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Dive into the research topics where Yvonne Y. C. Lo is active.

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Featured researches published by Yvonne Y. C. Lo.


Diabetes Research and Clinical Practice | 2013

A short message service (SMS) intervention to prevent diabetes in Chinese professional drivers with pre-diabetes: a pilot single-blinded randomized controlled trial.

Carlos K. H. Wong; Colman S.C. Fung; Shing-Chung Siu; Yvonne Y. C. Lo; Ka-Wai Wong; Daniel Tik-Pui Fong; Cindy Lo Kuen Lam

AIM To determine the efficacy of delivering short-message service (SMS) to provide diabetes-related information in reducing the risk of developing diabetes in Chinese professional drivers with pre-diabetes. METHODS A pilot single-blinded randomized controlled trial was conducted in Hong Kong between 05/2009 and 04/2012. Professional drivers with impaired glucose tolerance (IGT) were randomly allocated to either a SMS group receiving messages comprising knowledge and lifestyle modification on diabetes or to a control group with usual care. Primary outcomes were the incidence rate of diabetes mellitus over 12 and 24 months period. RESULTS Fifty-four, out of 104 professional drivers recruited, were randomly allocated to intervention group. Fewer subjects developed diabetes at 12 months in intervention group (5.56%) compared to control group (16.00%). Relative risk (RR) of diabetes onset was 0.35 (95%CI: 0.10–1.24) and the number needed to treat (NNT) for preventing one diabetes was 9.57. At 24 months, RR increased to 0.62 (95%CI: 0.24–1.61) with a NNT of 10.58. Logistic regression showed a significant odds ratio of 0.04 (P = 0.021) for intervention group compared to control group at 12-month follow-up for completers and a non-significant odds ratio of 0.34 (P = 0.303) at 24-month follow-up. CONCLUSIONS The SMS program proved to have potential to reduce the risk of developing diabetes at 12 months but additional measures should be integrated to prevent or delay disease progression.


Journal of Occupational and Environmental Medicine | 2012

The impact of work nature, lifestyle, and obesity on health-related quality of life in Chinese professional drivers.

Carlos K. H. Wong; Colman S.C. Fung; Shing-Chung Siu; Ka-Wai Wong; Ka-Fai Lee; Yvonne Y. C. Lo; Daniel Tik-Pui Fong; Cindy Lo Kuen Lam

Objective: To assess the association of work nature, lifestyle and obesity with health-related quality of life (HRQOL) in professional drivers. Methods: A total of 3376 Chinese professional drivers aged 18 to 70 years were recruited to assess the HRQOL by SF-12 summary scores (Physical Component Summary [PCS]; Mental Component Summary [MCS]), and collect data for work nature, lifestyle, and body mass index. Factors associated with HRQOL were examined by multiphase regression analyses. Results: Professional drivers reported poorer physical and mental HRQOL than the general population. Shift work and lorry driving had significant negative effect on HRQOL. Obesity was associated with lower PCS but higher MCS. Conclusions: HRQOL of professional drivers tended to be low, especially among lorry drivers and shift drivers. Health intervention programs should promote regular exercise, healthy eating, no smoking, and weight control, which are modifiable factors improving HRQOL.


Health and Quality of Life Outcomes | 2013

The associations of body mass index with physical and mental aspects of health-related quality of life in Chinese patients with type 2 diabetes mellitus: results from a cross-sectional survey.

Carlos K. H. Wong; Yvonne Y. C. Lo; Winnie Wong; Colman S.C. Fung

BackgroundThis study aimed to determine the associations of various clinical factors with generic health-related quality of life (HRQOL) scores among Hong Kong Chinese patients with type 2 diabetes mellitus (T2DM) in the outpatient primary care setting using the short-form 12 (SF-12).MethodsA cross-sectional survey of 488 Chinese adults with T2DM recruited from a primary care outpatient clinic was conducted from May to August 2008. Data on the standard Chinese (HK) SF-12 Health Survey and patients’ socio-demographics were collected from face-to-face interviews. Glycaemic control, body mass index (BMI), chronic co-morbidities, diabetic complications and treatment modalities were determined for each patient through medical records. Associations of socio-demographic and clinical factors with physical component summary (PCS-12) and mental component summary scores (MCS-12) were evaluated using multiple linear regression.ResultsThe socio-demographic correlates of PCS-12 and MCS-12 were age, gender and BMI. After adjustment for socio-demographic variables, the BMI was negatively associated with PCS-12 but positively associated with MCS-12. The presence of diabetic complications was associated with lower PCS-12 (regression coefficient:-3.0 points, p < 0.05) while being on insulin treatment was associated with lower MCS-12 (regression coefficient:-5.8 points, p < 0.05). In contrast, glycaemic control, duration of T2DM and treatment with oral hypoglycaemic drugs were not significantly associated with PCS-12 or MCS-12.ConclusionsAmong T2DM subjects in the primary care setting, impairments in the physical aspect of HRQOL were evident in subjects who were obese or had diabetic complications whereas defects in the mental aspect of HRQOL were observed in patients with lower BMI or receiving insulin injections.


BMC Family Practice | 2011

The epidemiology and natural history of depressive disorders in Hong Kong's primary care

Wy Chin; Cindy Lk Lam; Samuel Ys S. Wong; Yvonne Y. C. Lo; Daniel Yt T. Fong; Tp Lam; Peter W. H. Lee; Josephine G. W. S. Wong; Billy Cf F. Chiu; Kit T Y Chan

BackgroundDepressive disorders are commonly managed in primary care and family physicians are ideally placed to serve as central providers to these patients. Around the world, the prevalence of depressive disorders in patients presenting to primary care is between 10-20%, of which around 50% remain undiagnosed. In Hong Kong, many barriers exist preventing the optimal treatment and management of patients with depressive disorders. The pathways of care, the long term outcomes and the factors affecting prognosis of these patients requires closer examination.Methods/DesignThe aim of this study is to examine the prevalence, incidence and natural history of depressive disorders in primary care and the factors influencing diagnosis, management and outcomes using a cross-sectional study followed by a longitudinal cohort study.Doctors working in primary care settings across Hong Kong have been invited to participate in this study. On one day each month over twelve months, patients in the doctors waiting room are invited to complete a questionnaire containing items on socio-demography, co-morbidity, family history, previous doctor-diagnosed mental illness, recent mental and other health care utilization, symptoms of depression and health-related quality of life. Following the consultation, the doctors provide information regarding presenting problem, whether they think the patient has depression, and if so, whether the diagnosis is new or old, and the duration of the depressive illness if not a new diagnosis. If the doctor detects a depressive disorder, they are asked to provide information regarding patient management. Patients who consent are followed up by telephone at 2, 12, 26 and 52 weeks.DiscussionThe study will provide information regarding cross-sectional prevalence, 12 month incidence, remission rate, outcomes and factors affecting outcomes of patients with depressive disorders in primary care. The epidemiology, outcomes, pathways of care, predictors for prognosis and service needs for primary care patients with depressive disorders will be described and recommendations made for policy and service planning.


BMC Family Practice | 2014

Detection and management of depression in adult primary care patients in Hong Kong: a cross-sectional survey conducted by a primary care practice-based research network

Wy Chin; Kit T Y Chan; Cindy Lk Lam; Samuel Ys Wong; Daniel Yt Fong; Yvonne Y. C. Lo; Tp Lam; Billy Cf F. Chiu

BackgroundThis study aimed to examine the prevalence, risk factors, detection rates and management of primary care depression in Hong Kong.MethodsA cross-sectional survey containing the PHQ-9 instrument was conducted on waiting room patients of 59 primary care doctors. Doctors blinded to the PHQ-9 scores reported whether they thought their patients had depression and their management.Results10,179 patients completed the survey (response rate 81%). The prevalence of PHQ-9 positive screening was 10.7% (95% CI: 9.7%-11.7%). Using multivariate analysis, risk factors for being PHQ-9 positive included: being female; aged ≤34 years; being unmarried; unemployed, a student or a homemaker; having a monthly household income < HKD


International Journal of Geriatric Psychiatry | 2009

Unrecognised psychological problems impair quality of life and increase consultation rates in Chinese elderly patients

Cindy Lo Kuen Lam; Wy Chin; Peter W. H. Lee; Yvonne Y. C. Lo; Daniel Tik-Pui Fong; Tp Lam

30,000 (USD


International Journal of Geriatric Psychiatry | 2009

Brief problem-solving treatment in primary care (pst-pc) was not more effective than placebo for elderly patients screened positive of psychological problems

Cindy Lo Kuen Lam; Daniel Tik-Pui Fong; Wy Chin; Peter W. H. Lee; Elegance T. P. Lam; Yvonne Y. C. Lo

3,800); being a current smoker; having no regular exercise; consulted a doctor or Chinese medical practitioner within the last month; having ≥ two co-morbidities; having a family history of mental illness; and having a past history of depression or other mental illness. Overall, 23.1% of patients who screened PHQ-9 positive received a diagnosis of depression by the doctor. Predictors for receiving a diagnosis of depression included: having higher PHQ-9 scores; a past history of depression or other mental health problem; being female; aged ≥35 years; being retired or a homemaker; being non-Chinese; having no regular exercise; consulted a doctor within the last month; having a family history of mental health problems; and consulted a doctor in private practice.In patients diagnosed with depression, 43% were prescribed antidepressants, 11% were prescribed benzodiazepines, 42% were provided with counseling and 9% were referred, most commonly to a counselor.ConclusionAbout one in ten primary care patients screen positive for depression, of which doctors diagnose depression in approximately one in four. At greatest risk for depression are patients with a past history of depression, who are unemployed, or who have multiple illnesses. Patients most likely to receive a diagnosis of depression by a doctor are those with a past history of depression or who have severe symptoms of depression. Chinese patients are half as likely to be diagnosed with depression as non-Chinese patients. Over half of all patients diagnosed with depression are treated with medications.


Family Practice | 2011

Does vocational training in family medicine have an impact on antibiotic prescribing pattern

Yvonne Y. C. Lo; C.L.K. Lam; Stewart W. Mercer; Daniel Tik-Pui Fong

Studies have shown that psychological problems in elderly patients are often unrecognised in primary care. The aim of this study was to investigate the quality of life and consultation rates of Chinese elderly patients with unrecognised psychological problems in primary care. The prevalence and risk factors of unrecognised psychological problems were also determined.


Experimental Diabetes Research | 2016

Cost-Effectiveness of a Short Message Service Intervention to Prevent Type 2 Diabetes from Impaired Glucose Tolerance

Carlos K. H. Wong; Fangfang Jiao; Shing-Chung Siu; Colman S.C. Fung; Daniel Tik-Pui Fong; Ka-Wai Wong; Esther Yee Tak Yu; Yvonne Y. C. Lo; Cindy Lo Kuen Lam

To evaluate whether screening followed by brief problem‐solving treatment by primary care doctors (PST‐PC) could improve health‐related quality of life (HRQOL) and reduce consultation rates in the elderly.


Frontiers of Medicine in China | 2014

Having a Family Doctor is Associated with Some Better Patient-Reported Outcomes of Primary Care Consultations

Cindy Lo Kuen Lam; Esther Yee Tak Yu; Yvonne Y. C. Lo; Carlos K. H. Wong; Stewart M. Mercer; Daniel Tik-Pui Fong; Albert Lee; Tp Lam; Gabriel M. Leung

BACKGROUND Antibiotics overuse is common and is the major cause of antibiotic resistance. Rational use of antibiotics by GPs is essential as most health problems are exclusively dealt within primary care. Postgraduate family medicine (FM) training has become established in various countries over the last few decades but little is known about the effect of FM training on antibiotic prescribing. OBJECTIVE To determine whether GPs with FM training prescribe less antibiotics than those without training. METHODS GPs working in a pluralistic primary health care system took part in the 2007-08 primary care morbidity and management survey in Hong Kong and collected information of all consecutive patient encounters during predetermined weeks of data collection. Characteristics of GPs, training status, patient morbidity and antibiotic prescribing pattern were compared using multivariate regression analyses. RESULTS One hundred and nine GPs, of whom 67 had FM training, participated in the study and recorded 69 973 health problems. The overall antibiotic prescribing rate was 8.5% and that of GPs with FM training was 5.4% compared with the 13.3% among those without. Multivariate logistic regression showed that GPs with FM training were less likely to prescribe antibiotics (odds ratio 0.68, P < 0.05). They had lower antibiotic prescribing rates when managing upper respiratory tract infections, acute bronchitis and cough but higher in treating infective conjunctivitis and acute laryngitis. CONCLUSIONS Postgraduate FM training in Hong Kong is associated with significantly lower antibiotic prescribing rates. This supports the importance of FM training in rationalizing the use of antibiotics in Hong Kong.

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Tp Lam

University of Hong Kong

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Cindy Lk Lam

University of Hong Kong

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Wy Chin

University of Hong Kong

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Ka-Wai Wong

Tung Wah Eastern Hospital

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Shing-Chung Siu

Tung Wah Eastern Hospital

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