1
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Knutson D, Irgens MS, Flynn KC, Norvilitis JM, Bauer LM, Berkessel JB, Cascalheira CJ, Cera JL, Choi NY, Cuccolo K, Danielson DK, Dascano KN, Edlund JE, Fletcher T, Flinn RE, Gosnell CL, Heermans G, Horne M, Howell JL, Hua J, Ijebor EE, Jia F, McGillivray S, Ogba KTU, Shane-Simpson C, Staples A, Ugwu CF, Wang SC, Yockey A, Zheng Z, Zlokovich MS. Associations Between Primary Residence and Mental Health in Global Marginalized Populations. Community Ment Health J 2023; 59:1083-1096. [PMID: 36695952 PMCID: PMC9874180 DOI: 10.1007/s10597-023-01088-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 01/05/2023] [Indexed: 01/26/2023]
Abstract
Scholars suggest that marginalized people in non-urban areas experience higher distress levels and fewer psychosocial resources than in urban areas. Researchers have yet to test whether precise proximity to urban centers is associated with mental health for marginalized populations. We recruited 1733 people who reported living in 45 different countries. Participants entered their home locations and completed measures of anxiety, depression, social support, and resilience. Regression and thematic analyses were used to determine what role distance from legislative and urban centers may play in mental health when marginalized people were disaggregated. Greater distance from legislative center predicted higher anxiety and resilience. Greater distance from urban center also predicted more resilience. Thematic analyses yielded five categories (e.g., safety, connection) that further illustrated the impact of geographic location on health. Implications for community mental health are discussed including the need to better understand and further expand resilience in rural areas.
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Affiliation(s)
- D Knutson
- Oklahoma State University, 445 Willard Hall, Stillwater, OK, 74078, USA.
| | | | - K C Flynn
- United States Department of Agriculture - Agricultural Research Service, Washington, DC, USA
| | | | - L M Bauer
- University of Missouri, Columbia, MO, USA
| | | | | | - J L Cera
- New Mexico State University, Las Cruces, NM, USA
| | - N-Y Choi
- Dankook University, Yongin-Si, South Korea
| | | | - D K Danielson
- University of Toronto, Scarborough, Toronto, ON, USA
| | | | - J E Edlund
- Rochester Institute of Technology, Rochester, NY, USA
| | - T Fletcher
- West Liberty University, West Liberty, WV, USA
| | - R E Flinn
- Medical College of Georgia, Augusta University, Augusta, GA, USA
| | | | | | - M Horne
- Richmond, American International University, London, UK
| | - J L Howell
- University of California, Merced, CA, USA
| | - J Hua
- University of California, Merced, CA, USA
| | - E E Ijebor
- New Mexico State University, Las Cruces, NM, USA
| | - F Jia
- Seton Hall University, South Orange, NJ, USA
| | | | - K T U Ogba
- University of Nigeria Nsukka, Nsukka, Nigeria
| | | | - A Staples
- Weatherford College, Weatherford, TX, USA
| | - C F Ugwu
- University of Nigeria Nsukka, Nsukka, Nigeria
| | - S C Wang
- New Mexico State University, Las Cruces, NM, USA
| | - A Yockey
- University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Z Zheng
- Lasell College, Auburndale, MA, USA
| | - M S Zlokovich
- Psi Chi International Honor Society in Psychology, Chattanooga, TN, USA
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2
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Alexander NB, Knutson D, Morrow LK, Klimasmith I, Smith EM, Spellman M, Rivera M, Scherz M, Fountain K, Allen-Custodio LT, Lynch L, Clarkberg TE, Coon JJ. Disparities, Concerns, and Recommendations for LGBTQ+ Data Collection within the Biological Sciences. Bioscience 2023. [DOI: 10.1093/biosci/biad011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Affiliation(s)
- Nathan B Alexander
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana–Champaign , Urbana, Illinois , United States
| | - Douglas Knutson
- School of Community Health Sciences, Counseling, and Counseling Psychology, Oklahoma State University , Stillwater, Oklahoma , United States
| | - Leslie K Morrow
- Department of Education Policy, Organization, and Leadership, University of Illinois Urbana–Champaign , Urbana, Illinois , United States
| | - Isaac Klimasmith
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana–Champaign , Urbana, Illinois , United States
| | - Emmett M Smith
- Department of Biology, Earlham College, Richmond , Indiana , United States
| | - Madeleine Spellman
- Department of Biology, Earlham College, Richmond , Indiana , United States
| | - Michael Rivera
- Program in Ecology, Evolution, and Conservation Biology, University of Illinois, Urbana–Champaign , Urbana, Illinois , United States
| | - Maxine Scherz
- Department of Environmental Sustainability, Earlham College , Richmond, Indiana , United States
| | - Kae Fountain
- Humboldt State University , Arcata, California , United States
| | | | - Loren Lynch
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana–Champaign , Urbana, Illinois , United States
| | - Thea E Clarkberg
- Department of Biology, Earlham College, Richmond , Indiana , United States
| | - Jaime J Coon
- Department of Environmental Sustainability, Earlham College , Richmond, Indiana , United States
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3
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Chambers-Baltz S, Knutson D, Chwalisz K, Canby A, Kane T. The experiences of support staff in a traumatic brain injury rehabilitation center. Rehabil Psychol 2023; 68:53-64. [PMID: 36442015 DOI: 10.1037/rep0000475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE Employee turnover is a major issue for health care organizations. Burnout is a leading contributor to such turnover. Extensive research on burnout has been conducted in health care settings; however, it has primarily been focused on health care professionals ignoring other critical staff. In particular, traumatic brain injury rehabilitation is an area of health care that includes unique challenges and stressors that may contribute to burnout. Brain injury professionals report experiencing high levels of burnout that further increase as they spend more time with patients; however, little is known about the experiences of brain injury paraprofessionals. This study explores the unique experiences of support staff in traumatic brain injury rehabilitation centers. METHOD The present study used a grounded theory method to explore the phenomena of burnout, turnover, and job satisfaction from the perspective of paraprofessional support staff in 1 posthospital brain injury rehabilitation center. Support staff participated in the research via small group interviews (N = 4) and survey (N = 11). RESULTS The analysis resulted in a grounded theory model, entitled "The Balance model of Rehabilitation Support Work." This model is a framework of risk and protective factors that appeared to influence whether these frontline rehabilitation staff experienced negative outcomes from this often challenging/stressful work environment. The model includes 4 axial-level themes: doing the work, protective factors, risk factors, and imbalance of factors. Within the 4 axial categories are twenty open-coding level categories. IMPLICATIONS Implications for traumatic brain injury rehabilitation organizations and areas for future research are discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | - Douglas Knutson
- School of Community Health Sciences, Counseling and Counseling Psychology
| | | | - Amber Canby
- School of Psychological and Behavioral Sciences
| | - Tyler Kane
- School of Community Health Sciences, Counseling and Counseling Psychology
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4
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Coon JJ, Alexander NB, Smith EM, Spellman M, Klimasmith IM, Allen‐Custodio LT, Clarkberg TE, Lynch L, Knutson D, Fountain K, Rivera M, Scherz M, Morrow LK. Best practices for
LGBTQ
+ inclusion during ecological fieldwork: Considering safety, cis/heteronormativity and structural barriers. J Appl Ecol 2023. [DOI: 10.1111/1365-2664.14339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Jaime J. Coon
- Department of Biology Earlham College Richmond Indiana USA
- Department of Environmental Sustainability Earlham College Richmond Indiana USA
| | - Nathan B. Alexander
- Department of Natural Resources and Environmental Sciences University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | | | - Madeleine Spellman
- Department of Biology Earlham College Richmond Indiana USA
- Department of Environmental Sustainability Earlham College Richmond Indiana USA
| | - Isaac M. Klimasmith
- Department of Natural Resources and Environmental Sciences University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | | | | | - Loren Lynch
- Department of Natural Resources and Environmental Sciences University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | - Douglas Knutson
- School of Community Health Sciences, Counseling and Counseling Psychology Oklahoma State University Stillwater Oklahoma USA
| | | | - Michael Rivera
- Program in Ecology, Evolution, and Conservation Biology University of Illinois at Urbana‐Champaign Urbana Illinois USA
| | - Maxine Scherz
- Department of Biology Earlham College Richmond Indiana USA
- Department of Environmental Sustainability Earlham College Richmond Indiana USA
| | - Leslie K. Morrow
- Lesbian, Gay, Bisexual, and Transgender Resource Center University of Illinois at Urbana‐Champaign Urbana Illinois USA
- Department of Education Policy, Organization and Leadership University of Illinois Urbana‐Champaign Urbana Illinois USA
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Matsuno E, Hashtpari H, Domínguez S, Maroney MR, Gonzalez KA, Knutson D. "There's no real roadmap that I know of": Experiences of transgender and nonbinary graduate students in counseling psychology programs. J Couns Psychol 2023; 70:16-29. [PMID: 36395012 DOI: 10.1037/cou0000647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Minimal research has examined the experiences of transgender and nonbinary (TNB) people in graduate school with no studies to date examining the experiences of TNB students in psychology graduate programs. The purpose of this study was to utilize a critical-ideological paradigm to identify recruitment, retention, and attrition factors for TNB people in counseling psychology (CP) programs with the aim of providing specific recommendations to CP programs. Individual interviews (between 35 and 70 min) were conducted with a sample of 16 TNB graduate students, aged 23-37-years old (M = 26.9, SD = 3.84), in masters (n = 6) and doctoral (n = 10) CP programs. Participants were nonbinary (n = 13) and trans men (n = 3), the majority were White (n = 10), and all were sexual minorities. Participants were recruited online through email listservs and on social media posts on Facebook and Twitter. Reflexive thematic analysis revealed themes related to challenges experienced in CP programs (systemic/structural challenges, interpersonal challenges, individual/internal challenges) and strengths of or recommendations for CP programs (transaffirming resources/policies, supporting TNB competence and expertise, being a TNB accomplice). Several unique subthemes emerged across the seven themes. Findings may be applied by CP programs to more effectively recruit and retain TNB people, and collectively contribute to an increasing number of TNB people within this field. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | | | | | | | | | - Douglas Knutson
- School of Community Health Sciences, Counseling and Counseling Psychology
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6
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Urban B, Knutson D, Klooster D, Soper J. Social and contextual influences on eating pathology in transgender and nonbinary adults. Eat Disord 2022; 31:301-319. [PMID: 36325725 DOI: 10.1080/10640266.2022.2135715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Eating pathology (EP) is reported at alarmingly high rates among transgender and nonbinary (TNB) people. The present study investigates key associations between experiences that are common in TNB populations and EP. TNB individuals located within the United States (N = 212) who self-identified as currently experiencing disordered eating or an eating disorder were recruited from social media outlets and completed an online survey that included measures of EP, discrimination-based trauma symptoms, internalized transphobia, and gender dysphoria. The average age of participants was just over 27 years old (SD = 6.22) and the majority of participants (68.9%) were nonbinary. Data were analyzed using IBM SPSS version 28 and PROCESS 4.0. Discrimination trauma [β = .27, t(211) = 3.90, p < .001] and internalized transphobia [β = .21, t(211) = 3.03, p = .003] were significant predictors of EP in a multiple regression model. Additionally, internalized transphobia partially mediated the association between discrimination trauma and EP. Findings reinforce the need for trauma-informed and multiculturally competent provision of services for TNB populations presenting with eating concerns. Results also highlight the complex role that previously unexplored variables play in the etiology of EP for TNB populations. Implications and clinical recommendations are discussed.
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Affiliation(s)
- Bek Urban
- School of Community Health Sciences, Counseling & Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Douglas Knutson
- School of Community Health Sciences, Counseling & Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Dannie Klooster
- School of Community Health Sciences, Counseling & Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Jules Soper
- School of Community Health Sciences, Counseling & Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma, USA
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7
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Lee HS, Knutson D, Koch JM, Brown C, Keyes C. The Cross-Cultural Practicum Training Experiences of Asian International Counseling Students. The Counseling Psychologist 2022. [DOI: 10.1177/00110000221100825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Despite the call to internationalize counseling psychology and calls for improved mentoring to Asian international students enrolled in counseling psychology training programs, there is a dearth of literature to help trainers understand this population’s clinical training experiences. The present study explored the practicum experiences of Asian international students ( N = 10) in counseling psychology programs using the consensual qualitative research method. Data analysis yielded five domains: Learning Outcomes, Challenges, Resources, Behavioral Strategies, and Suggestions. Participants described how they navigated their cross-cultural practicum training in the face of unique challenges and how they adapted, as well as relied on support systems. As our participants reflected on their cross-cultural clinical training experiences, they shared the lessons they learned and provided suggestions for current and future international students, supervisors, and programs. Scholarly and practical implications for this population are discussed.
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Affiliation(s)
- Hang-Shim Lee
- Counseling Psychology Konkuk University, Seoul, Republic of Korea
| | | | | | - Colton Brown
- Thriveworks Counseling and Coaching, Charlotte, NC, USA
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8
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Koch JM, Knutson D, Loche L, Loche III RW, Lee HS, Federici DJ. A qualitative inquiry of microaffirmation experiences among culturally diverse graduate students. Curr Psychol 2022. [DOI: 10.1007/s12144-020-00811-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Chambers-Baltz S, Knutson D, Becerra M, Hughes A, Cantu Cantu L, Cadaret M. Determined to improve: An exploration of therapist perspectives about their development. Psychotherapy (Chic) 2021; 58:437-448. [PMID: 34881921 DOI: 10.1037/pst0000399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Scholars note that therapist performance is one of many factors that contribute to client treatment outcomes. Given that the performance of therapists matters, researchers have identified several methods and models for improving therapist effectiveness. However, scholars have yet to explore highly effective therapists' perspectives on their motivation to develop, the methods they use, and the impact of their efforts to develop. The present study used a consensual qualitative research (Hill & Knox, 2021) approach to explore dynamics underlying therapist development of expertise. Semistructured interviews were conducted with 12 therapists whose outcome data placed them in the top 25% of clinicians of their respective clinics, according to their supervisors. The researchers reached consensus at each stage of analysis as they organized data into domains, core ideas, and cross-analysis. Domains and corresponding subdomains were: (a) struggle with personal, external, and response to barriers subdomains, (b) therapist characteristics with striving, presence, skills, and values subdomains, and (c) development with early career, formal, feedback, relational, personal/identity subdomains. Implications for practice and areas for future research are discussed. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Affiliation(s)
| | - Douglas Knutson
- School of Community Health Sciences, Counseling and Counseling Psychology, Oklahoma State University
| | - Monica Becerra
- School of Psychological and Behavioral Sciences, Southern Illinois University Carbondale
| | - Anna Hughes
- School of Psychological and Behavioral Sciences, Southern Illinois University Carbondale
| | - Lizbeth Cantu Cantu
- School of Psychological and Behavioral Sciences, Southern Illinois University Carbondale
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10
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Knutson D, Kertz S, Chambers-Baltz S, Christie MB, Harris E, Perinchery R. A pilot test of a text message-based transgender and nonbinary affirmative cognitive-behavioral intervention for anxiety and depression. Psychology of Sexual Orientation and Gender Diversity 2021. [DOI: 10.1037/sgd0000438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Goldbach C, Knutson D. Gender-related minority stress and gender dysphoria: Development and initial validation of the Gender Dysphoria Triggers Scale (GDTS). Psychology of Sexual Orientation and Gender Diversity 2021. [DOI: 10.1037/sgd0000548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Knutson D, Ramakrishnan N, McDurmon G, Federici DJ, Koch JM. Drag performance and health: Predicting depression and resilience. Psychology of Sexual Orientation and Gender Diversity 2021. [DOI: 10.1037/sgd0000542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Milton DC, Knutson D. Family of origin, not chosen family, predicts psychological health in a LGBTQ+ sample. Psychology of Sexual Orientation and Gender Diversity 2021. [DOI: 10.1037/sgd0000531] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Knutson D, Flynn KC, Koch JM, Paralkar U. Geographic Distributions of Drag Performers Relative to Urban Centers: Implications for Health. J Homosex 2021; 68:1685-1698. [PMID: 31860379 DOI: 10.1080/00918369.2019.1705669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
LGB people may become less accessible to health professionals as technology reshapes LGB social connections. Though electronic forms of health promotion are effective, some interventions must be delivered in person. We use GIS to analyze characteristics (e.g., gender identity, depression, and performance involvement) shared by 114 gay, cisgender male drag performers. We used geographic ordinary least squares (OLS) regression to identify spatial relationships based on participant distance from urban centers. Participants lived between 1.73 km (1.07 mi) and 762.77 km (101.14 mi) from the nearest urban center (Mdn = 16.60 km; 10.31 mi). We found a positive correlation between distance from the nearest urban center and performance involvement (R = 0.19, p ≤ 0.05). Results indicate that drag performers are widely disbursed relative to urban centers and that drag involvement provides motivation to travel to gay bars. Health professionals with in person services may use drag shows and related performances to access LGB populations.
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Affiliation(s)
- Douglas Knutson
- Department of Psychology, Southern Illinois University at Carbondale, Carbondale, Illinois, USA
| | - K Colton Flynn
- Department of Geography, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Julie M Koch
- School of Community Health Sciences, Counseling and Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Urvi Paralkar
- Department of Psychology, Southern Illinois University at Carbondale, Carbondale, Illinois, USA
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15
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Goldbach C, Knutson D, Milton DC. LGBTQ+ people and COVID-19: The importance of resilience during a pandemic. Psychology of Sexual Orientation and Gender Diversity 2021. [DOI: 10.1037/sgd0000463] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Knutson D, Koch JM. A Cotherapy Supervision Approach using Person-Centered Theory with a Gender Fluid Client. Clin Case Stud 2021. [DOI: 10.1177/15346501211003157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The authors discuss their work with a young adult client who identified as gender fluid. The client was a college student in a rural, mid-south town. The authors are two faculty members who worked with the client for a period of 2 years using a cotherapy supervision approach. The counseling approach was affirmative and person-centered. By keeping a focus on the exploration of gender foremost, the clinicians saw an abatement of other symptoms (depression, suicidality, self-harm, disordered eating, low self-confidence, emotion dysregulation, dissociation, and so on) and an improvement in wellness (relationships, emotion regulation, self-concept, assertiveness, appropriate boundary-setting, and so on) over time. The authors offer specific interventions such as collaborative letter writing and the creation of a transition roadmap. They also highlight the advantages and utility of a collaborative, person-centered, consent-based, affirmative approach to therapy with rural transgender and nonbinary clients with complex presenting concerns.
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17
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Knutson D, Chwalisz K, Becerra M, Christie MB, Coleman ME, Couch C, Perinchery R. Student development in the context of a beginning-level social justice practicum. Training and Education in Professional Psychology 2020. [DOI: 10.1037/tep0000288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Knutson D, Koch JM. Performance Involvement, Identity, and Emotion Among Cisgender Male Drag Queens. Journal of Creativity in Mental Health 2019. [DOI: 10.1080/15401383.2018.1549517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Cadaret MC, Dykema SA, Ahmed S, Jwayyed JS, Youker AC, Knutson D. A Qualitative Investigation of the Experiences of People Who Panhandle. The Counseling Psychologist 2018. [DOI: 10.1177/0011000018810774] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
U.S. Census data from 2016 indicate that 12.7% of the population may be living in poverty, a total of 40.6 million people. The most visible among this group facing unemployment or underemployment are people who panhandle, characterized by soliciting requests for assistance on street corners or highway exits. If issues of poverty are to be addressed adequately, the characteristics of these populations need to be better understood. In this qualitative study, we sought to understand the experiences of people who panhandle through in-person interviews. Participants included 9 individuals (6 men and 3 women). A consensual qualitative research approach was used to analyze the transcribed interviews resulting in 7 domains. We discuss results in the context of the psychology of working theory. Implications include the integration of social justice and vocational psychology among counseling psychologists working with clients who panhandle.
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Affiliation(s)
| | | | | | | | | | - Douglas Knutson
- Southern Illinois University at Carbondale, Carbondale, IL, USA
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20
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Abstract
Scholars continue to call for research-informed treatment approaches for transgender clients. The existing literature directs therapists to learn about unique issues facing transgender individuals and to provide affirming therapy for transgender clients. We offer a person-centered approach to treatment for transgender individuals that integrates current scholarship with person-centered theory and offers specific interventions for use with transgender clients. These theoretical applications and interventions are offered for both interpersonal and intrapersonal work with clients. Following our analysis, we offer future areas of emphasis for treatment and research.
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Affiliation(s)
- Douglas Knutson
- Southern Illinois University at Carbondale, Carbondale, IL, USA
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21
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Abstract
Purpose: Scholars indicate that rates of mental and physical health issues (e.g., substance use, anxiety, depression) may be much higher among transgender individuals relative to the general population. This disparity may be even greater for transgender individuals in rural areas. Clinical researchers suggest using affirmative therapeutic approaches and interventions to address the health concerns of transgender individuals, specifically to connect individuals with the transgender community. However, little is known about the content of information that is shared in transgender communities in rural areas. Method: For this qualitative study, researchers asked transgender individuals in rural areas (n=10) what recommendations they would offer to other transgender individuals in rural areas regarding healthcare access. Results: Results were organized into four domains: Access care, Quality control, Difficulties, and Mentorship. Within these domains, we identified 11 sub-domains: Get physical healthcare, Get mental healthcare, Provider search, Provider vetting, Treatment verification, It will be difficult, Know who you are, Believe in yourself, Move, Connect to community, and Other. Conclusions: We discuss implications of our findings for healthcare provision in rural areas, and we provide recommendations for future research.
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Affiliation(s)
- Douglas Knutson
- Department of Psychology, Southern Illinois University at Carbondale, Carbondale, Illinois
| | - Meredith A Martyr
- Department of Educational Psychology, University of Minnesota, Twin Cities, Minneapolis, Minnesota
| | - Travis A Mitchell
- School of Community Health Sciences, Counseling and Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma
| | - Tori Arthur
- School of Community Health Sciences, Counseling and Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma
| | - Julie M Koch
- School of Community Health Sciences, Counseling and Counseling Psychology, Oklahoma State University, Stillwater, Oklahoma
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22
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Knutson D, Koch JM, Sneed J, Lee A. The Emotional and Psychological Experiences of Drag Performers: A Qualitative Study. Journal of LGBT Issues in Counseling 2018. [DOI: 10.1080/15538605.2018.1421114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Douglas Knutson
- Department of Psychology, Southern Illinois University at Carbondale, Carbondale, Illinois USA
| | - Julie M. Koch
- Counseling and Counseling Psychology, School of Community Health Sciences, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Jenilee Sneed
- Counseling and Counseling Psychology, School of Community Health Sciences, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Anthony Lee
- Counseling and Counseling Psychology, School of Community Health Sciences, Oklahoma State University, Stillwater, Oklahoma, USA
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Story CR, Knutson D, Brown JB, Spears-Laniox E, Harvey IS, Gizlice Z, Whitt-Glover MC. Changes in social support over time in a faith-based physical activity intervention. Health Educ Res 2017; 32:513-523. [PMID: 29126170 PMCID: PMC5914453 DOI: 10.1093/her/cyx062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 08/17/2017] [Indexed: 06/07/2023]
Abstract
African-American women report higher levels of chronic conditions and church attendance relative to the overall US population. Therefore, efforts have increased over the past decade to design church-based health promotion programs. The present study compared changes in religiosity, religious social support and general social support across time within a church-based physical activity study. In a clustered randomized controlled trial, 31 churches and ∼15 African-American women per church were recruited to participate. Churches were randomized to one of three 10-month programs to promote physical activity: faith-integrated (FI), non-faith integrated (NFI) or self-guided control program (C). Comparisons were made between baseline and 10-month time points to assess differences over time. A significant reduction in general social support was observed across all groups. Private religious practices and religious emotional support received increases in C and FI, respectively. Prior research findings and the current study highlight difficulty in demonstrating strong, unilateral changes in religiosity, social support and health. Additional research is needed to identify more accurate measures of these concepts. Findings from the current study have implications for the role of social support in future church-based health promotion studies.
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Affiliation(s)
- Chandra R Story
- Department of Health and Human Performance, Middle Tennessee State University, Murfreesboro, TN, USA
| | - Douglas Knutson
- Department of Psychology, Southern Illinois University at Carbondale, Carbondale, IL, USA
| | - Jameisha B Brown
- Department of Health and Kinesiology, Transdisciplinary Center for Health Equity Research, Texas A & M University, College Station, TX, USA
| | - Erica Spears-Laniox
- Department of Health and Kinesiology, Transdisciplinary Center for Health Equity Research, Texas A & M University, College Station, TX, USA
| | - Idethia Shevon Harvey
- Department of Health and Kinesiology, Transdisciplinary Center for Health Equity Research, Texas A & M University, College Station, TX, USA
| | - Ziya Gizlice
- Center for Health Promotion and Disease Prevention, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Harvey IS, Story CR, Knutson D, Whitt-Glover MC. Exploring the Relationship of Religiosity, Religious Support, and Social Support Among African American Women in a Physical Activity Intervention Program. J Relig Health 2016; 55:495-509. [PMID: 25673181 PMCID: PMC4718887 DOI: 10.1007/s10943-015-0017-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Religious belief has been linked to a variety of positive mental and physical health outcomes. This exploratory study will address the relationship between religious involvement and social connectedness among African American women. Results from a physical activity intervention research project (N = 465) found that total religious support and social support were significantly negatively correlated with total religiosity, while total general social support was significantly positively correlated with total religious support. Overall, the study indicates that more research is needed on ways to encourage interaction between the positive dimensions of both religiosity and social support to bring about healthy behaviors.
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Affiliation(s)
- Idethia Shevon Harvey
- Health and Kinesiology, Texas A & M University, 4243 TAMU, College Station, TX, 77843-4243, USA.
| | - Chandra R Story
- School of Applied Health and Educational Psychology, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Douglas Knutson
- School of Applied Health and Educational Psychology, Oklahoma State University, Stillwater, OK, 74078, USA
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Laursen H, Bellman D, McCrae J, Knutson D, Rogers J, Manion K. Data connection: www.datamanager.blogspot.com. A clinical research professionals and data manager network. Biol Blood Marrow Transplant 2005. [DOI: 10.1016/j.bbmt.2004.12.322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Laursen H, McCrae J, Chilton J, Bellman D, Knutson D. Clinical research professionals and data manager network - newsletter: www.datamanager.blogspot.com. Biol Blood Marrow Transplant 2004. [DOI: 10.1016/j.bbmt.2003.12.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Finnegan RA, Knutson D. Stereochemistry of Photodecarboxylation and Photodecarbonylation Reactions of Aryl Esters. The Photolysis of (S)-(+)-3,5-Di-t-butylphenyl 2-Methylbutanoate. J Am Chem Soc 2002. [DOI: 10.1021/ja00984a049] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Finnegan RA, Knutson D. Photochemical studies. VI. Photochemistry of nitrobenzoate esters and related nitroaromatic compounds. Some novel reduction and esterification reactions. J Am Chem Soc 2002. [DOI: 10.1021/ja01008a061] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Alexander L, Knutson D, Kittilson JD, Sheridan MA. Localization of somatostatin mRNAs in the brain and pancreas of rainbow trout (Oncorhynchus mykiss). Comp Biochem Physiol B Biochem Mol Biol 2001; 129:221-8. [PMID: 11399453 DOI: 10.1016/s1096-4959(01)00313-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rainbow trout possess three distinct mRNAs, each encoding a separate precursor: PPSS I, which contains a 14-amino acid sequence at its C-terminus (somatostatin-14) that is highly conserved among vertebrates, as well as two others, PPSS II' and PPSS II", both containing [Tyr(7), Gly(10)]-somatostatin-14 at their C-terminus. In this study, we used RNA template-specific PCR and in situ hybridization to determine the distribution and cellular localization of PPSS mRNAs in the brain and Brockmann body of rainbow trout. PPSS I, PPSS II' and PPSS II" were expressed in the Brockmann body and pituitary; the expression of PPSS mRNAs in the brain was region specific. PPSS I mRNA was expressed in the Brockmann body predominantly by cells other than those that expressed PPSS IIs; however, there were several instances where PPSS I and PPSS IIs were co-expressed within the same cell. Of the PPSS II-expressing cells, many were observed to express both PPSS II' and PPSS II" mRNA; however, some cells expressed only PPSS II' mRNA, while other cells expressed only PPSS II" mRNA. In the brain, PPSS I mRNA was expressed in the optic tectum (OT) and in many hypothalamic nuclei, including the nucleus rotundus (NR), nucleus anterioris hypothalami (NAH), nucleus anterior tuberis (NAT), nucleus lateral tuberis (NLT), as well as in the pituitary (adenohypophysis). PPSS II" mRNA was present in the same regions as PPSS I mRNA; however, PPSS II' mRNA was present primarily in OT, NAT, NLT and adenohypohysis. These results indicate that PPSS mRNAs are expressed differently by different cells, suggesting that cell-specific mechanisms are involved with the control of PPSS expression and that particular biological responses may be associated with a specific SS isoform.
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Affiliation(s)
- L Alexander
- Department of Zoology and Regulatory Biosciences Center, North Dakota State University, 58105-5517, Fargo, ND, USA
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Knutson D, Anderson L. Regional hospital improves efficiency with co-generation retrofit. Health Estate 1999; 53:12, 14. [PMID: 10747721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Feasibility analysis of the co-generation retrofit of the Red Deer Regional Hospital pointed to a reasonable payback of capital cost and increased efficiency in operation of the facility. Budget restrictions nearly stopped the project from proceeding. Innovative construction procedures proposed by the Facility Management Group, in particular, Mr Keith Metcalfe, Director of Maintenance, allowed a worthwhile project to reach successful completion. We feel that this model can perhaps be used by similar facilities in the future to achieve their energy efficiency goals.
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Abstract
The growth of managed care in general suggests that a substantially larger number of rural primary care physicians will be asked to enter into risk-bearing contracts with Health Maintenance Organizations (HMOs) in the near future. This article describes the different types of payment and risk-sharing arrangements that exist between HMOs and primary care physicians and presents survey data relating to their prevalence in rural areas. Also, it describes in detail the payment arrangements used by four HMOs that contract with rural primary care physicians. The concluding discussion highlights policy issues regarding risk-sharing arrangements that are especially pertinent in rural settings.
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Affiliation(s)
- J B Christianson
- Institute for Health Services Research, School of Public Health, University of Minnesota, Minneapolis 55455, USA
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Knutson D. Case study: the Minneapolis Buyers Health Care Action Group. Inquiry 1998; 35:171-7. [PMID: 9719785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- D Knutson
- Health Research Center, Institute for Research and Education, Health System Minnesota, Minneapolis 55416-2699, USA
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Fowles JB, Weiner JP, Knutson D, Fowler E, Tucker AM, Ireland M. Taking health status into account when setting capitation rates. A comparison of risk-adjustment methods. Am J Ophthalmol 1997. [DOI: 10.1016/s0002-9394(14)71058-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Fowles JB, Weiner JP, Knutson D, Fowler E, Tucker AM, Ireland M. Taking health status into account when setting capitation rates: a comparison of risk-adjustment methods. JAMA 1996; 276:1316-21. [PMID: 8861990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To compare performance of different health status measures for risk-adjusting capitation rates. DESIGN Cross-sectional study. Health status measures derived from 1 year were used to predict resources for that year and the next. SETTING Group-network health maintenance organization in Minnesota. PARTICIPANTS Sample of 18- to 64-year-old (n=3825) and elderly (aged > or = 65 years; n=1955) members enrolled in a network-model health maintenance organization in Minnesota. MAIN OUTCOME MEASURES Total expenditures in the year concurrent with the health status survey (July 1991 through June 1992) and total expenditures in the year following the survey (July 1992 through June 1993). RESULTS Capitation adjustment based on demographic measures performed least well. Both self-reported health status measures and diagnoses predicted future expenditures twice as well as demographics. When predicting costs for groups of patients rather than individuals, the demographic model worked well for average groups but tended to overpredict healthier groups and underpredict sicker groups. Ambulatory Care Groups based on diagnoses performed better than self-reported health status both in the retrospective models and across healthier and sicker groups. CONCLUSIONS Without risk adjustment, capitation rates are likely to overpay or underpay physicians for certain patient groups. It is possible to improve prediction using health status measures for risk adjustment. When selection bias is suspected and administrative data are available, we recommend a risk-adjustment method based on diagnostic information. If diagnostic data are not available, we recommend a system based on simple self-reported measures, such as chronic conditions, rather than complex functional status measures.
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Affiliation(s)
- J B Fowles
- Health Research Center, Institute for Research and Education, HealthSystem Minnesota, Minneapolis 55416, USA
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Abstract
Though the report card style is seen by many as a way to create better-informed consumers, very little is actually known about how consumers will respond to health care report cards. Report cards are only one of many factors that influence health care decision making. Much consumer-oriented effort and fine-tuning will be required to make report cards effective. Using the approach called "social marketing" as a framework, specific examples are used to outline some ideas for more intensive pursuit of consumers' perspectives in the design and distribution of report cards.
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Lickteig S, Knutson D, Yoast R, Remington PL. Wisconsin's experience with the national nicotine patch giveaway. Wis Med J 1993; 92:631-2. [PMID: 8303901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- S Lickteig
- Section of Chronic Disease Prevention and Health Promotion, Bureau of Public Health, Madison, WI 53701-0309
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Schmidt JA, Thomassen KI, Goldston RJ, Neilson GH, Nevins WM, Sinnis JC, Andersen P, Bair W, Barr WL, Batchelor DB, Baxi C, Berg G, Bernabei S, Bialek JM, Bonoli PT, Boozer A, Bowers D, Bronner G, Brooks JN, Brown TG, Bulmer R, Butner D, Campbell R, Casper T, Chaniotakis E, Chaplin M, Chen SJ, Chin E, Chrzanowski J, Citrolo J, Cole MJ, Dahlgren F, Davis FC, Davis J, Davis S, Diatchenko N, Dinkevich S, Feldshteyn Y, Felker B, Feng T, Fenstermacher ME, Fleming R, Fogarty PJ, Fragetta W, Fredd E, Gabler M, Galambos J, Gohar Y, Goranson PL, Greenough N, Grisham LR, Haines J, Haney S, Hassenzahl W, Heim J, Heitzenroeder PJ, Hill DN, Hodapp T, Houlberg WA, Hubbard A, Hyatt A, Jackson M, Jaeger EF, Jardin SC, Johnson J, Jones GH, Juliano DR, Junge R, Kalish M, Kessel CE, Knutson D, LaHaye RJ, Lang DD, Langley RA, Liew SL, Lu E, Mantz H, Manickam J, Mau TK, Medley S, Mikkelsen DR, Miller R, Monticello D, Morgan D, Moroz P, Motloch C, Mueller J, Myatt L, Nelson BE, Neumeyer CL, Nilson D, O'Conner T, Pearlstein LD, Peebles WA, Pelovitz M, Perkins FW, Perkins LJ, Petersen D, Pillsbury R, Politzer PA, Pomphrey N, Porkolab M, Posey A, Radovinsky A, Raftopoulis S, Ramakrishnan S, Ramos J, Rauch W, Ravenscroft D, Redler K, Reiersen WT, Reiman A, Reis E, Rewoldt G, Richards DJ, Rocco R, Rognlien TD, Ruzic D, Sabbagh S, Sapp J, Sayer RO, Scharer JE, Schmitz L, Schnitz J, Sevier L, Shipley SE, Simmons RT, Slack D, Smith GR, Stambaugh R, Steill G, Stevenson T, Stoenescu S, Onge KTS, Stotler DP, Strait T, Strickler DJ, Swain DW, Tang W, Tuszewski M, Ulrickson MA, VonHalle A, Walker MS, Wang C, Wang P, Warren J, Werley KA, West WP, Williams F, Wong R, Wright K, Wurden GA, Yugo JJ, Zakharov L, Zbasnik J. The design of the Tokamak Physics Experiment (TPX). J Fusion Energ 1993. [DOI: 10.1007/bf01079667] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Thomsen RJ, Stranieri A, Knutson D, Strauss JS. Topical clindamycin treatment of acne. Clinical, surface lipid composition, and quantitative surface microbiology response. Arch Dermatol 1980; 116:1031-4. [PMID: 6448025 DOI: 10.1001/archderm.116.9.1031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A double-blind study has been conducted to examine the effect of topical 1% clindamycin hydrochloride hydrate in a hydroalcoholic vehicle as compared to the effect of the vehicle alone. Fourteen patients applied clindamycin or vehicle alone twice daily for eight weeks. Free fatty acid surface lipid percentages, quantitative bacterial counts, and clinical response were assessed every two weeks. A significant reduction (88%) in the percentage of free fatty acids in the surface lipids was seen in the clindamycin-treated group and not in the vehicle-treated group. There was no significant change in the surface microflora. Despite the short duration of treatment, objective clinical improvement was seen in three of nine treated patients, while none was observed in the placebo-treated patients.
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Chia D, Barnett EV, Yamagata J, Knutson D, Restivo C, Furst D. Quantitation and characterization of soluble immune complexes precipitated from sera by polyethylene glycol (PEG). Clin Exp Immunol 1979; 37:399-407. [PMID: 315842 PMCID: PMC1537790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Polyethylene glycol (PEG) was used to isolate immune complexes from sera. Complexes were then quantified and partially characterized by a variety of immunological techniques. Complexes were detected in rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), Felty's syndrome and vasculitis, but not in polymyositis, scleroderma or Behçets syndrome. The level of immune complexes correlated with disease activity in SLE and RA patients. Rheumatoid factors and anti-DNA antibodies were enriched by PEG precipitation of RA and SLE sera, respectively, thus these antibodies appeared to be present in the form of soluble immune complexes. Immune complexes usually contained all three immunoglobulin classes, IgG, IgM and IgA. Complexes from RA patients were generally larger and often contained Clq, while C3 was found almost exclusively in SLE complexes which also tended to be smaller. Such compositional differences may one day explain the differences in clinical manifestations of various immune complex-mediated diseases.
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Maddox DA, Bennett CM, Deen WM, Glassock RJ, Knutson D, Brenner BM. Control of proximal tubule fluid reabsorption in experimental glomerulonephritis. J Clin Invest 1975; 55:1315-25. [PMID: 1133177 PMCID: PMC301887 DOI: 10.1172/jci108051] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We have recently shown that in the early autologous phase of nephrotoxic serum nephritis (NSN) single nephron glomerular filtration rate is unchanged from values in normal hydropenic control rats, but that single nephron filtration fraction and efferent arteriolar oncotic pressure (piE) are reduced because of a marked reduction in the glomerular capillary ultrafiltration coefficient. The present study was undertaken to examine the influence of this decline in piE as well as the other known determinants of peritubular capillary fluid exchange on absolute proximal fluid reabsorption (APR) in NSN. The findings indicate that APR and proximal fractional reabsorption are reduced significantly in NSN, relative to values in a separate group of age and weight-matched normal hydropenic control rats studied concurrently. In addition to the measured decline in piE, efferent arteriolar plasma flow (Qe) and peritubular capillary hydraulic pressure (Pc) were found to increase significantly, while interstitial oncotic pressure, estimated from hilar lymph, was not significantly different from values in control rats. Using a mathematical model of peritubular capillary fluid uptake we found that, assuming that the capillary permeability-surface area product and interstitial hydraulic pressure are unchanged in NSN, the observed changes in piE and Pc are sufficient to offset the effect of the increase in QE, yielding a calculated reduction in APR of approximately 4 nl/min, in excellent agreement with the observed mean decline of 4.1 nl/min. These findings suggest that control of APR in NSN is mediated by the same factors that regulate APR under normal physiological conditions, namely, the imbalance of forces governing peritubular capillary uptake of isotonic reabsorbate.
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Maddox DA, Bennett CM, Deen WM, Glassock RJ, Knutson D, Daugharty TM, Brenner BM. Determinants of glomerular filtration in experimental glomerulonephritis in the rat. J Clin Invest 1975; 55:305-18. [PMID: 1127101 PMCID: PMC301749 DOI: 10.1172/jci107934] [Citation(s) in RCA: 100] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Pressures and flows were measured in surface glomerular capillaries, efferent arterioles, and proximal tubules of 22 Wistar rats in the early autologous phase of nephrotoxic serum nephritis (NSN). Linear deposits of rabbit and rat IgG and C3 component of complement were demonstrated in glomerular capillary walls by immunofluorescence microscopy. Light microscopy revealed diffuse proliferative glomerulonephritis, and proteinuria was present. Although whole kidney and single nephron glomerular filtration rate (GFR) in NSN (0.8 plus or minus 0.04 SE2 ml/min and 2 plus or minus 2 nl/min, respectively) remained unchanged from values in 16 weight-matched NORMAL HYDROPENIC control rats (0.8 plus or minus 0.08 and 28 plus or minus 2), important alterations in glomerular dynamics were noted. Mean transcapillary hydraulic pressure difference (deltaP) averaged 41 plus or minus 1 mm Hg in NSN versus 32 plus or minus 1 in controls (P LESS THAN 0.005). Oncotic pressures at the afferent (piA) end of the glomerular capillary were similar in both groups ( 16 mm /g) but increased much less by the efferent end (piE) in NSN (to 29 plus or minus 1 mm Hg) than in controls (33 plus or minus 1, P less than 0.025). Hence, equality between deltaP and piE, denoting filtration pressure equilibrium, obtained in control but not in NSN rats. While glomerular plasma flow rate was slightly higher in NSN (88 plus or minus 8 nl/min) than in controls (76 plus or minus 6, P greater than 0.2), the failure to achieve filtration equilibrium in NSN rats was primarily the consequence of a marked fall in the glomerular capillary ultrafiltration coefficient, Kf, to a mean value of 0.03 nl/(s times mm Hg), considerably lower than that found recently for the normal rat, 0.08 nl/(s times mm Hg). Thus, despite extensive glomerular injury, evidenced morphologically and by the low Kf, GFR remained normal. This maintenance of GFR resulted primarily from increases in deltaP, which tended to increase the net driving force for filtration, and thereby compensate for the reduction in Kf.
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Finnegan R, Knutson D. Photochemical studies, VII. Solvent effects on the photolysis of aryl esters: fries rearrangement decarboxylation. Tetrahedron Lett 1968. [DOI: 10.1016/s0040-4039(00)89510-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Finnegan RA, Knutson D. Additional examples of a novel photo-decarboxylation process; the preparation of some hindered aryl ketones. Chem Ind 1965; 44:1837-8. [PMID: 5842035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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