health (mHealth) interventions are understudied. Studies exploring long-term and potentially changing relationships between patient engagement and health outcomes in mHealth interventions are needed. Objective This study aims to examin...
Article
Full-text available
Background Mobile health (mHealth) interventions have been shown to effectively improve the quality of life (QOL) among people living with HIV. However, little is known about the long-term effects of mHealth interventions. Objective This study aims to explore the intervention mechanisms of a social media–based intervention, Run4Love, on the QOL of...
Article
Full-text available
Background Post-esophagectomy patients often experience a clinically relevant deterioration of quality of life after esophagectomy due to malnutrition, impaired exercise capacity, and psychological problems. The widespread use of mobile health (mHealth) has been increasingly promising for interdisciplinary healthcare givers to deliver efficient and...
Preprint
BACKGROUND Mobile health (mHealth) interventions have been shown to effectively improve quality of life (QOL) among people living with HIV (PLWH). However, little is known about the mechanisms of how mHealth interventions take effects, especially in the long term. OBJECTIVE This study aimed to explore the intervention mechanisms of a social media-...
Preprint
BACKGROUND The effectiveness of psychosocial interventions on quality of life (QOL) among people living with HIV has been validated, including mobile health (mHealth) interventions. However, it is unclear which components of such interventions account for these effects. OBJECTIVE This study aims to examine positive coping as a potential mediator o...
Preprint
BACKGROUND The dose–response relationship between patient engagement and long-term intervention effects in mobile health (mHealth) interventions are understudied. Studies exploring long-term and potentially changing relationships between patient engagement and health outcomes in mHealth interventions are needed. OBJECTIVE This study aims to examin...
Article
Full-text available
Background: Associations between higher levels of patient engagement and better health outcomes have been found in face-to-face interventions; studies on such associations with mobile health (mHealth) interventions have been limited and the results are inconclusive. Objective: The objective of this study is to investigate the relationship between p...
Article
Full-text available
Background Patients with esophageal cancer often experience clinically relevant deterioration of quality of life (QOL) after esophagectomy owing to malnutrition, lack of physical exercise, and psychological symptoms. Objective This study aimed to evaluate the feasibility, safety, and efficacy of a comprehensive intervention model using a mobile hea...
Preprint
BACKGROUND Associations between higher levels of patient engagement and better health outcomes have been found in face-to-face interventions; studies on such associations with mobile health (mHealth) interventions have been limited and the results are inconclusive. OBJECTIVE The objective of this study is to investigate the relationship between pa...
Article
Full-text available
Background The clinical manifestations and factors associated with the severity of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections outside of Wuhan are not clearly understood. Methods All laboratory-confirmed cases with SARS-Cov-2 infection hospitalized and monitored in Guangzhou Eighth People’s Hospital were recruited from...
Preprint
BACKGROUND With increasing outbreaks of coronavirus disease 2019 (COVID-19) worldwide, quarantine strategies have been implemented in many countries including China. Psychological impacts of large scale, long-term quarantine are critical to assess in a timely manner. OBJECTIVE To investigate mental health disorders and risk factors for people unde...
Article
Full-text available
Background: People undergoing mass home- and community-based quarantine are vulnerable to mental health disorders during the COVID-19 outbreaks, but few studies have evaluated associated psychosocial factors. Objective: This study aimed to estimate the prevalence of anxiety or depressive symptoms and identify associated demographic and psychosoc...
Article
Full-text available
A dynamic residential community-based quarantine strategy: China’s experience in fighting against COVID-19 - Yan Guo, Yiran Li, Aliza Monroe-Wise, Sai-Ching Jim Yeung, Yixiang Huang
Article
Full-text available
Despite a strong evidence on the negative association between HIV-related stigma and quality of life (QoL), few studies have examined the indirect effects of this relationship. This study aimed to examine the association between HIV-related stigma and QoL and the indirect effects of positive coping and perceived stress in people living with HIV and...
Preprint
BACKGROUND Esophageal cancer patients often experience a clinically relevant deterioration of quality of life (QOL) after esophagectomy due to malnutrition, lack of physical exercise, and psychological symptoms. OBJECTIVE This study aims to evaluate the feasibility, safety, and efficacy of a comprehensive intervention model using an mHealth system...
Article
Full-text available
Background People living with HIV (PLWH) have high rates of depressive symptoms. However, only a few effective mental health interventions exist for this vulnerable population. Objective The aim of this study was to assess the efficacy of a WeChat-based intervention, Run4Love, with a randomized controlled trial among 300 people living with HIV and...
Article
Full-text available
Background Although several studies have investigated the effects of mobile health (mHealth) interventions on depression among people living with HIV, few studies have explored mediators of mHealth-based interventions to improve mental health in people living with HIV. Identifying influential mediators may enhance and refine effective components of...
Article
Full-text available
Few studies have examined the relationship between inconsistent condom use and sexual partnership characteristics among people living with HIV (PLWH). The current study focused on such association and its gender differences. The study was conducted in a large hospital in South China in 2013. A total of 320 dyads (PLWH indexes and their sexual partn...
Preprint
BACKGROUND People living with HIV and depression (PLWHD) have high rates of suicide. Studies of mHealth interventions have shown feasibility, acceptability, and efficacy in improving mental health in PLWHD. However, few studies have examined the effects and mechanisms of mHealth interventions on suicide. OBJECTIVE This study was designed to examin...
Article
Full-text available
Background: People living with HIV and depression have high rates of suicide. Studies of mobile health (mHealth) interventions have shown feasibility, acceptability, and efficacy in improving mental health in people living with HIV and depression. However, few studies have examined the mechanisms and effects of mHealth interventions on suicide. O...
Article
Full-text available
Unemployment is associated with depression in people living with HIV (PLWH). However, few studies have examined the effects of unemployment on PLWH with different levels of depression. The current study explores the plausible differential effects of unemployment on the different percentiles of depression in PLWH employing a quantile regression (QR)...
Article
Full-text available
Background: Most people living with HIV (PLWH) reside in middle- and low-income countries with limited access to health services. Thus, cost-effective interventions that can reach a large number of PLWH are urgently needed. Objective: The objective of our study was to assess the feasibility and acceptability of an mHealth intervention among PLWH i...
Article
Full-text available
Background: People living with HIV (PLWH) suffer from high rates of mental illness; but targeted effective interventions are limited, especially in developing countries. High penetration of smartphone usage and widespread acceptance of social media applications provide an unprecedented opportunity for mobile-based health interventions (mHealth int...
Article
Full-text available
Background: Most people living with HIV (PLWH) reside in middle- and low-income countries with limited access to health services. Thus, cost-effective interventions that can reach a large number of PLWH are urgently needed. Objective: The objective of our study was to assess the feasibility and acceptability of an mHealth intervention among PLWH...
Article
Full-text available
Background Previous studies have shown positive association between HIV-related stigma and depression, suicidal ideation, and suicidal attempt among people living with HIV/AIDS (PLWH). But few studies have examined the mechanisms among HIV-related stigma, depression, and suicidal status (suicidal ideation and/or suicidal attempt) in PLWH. The curre...
Article
The number of people living with HIV/AIDS (PLWHA) has been increasing in China. Previous studies have examined the association between social norms and risk behaviors among high-risk populations for HIV infection. However, little is known about social norms and condom use among people living with HIV/AIDS (PLWHA). This study sought to investigate t...
Article
A 26-year-old Indian male travelling from Liberia to India after being treated for Ebola Virus Disease (EVD) was isolated at Delhi airport, even though he was symptom-free, because his semen was positive for Ebola virus. His blood, saliva and urine samples had tested negative for Ebola. There is no conclusive evidence of sexual transmission of EVD...
Article
In India a symptom-free man returning from Liberia after being treated for Ebola virus disease (EVD) was recently put into isolation because his semen was still positive for the virus.1 2 Even though blood, saliva, and urine samples gave negative results, he will remain in isolation until his semen also tests negative, which could take …
Article
Full-text available
Background: Small- and medium-sized enterprises (SMEs) generate nearly 80% of the jobs in China, but the dangerous work environment often found in these enterprises poses a major concern for public health. Psychosocial pressure and mental health problems among the workers are also common in SMEs. However, mental health of workers in SMEs is largel...
Article
Full-text available
To explore the relationship between health-related quality of life (HRQOL) status and associated factors among rural-to-urban migrants in China. A cross-sectional survey was conducted with 856 rural-to-urban migrants working at small- and medium-size enterprises (SMEs) in Shenzhen and Zhongshan City in 2012. Andersen's behavioral model was used as...
Article
The purpose of this paper is to assess the effectiveness of school-based intervention aimed to increase knowledge, to change attitudes and to reduce smoking-related behavior in both Linzhi Tibetan and Guangzhou Han middle school students in China. A concurrent intervention study was conducted in both Linzhi and Guangzhou. Two schools were randomly...
Article
The purpose of the study is to explore the disclosure of same-sex behavior by men who have sex with men (MSM) to different groups of people (i.e. family, friends, coworkers, and doctors) and the associated sociodemographic, behavioral, and psychosocial factors. A self-administered survey was conducted among 307 migrant MSM, aged 18-30, in Beijing i...
Article
Full-text available
The number of children losing one or both parents to HIV/AIDS has continued to rise in the past decade, with most of them being school-aged children. This study reviews global literature on the effects of HIV/AIDS (e.g., parental HIV-related illness or death) on children's schooling. Systematic review procedures generated 23 studies for examination...
Article
Full-text available
Data from 307 young migrant men who have sex with men (MSM) in Beijing were analyzed to examine bisexual behavior and the associated sociodemographic and behavioral factors among Chinese young migrant MSM. More than one-fourth (27%) of the MSM were also concurrently engaged in sexual behavior with women (MSMW). Among MSMW, 8.4% were infected with H...
Article
Full-text available
Sample representativeness remains one of the challenges in effective HIV/STD surveillance and prevention targeting men who have sex with men (MSM) worldwide. Although convenience samples are widely used in studies of MSM, previous studies suggested that these samples might not be representative of the broader MSM population. This issue becomes even...
Conference Paper
Background & Objectives: One of the challenges in HIV/STD surveillance and prevention targeted at MSM in China is the potential selection bias. Despite the consistently documented differences in demographic characteristics and sexual risk among MSM recruited by different sampling methods, systematic variations in HIV and syphilis infections and dem...
Article
Full-text available
HIV prevalence among men who have sex with men (MSM) has increased significantly in China since early 2000, with MSM accounting for 32.5% of the newly infected HIV cases in China in 2009. This study reviews a total of 33 studies published in English literature on MSM in China from 2000 to 2009. Existing studies indicated that frequently MSM in Chin...