Jun Ma

Summary

Affiliation: Stanford University
Country: USA

Publications

  1. ncbi request reprint Depression treatment during outpatient visits by U.S. children and adolescents
    Jun Ma
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, Palo Alto, California, USA
    J Adolesc Health 37:434-42. 2005
  2. pmc Case management to reduce risk of cardiovascular disease in a county health care system
    Jun Ma
    Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    Arch Intern Med 169:1988-95. 2009
  3. pmc Evaluation of lifestyle interventions to treat elevated cardiometabolic risk in primary care (E-LITE): a randomized controlled trial
    Jun Ma
    Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    BMC Fam Pract 10:71. 2009
  4. pmc Translating the Diabetes Prevention Program lifestyle intervention for weight loss into primary care: a randomized trial
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA 94301, USA
    JAMA Intern Med 173:113-21. 2013
  5. pmc Evaluating clinic and community-based lifestyle interventions for obesity reduction in a low-income Latino neighborhood: Vivamos Activos Fair Oaks Program
    Rebecca L Drieling
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford School of Medicine, Stanford, CA, USA
    BMC Public Health 11:98. 2011
  6. ncbi request reprint Americans are not meeting current calcium recommendations
    Jun Ma
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, Palo Alto, CA 94305, USA
    Am J Clin Nutr 85:1361-6. 2007
  7. doi request reprint An Internet-based osteoporotic fracture risk program: effect on knowledge, attitudes, and behaviors
    Rebecca L Drieling
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford School of Medicine, Stanford, California, USA
    J Womens Health (Larchmt) 20:1895-907. 2011
  8. doi request reprint Obesity and depression in US women: results from the 2005-2006 National Health and Nutritional Examination Survey
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, California, USA
    Obesity (Silver Spring) 18:347-53. 2010
  9. doi request reprint No beneficial effects of pine bark extract on cardiovascular disease risk factors
    Rebecca L Drieling
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California 94305 5411, USA
    Arch Intern Med 170:1541-7. 2010
  10. doi request reprint DASH for asthma: a pilot study of the DASH diet in not-well-controlled adult asthma
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    Contemp Clin Trials 35:55-67. 2013

Collaborators

Detail Information

Publications52

  1. ncbi request reprint Depression treatment during outpatient visits by U.S. children and adolescents
    Jun Ma
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, Palo Alto, California, USA
    J Adolesc Health 37:434-42. 2005
    ..We examined national trends in depression visits and treatment among outpatients aged 7 to 17 years...
  2. pmc Case management to reduce risk of cardiovascular disease in a county health care system
    Jun Ma
    Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    Arch Intern Med 169:1988-95. 2009
    ..Case management (CM) is a systematic approach to supplement physician-centered efforts to prevent cardiovascular disease (CVD). Research is limited on its implementation and efficacy in low-income, ethnic minority populations...
  3. pmc Evaluation of lifestyle interventions to treat elevated cardiometabolic risk in primary care (E-LITE): a randomized controlled trial
    Jun Ma
    Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    BMC Fam Pract 10:71. 2009
    ..Translational research is needed to test real-world models of lifestyle interventions in primary care settings...
  4. pmc Translating the Diabetes Prevention Program lifestyle intervention for weight loss into primary care: a randomized trial
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA 94301, USA
    JAMA Intern Med 173:113-21. 2013
    ..However, it has not been adequately translated into primary care...
  5. pmc Evaluating clinic and community-based lifestyle interventions for obesity reduction in a low-income Latino neighborhood: Vivamos Activos Fair Oaks Program
    Rebecca L Drieling
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford School of Medicine, Stanford, CA, USA
    BMC Public Health 11:98. 2011
    ..There has been limited implementation and evaluation of these strategies, particularly the added benefit of community-based intervention, in low-income Latino populations...
  6. ncbi request reprint Americans are not meeting current calcium recommendations
    Jun Ma
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, Palo Alto, CA 94305, USA
    Am J Clin Nutr 85:1361-6. 2007
    ..Recent research has raised doubts about the efficacy of calcium supplementation in preventing fractures; however, adequate calcium intake remains important...
  7. doi request reprint An Internet-based osteoporotic fracture risk program: effect on knowledge, attitudes, and behaviors
    Rebecca L Drieling
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford School of Medicine, Stanford, California, USA
    J Womens Health (Larchmt) 20:1895-907. 2011
    ..The 2004 Surgeon General's Bone Health Report calls for innovative interventions to reduce osteoporotic fracture. We developed an Internet-based risk- and stage-tailored intervention to promote self-management of fracture risk...
  8. doi request reprint Obesity and depression in US women: results from the 2005-2006 National Health and Nutritional Examination Survey
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, California, USA
    Obesity (Silver Spring) 18:347-53. 2010
    ..These characteristics may identify specific at-risk subgroups of obese women in which hypothesized causal pathways and effective preventive and therapeutic interventions can be profitably investigated...
  9. doi request reprint No beneficial effects of pine bark extract on cardiovascular disease risk factors
    Rebecca L Drieling
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California 94305 5411, USA
    Arch Intern Med 170:1541-7. 2010
    ..Pine bark extract, a dietary supplement source of antioxidant oligomeric proanthocyanidin complexes, has multiple putative cardiovascular benefits. Studies published to date about the supplement have notable methodological limitations...
  10. doi request reprint DASH for asthma: a pilot study of the DASH diet in not-well-controlled adult asthma
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    Contemp Clin Trials 35:55-67. 2013
    ....
  11. doi request reprint Association of general and central obesity and atopic and nonatopic asthma in US adults
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    J Asthma 50:395-402. 2013
    ..To examine the association of body mass index (BMI), waist circumference (WC), and waist-to-height ratio (WHtR) with the prevalence of asthma by atopic status and sex using nationally representative data in the US...
  12. doi request reprint Assessment of body mass index and association with adolescent preventive care in U.S. outpatient settings
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, California 94301, USA
    J Adolesc Health 44:502-4. 2009
    ..The room for improvement remains considerable, and interventions to promote quality preventive care are needed for all adolescents...
  13. ncbi request reprint Implementing cardiac risk-factor case management: lessons learned in a county health system
    Kathy Berra
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA 94305 5705, USA
    Crit Pathw Cardiol 6:173-9. 2007
    ..Implementation of CM, however, is difficult. We have identified lessons learned from a cardiovascular risk reduction CM program that may aid future CM implementation...
  14. doi request reprint Short-term weight loss patterns, baseline predictors, and longer-term follow-up within a randomized controlled trial
    Veronica Yank
    Department of Medicine, Stanford University School of Medicine, California, USA Department of Health Services Research, Palo Alto Medical Foundation Research Institute, California, USA
    Obesity (Silver Spring) 22:45-51. 2014
    ..To examine weight loss patterns and predictors among participants in a primary care-based translation study of the Diabetes Prevention Program lifestyle intervention...
  15. ncbi request reprint Changes in antihypertensive prescribing during US outpatient visits for uncomplicated hypertension between 1993 and 2004
    Jun Ma
    Stanford Prevention Research Center, Stanford, CA 94305 5705, USA
    Hypertension 48:846-52. 2006
    ..Evidence-based guidelines for antihypertensive drug therapy do impact physician prescribing, but the impact seems to be short lived. Future interventions are imperative for promoting long-term adherence to published guidelines...
  16. pmc Underutilization of aspirin persists in US ambulatory care for the secondary and primary prevention of cardiovascular disease
    Randall S Stafford
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California, United States of America
    PLoS Med 2:e353. 2005
    ..We also examined patient and health care provider contributors to the underuse of aspirin...
  17. ncbi request reprint U.S. adolescents receive suboptimal preventive counseling during ambulatory care
    Jun Ma
    Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California 94305 5705, USA
    J Adolesc Health 36:441. 2005
    ..To examine U.S. adolescents' (age 13-18) utilization of ambulatory care and the likelihood of receiving preventive counseling from 1993 through 2000...
  18. doi request reprint Comparison of dynamic block randomization and minimization in randomized trials: a simulation study
    Lan Xiao
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    Clin Trials 8:59-69. 2011
    ....
  19. pmc Adult obesity and office-based quality of care in the United States
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, California, USA
    Obesity (Silver Spring) 17:1077-85. 2009
    ....
  20. ncbi request reprint Impact of clinical trial results on national trends in alpha-blocker prescribing, 1996-2002
    Randall S Stafford
    Stanford Prevention Research Center, Stanford University, Stanford, Calif 94305, USA
    JAMA 291:54-62. 2004
    ..Research on factors that influence prescribing patterns and the extent of change produced by clinical trial findings is limited...
  21. doi request reprint Translating an evidence-based lifestyle intervention program into primary care: lessons learned
    Andrea C Blonstein
    Palo Alto Medical Foundation Research Institute, Palo Alto, CA 94301, USA
    Health Promot Pract 14:491-7. 2013
    ..Challenges remain, and we offer possible solutions to overcome them...
  22. ncbi request reprint Long-term and short-term changes in antihypertensive prescribing by office-based physicians in the United States
    Randall S Stafford
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, Palo Alto, California, USA
    Hypertension 48:213-8. 2006
    ..The recorded long- and short-term trends indicate that evidence-based clinical recommendations had an impact on antihypertensive prescribing practices, but the magnitude of impact may be smaller and of more limited duration than desired...
  23. pmc The Breathe Easier through Weight Loss Lifestyle (BE WELL) Intervention: a randomized controlled trial
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA, USA
    BMC Pulm Med 10:16. 2010
    ..Due to methodological shortcomings of previous studies, however, well-controlled trials are needed to investigate the efficacy of weight loss strategies to improve asthma control in obese individuals...
  24. ncbi request reprint Quality of US outpatient care: temporal changes and racial/ethnic disparities
    Jun Ma
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA 94305 5705, USA
    Arch Intern Med 165:1354-61. 2005
    ..The current national measure set for the quality of health care underrepresents the spectrum of outpatient care and makes limited use of readily available national ambulatory care survey data...
  25. ncbi request reprint Women's awareness and knowledge of hormone therapy post-Women's Health Initiative
    Alison J Rigby
    Division of Pediatric Endocrinology and Diabetes, and the Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA 94305 5208, USA
    Menopause 14:853-8. 2007
    ..The aim of this study was to evaluate women's awareness and knowledge concerning the risks and benefits of hormone therapy...
  26. pmc Measurement of self-monitoring web technology acceptance and use in an e-health weight-loss trial
    Jun Ma
    1 Palo Alto Medical Foundation Research Institute, Palo Alto, California
    Telemed J E Health 19:739-45. 2013
    ..Using data from a randomized controlled trial of two e-health interventions, we evaluated the acceptance and use of a self-monitoring Web site for weight loss...
  27. doi request reprint Variations between obese Latinos and whites in weight-related counseling during preventive clinical visits in the United States
    Jun Ma
    Department of Health Services Research, Palo Alto Medical Foundation Research Institute, Palo Alto, California, USA
    Obesity (Silver Spring) 21:1734-41. 2013
    ..To examine rate differences and explanatory factors for lifestyle counseling to obese Latinos versus non-Hispanic whites (NHWs) in U.S. outpatient settings...
  28. ncbi request reprint US women desire greater professional guidance on hormone and alternative therapies for menopause symptom management
    Jun Ma
    Program on Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA 94305 5705, USA
    Menopause 13:506-16. 2006
    ..We examined 1) current use and perceptions of hormone and alternative therapies for symptom relief among US women, and 2) healthcare provider involvement in women's decision making...
  29. pmc National trends in statin use by coronary heart disease risk category
    Jun Ma
    Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, California, USA
    PLoS Med 2:e123. 2005
    ..Only limited research tracks United States trends in the use of statins recorded during outpatient visits, particularly use by patients at moderate to high cardiovascular risk...
  30. ncbi request reprint Diet and physical activity counseling during ambulatory care visits in the United States
    Jun Ma
    Program of Prevention Outcomes and Practices, Stanford Prevention Research Center, Stanford University, CA 94305 5705, USA
    Prev Med 39:815-22. 2004
    ..We examined time trends and independent correlates of diet and physical activity counseling for American adults with an elevated cardiovascular risk during their outpatient visits...
  31. pmc Baseline obesity status modifies effectiveness of adapted diabetes prevention program lifestyle interventions for weight management in primary care
    Kristen M J Azar
    Palo Alto Medical Foundation Research Institute, 795 El Camino Real, Ames Building, Palo Alto, CA 94301, USA
    Biomed Res Int 2013:191209. 2013
    ..Researchers and clinicians should take an individual's baseline BMI into account when developing or recommending lifestyle focused treatment strategy. This trial is registered with ClinicalTrials.gov NCT00842426. ..
  32. ncbi request reprint National patterns of calcium use in osteoporosis in the United States
    Randall S Stafford
    Stanford Prevention Research Center, Stanford University, Palo Alto, CA 94305, USA
    J Reprod Med 50:885-90. 2005
    ....
  33. ncbi request reprint National trends in asthma visits and asthma pharmacotherapy, 1978-2002
    Randall S Stafford
    Stanford Center for Research in Disease Prevention, Stanford University, Palo Alto, CA 94304, USA
    J Allergy Clin Immunol 111:729-35. 2003
    ..Research is limited on physicians' compliance with recent clinical guidelines for asthma treatment...
  34. pmc Screening, treatment, and control of hypertension in US private physician offices, 2003-2004
    Jun Ma
    Palo Alto Medical Foundation Research Institute, 795 El Camino Real, Stanford, CA 94301, USA
    Hypertension 51:1275-81. 2008
    ..1 to 2.4). In conclusion, more intervention efforts are needed to further reduce the gaps and variations in routine practice in relation to evidence-based practice guidelines for hypertension screening, treatment, and control...
  35. ncbi request reprint [A case-control study on the risk of female breast cancer in Wuhan area]
    Ding Fen Han
    The Zhongnan Hospital, Public Health Department of Wuhan University, Wuhan 430071, China
    Zhonghua Liu Xing Bing Xue Za Zhi 25:256-60. 2004
    ..To investigate the risk factors of female breast cancer and its potential alteration in Wuhan area...
  36. pmc Synthesis and structure-activity relationship studies on tryprostatin A, an inhibitor of breast cancer resistance protein
    Hiteshkumar D Jain
    Department of Chemistry, University of Wisconsin Milwaukee, Milwaukee, WI 53201, USA
    Bioorg Med Chem 16:4626-51. 2008
    ..1 microM) and was equipotent with etoposide, a clinically used anticancer agent. Isothiocyanate analogue 71 and 6-azido analogue 72 were as potent as 1 in the tsFT210 cell proliferation and may be useful tools in labeling BCRP...
  37. ncbi request reprint Self-efficacy, perceived benefits, and weight satisfaction discriminate among stages of change for fruit and vegetable intakes for young men and women
    Tanya M Horacek
    Didactic Program in Dietetics, Syracuse University, NY 13244 1250, USA
    J Am Diet Assoc 102:1466-70. 2002
    ..Young men and women are at different places in the Stages of Change process and few are meeting the vegetable guidelines. Dietary interventions can be most effective if specifically tailored to food group, stage, and gender...
  38. ncbi request reprint [Cost-effectiveness analysis of the current measures for malaria prevention in Yuanjiang valley, Yunnan province]
    Jian Wei Xu
    Yunnan Institute of Malaria Control, Simao 665000
    Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 20:238-41. 2002
    ..To evaluate the cost-effectiveness analysis of the measures currently used for malaria prevention in the region of Yuanjiang River Valley...
  39. ncbi request reprint Bioactive novel polyphenols from the fruit of Manilkara zapota (Sapodilla)
    Jun Ma
    Department of Biological Sciences, Lehman College and The Graduate Center, The City University of New York, 250 Bedford Park Boulevard West, Bronx, New York 10468, USA
    J Nat Prod 66:983-6. 2003
    ..Compound 2 showed high antioxidant activity (IC(50) = 23.5 microM) in the DPPH free-radical assay and displayed cytotoxicity in the HCT-116 and SW-480 human colon cancer cell lines with IC(50) values of 154 and 134 microM, respectively...
  40. ncbi request reprint Mineralocorticoid receptor is overexpressed in cardiomyocytes of patients with congestive heart failure
    Masahiro Yoshida
    Third Department of Internal Medicine, Faculty of Medicine, Fukui, Shimoaituski 23, Yoshida gun, Matsuoka cho, Fukui 910 1193 Japan
    Congest Heart Fail 11:12-6. 2005
    ..25+/-0.19 (p<0.05). These findings suggest that the efficacy of aldosterone antagonists in treating congestive heart failure may be in part through blocking the MRs, which are upregulated in the failing heart...
  41. ncbi request reprint [Staging 915 cases of nasopharyngeal carcinoma after simple radical radiotherapy--checkout of Fuzhou staging system (1992)]
    Jian ming Gao
    State Key Laboratory of Oncology in Southern China, Guangzhou, Guangdong, P R China
    Ai Zheng 24:1165-72. 2005
    ..This study was to validate the rationality of the Fuzhou staging system (1992) of nasopharyngeal carcinoma (NPC), and to provide some suggestions...
  42. ncbi request reprint [Staging 915 cases of nasopharyngeal carcinoma after simple radical radiotherapy (Part II)--Checkout of AJCC/UICC staging system (1997)]
    Jian ming Gao
    State Key Laboratory of Oncology in South China, Guangzhou, Guangdong 510060, P R China
    Ai Zheng 25:257-63. 2006
    ..On the basis of our previous research, this study was to validate the rationality of AJCC/UICC staging system (1997) of nasopharyngeal carcinoma (NPC), and to provide some suggestions...
  43. ncbi request reprint Demographic characteristics and risk behaviors associated with HIV positive injecting drug users in Xinjiang, China
    Yuanzhi Zhang
    Xinjiang Center for Disease Control and Prevention, 48 Beijing South Road, Urumqi 830011, China
    J Infect 54:285-90. 2007
    ....
  44. ncbi request reprint Quality of life of nasopharyngeal carcinoma survivors in Mainland China
    Yong Wu
    Department of Oncology, First Municipal People s Hospital of Guangzhou, Guangzhou Medical College, Guangzhou, People s Republic of China
    Qual Life Res 16:65-74. 2007
    ..We concluded that NPC survivors had worse QoL than the normal population and improving radiotherapy might increase physical and functional domain of QoL...
  45. ncbi request reprint HIV incidence, retention rate, and baseline predictors of HIV incidence and retention in a prospective cohort study of injection drug users in Xinjiang, China
    Yuanzhi Zhang
    Xinjiang Center for Disease Control and Prevention, Urumqi, China
    Int J Infect Dis 11:318-23. 2007
    ..To determine HIV seroincidence, study participant retention rate, and baseline predictors of HIV incidence and study retention among high-risk injection drug users (IDUs) in Xinjiang, China...
  46. ncbi request reprint Transforming growth factor-beta signaling in breast cancer
    Ching Fang Chang
    Department of Medical Microbiology, Immunology, and Cell Biology, SimmonsCooper Cancer Institute, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
    Front Biosci 12:4393-401. 2007
    ..The TGF-beta signaling pathway is also tissue-context and ligand content-dependent. Therein, therapeutic modulation of TGF-beta signaling may be a multifactorial event...
  47. ncbi request reprint [Effect of inorganic ions on degradation of trace nitrobenzene in aqueous solution by catalytic ozonation]
    Lei Zhao
    School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
    Huan Jing Ke Xue 27:924-9. 2006
    ..The concentration of nitrate and sulfate ion had no remarkable effect on ozonation alone, but the removal rate of other two processes decreased with the increase of the concentration of nitrate and sulfate ion...
  48. ncbi request reprint "Care for Development" intervention in rural China: a prospective follow-up study
    Xingming Jin
    Department of Paediatric Development and Behaviour, Shanghai Children s Medical Centre, Shanghai, China
    J Dev Behav Pediatr 28:213-8. 2007
    ..The CFD materials are based on the Mother's Card, which contained age-specific messages on how caregivers can better play and communicate with a child...
  49. ncbi request reprint Electronic health record use and the quality of ambulatory care in the United States
    Jeffrey A Linder
    Division of General Medicine, Brigham and Women s Hospital, 1620 Tremont St, BC 3 2X, Boston, MA 02120, USA
    Arch Intern Med 167:1400-5. 2007
    ..We assessed the association between EHR use, as implemented, and the quality of ambulatory care in a nationally representative survey...
  50. ncbi request reprint The association between ankle-brachial index and cardiovascular or all-cause mortality in metabolic syndrome of elderly Chinese
    Yuanxi Xu
    Heart, Lung and Blood Vessel Center, Tongji University, Shanghai, PR China
    Hypertens Res 30:613-9. 2007
    ....
  51. ncbi request reprint Aldo-keto reductase family 1 B10 affects fatty acid synthesis by regulating the stability of acetyl-CoA carboxylase-alpha in breast cancer cells
    Jun Ma
    Department of Medical Microbiology, Immunology, and Cell Biology, SimmonsCooper Cancer Institute, Southern Illinois University School of Medicine, Springfield, Illinois 62702, USA
    J Biol Chem 283:3418-23. 2008
    ..These data suggest that AKR1B10 is a novel regulator of the biosynthesis of fatty acid, an essential component of the cell membrane, in breast cancer cells...
  52. ncbi request reprint The importance of decisional balance and self-efficacy in relation to stages of change for fruit and vegetable intakes by young adults
    Jun Ma
    University of Nebraska Lincoln, 202 Ruth Leverton Hall, Lincoln, NE 68583 0806, USA
    Am J Health Promot 16:157-66. 2002
    ..To examine the stages of change, decisional balance, and self-efficacy constructs in relation to fruit and vegetable intakes by young adults 18-24 years old...