Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Susan Holtzman is active.

Publication


Featured researches published by Susan Holtzman.


Journal of Health Psychology | 2004

The Role of Social Support in Coping with Daily Pain among Patients with Rheumatoid Arthritis

Susan Holtzman; Sarah Newth; Anita DeLongis

Using a daily process methodology, the current study examined the role of social support in coping and pain severity among patients with rheumatoid arthritis (RA). Seventy-three adults with RA completed a structured record twice daily for one week on pain severity, pain coping, satisfaction with support and disappointment in support. Findings suggested that support influenced pain indirectly, by encouraging the use of specific coping strategies, as well as impacting coping effectiveness. Satisfaction with support was associated with adaptive and maladaptive coping, while disappointment was associated with maladaptive coping. Findings highlight the importance of close others in promoting adaptive coping strategies.


Journal of Family Psychology | 2004

Social support and social strain among husbands and wives: a multilevel analysis.

Anita DeLongis; Martha J. Capreol; Susan Holtzman; Tess O'brien; Jennifer D. Campbell

In response to recent calls in the literature for within-person examinations of social support processes over time, this study explores the relationships of spousal support, spousal strain, and well-being among husbands and wives, both within the same day and across days. Eighty-three couples were interviewed and completed a structured diary twice daily for 1 week. The results of multilevel hierarchical modeling suggest that both spousal support and spousal strain made significant, independent contributions to concurrent negative affect, although only spousal support was a significant predictor of next-day negative affect. Spousal strain interacted with spousal support to predict next-day negative affect. Direct and moderating effects of perceived marital adjustment on negative affect were discussed.


International Journal of Drug Policy | 2013

Cannabis for therapeutic purposes: Patient characteristics, access, and reasons for use

Zach Walsh; Robert Callaway; Lynne Belle-Isle; Rielle Capler; Robert Kay; Philippe Lucas; Susan Holtzman

BACKGROUND The authorized and unauthorized use of cannabis for therapeutic purposes (CTP) has increased dramatically in recent years, and physicians have called for further research to better clarify the parameters of effective and appropriate use. We report findings from a large cross-sectional study of the use of CTP in Canada and compare use across medical conditions and across authorized and unauthorized users. METHODS We examined cannabis use history, medical conditions and symptoms, patterns of current use of CTP, modes of access and perceived effectiveness among 628 self-selected Canadians consumers of CTP. Participants were recruited from medical cannabis dispensaries and from organizations that assist users of CTP. RESULTS Patients reported using cannabis to treat multiple symptoms, with sleep, pain, and anxiety being the most common. Cannabis was perceived to provide effective symptoms relief across medical conditions. Patterns of use were also consistent across medical conditions. Notable differences were observed with regard to modes of access. CONCLUSION Across medical conditions respondents reported using cannabis to effectively address diverse symptoms. Results indicate a substantial disconnect between the therapeutic use of cannabis and research on the risks and benefits of such use; particularly with regard to the anxiolytic and sedative use of cannabis. Authorized and unauthorized users exhibited few meaningful differences with regard to medical conditions and patterns of use, but faced substantial differences regarding access.


Pain | 2007

One day at a time: The impact of daily satisfaction with spouse responses on pain, negative affect and catastrophizing among individuals with rheumatoid arthritis

Susan Holtzman; Anita DeLongis

Abstract The majority of research on pain catastrophizing has focused on its negative consequences for adjustment to chronic pain, with few investigations of factors that influence catastrophizing or its detrimental effects. Using a daily process methodology, the current study examined, first, the extent to which a supportive social environment plays a role in reduced catastrophizing, and second, the extent to which support might protect against the detrimental effects of catastrophizing on well‐being. Sixty‐nine married individuals with rheumatoid arthritis took part in an initial background interview, followed by twice daily telephone interviews (regarding pain intensity, negative affect, catastrophizing and satisfaction with spouse responses) for 1 week. Multi‐level modeling indicated several pathways through which satisfaction with spouse responses disrupts the vicious cycle of pain, negative affect and catastrophizing. Consistent with past research, catastrophizing was associated with increases in pain and negative affect. However, when individuals reported increases in satisfaction with spouse responses they were less likely to experience increases in negative affect due to catastrophizing. Satisfaction with spouse responses also reduced the likelihood of feeling overwhelmed and helpless in dealing with daily pain. The relationship between pain and catastrophizing was attenuated in the context of increases in satisfaction with spouse responses. Negative affect was associated with increases in catastrophizing, but only when individuals reported decreases in satisfaction with spouse responses. Overall, findings were consistent with a model in which satisfaction with spouse responses serves as a coping resource, and suggests the importance of involving close others in treatments to reduce pain and catastrophizing.


Pain Research & Management | 2013

Yoga for Chronic Low Back Pain: A Meta-Analysis of Randomized Controlled Trials

Susan Holtzman; R. Thomas Beggs

OBJECTIVES To evaluate the efficacy of yoga as an intervention for chronic low back pain (CLBP) using a meta-analytical approach. Randomized controlled trials (RCTs) that examined pain and⁄or functional disability as treatment outcomes were included. Post-treatment and follow-up outcomes were assessed. METHODS A comprehensive search of relevant electronic databases, from the time of their inception until November 2011, was conducted. Cohens d effect sizes were calculated and entered in a random-effects model. RESULTS Eight RCTs met the criteria for inclusion (eight assessing functional disability and five assessing pain) and involved a total of 743 patients. At post-treatment, yoga had a medium to large effect on functional disability (d=0.645) and pain (d=0.623). Despite a wide range of yoga styles and treatment durations, heterogeneity in post-treatment effect sizes was low. Follow-up effect sizes for functional disability and pain were smaller, but remained significant (d=0.397 and d=0.486, respectively); however, there was a moderate to high level of variability in these effect sizes. DISCUSSION The results of the present study indicate that yoga may be an efficacious adjunctive treatment for CLBP. The strongest and most consistent evidence emerged for the short-term benefits of yoga on functional disability. However, before any definitive conclusions can be drawn, there are a number of methodological concerns that need to be addressed. In particular, it is recommended that future RCTs include an active control group to determine whether yoga has specific treatment effects and whether yoga offers any advantages over traditional exercise programs and other alternative therapies for CLBP.


Drug and Alcohol Review | 2016

Substituting cannabis for prescription drugs, alcohol and other substances among medical cannabis patients: The impact of contextual factors.

Philippe Lucas; Zach Walsh; Kim Crosby; Robert Callaway; Lynne Belle-Isle; Robert Kay; Rielle Capler; Susan Holtzman

INTRODUCTION AND AIMS Recent years have witnessed increased attention to how cannabis use impacts the use of other psychoactive substances. The present study examines the use of cannabis as a substitute for alcohol, illicit substances and prescription drugs among 473 adults who use cannabis for therapeutic purposes. DESIGN AND METHODS The Cannabis Access for Medical Purposes Survey is a 414-question cross-sectional survey that was available to Canadian medical cannabis patients online and by hard copy in 2011 and 2012 to gather information on patient demographics, medical conditions and symptoms, patterns of medical cannabis use, cannabis substitution and barriers to access to medical cannabis. RESULTS Substituting cannabis for one or more of alcohol, illicit drugs or prescription drugs was reported by 87% (n = 410) of respondents, with 80.3% reporting substitution for prescription drugs, 51.7% for alcohol, and 32.6% for illicit substances. Respondents who reported substituting cannabis for prescription drugs were more likely to report difficulty affording sufficient quantities of cannabis, and patients under 40 years of age were more likely to substitute cannabis for all three classes of substance than older patients. DISCUSSION AND CONCLUSIONS The finding that cannabis was substituted for all three classes of substances suggests that the medical use of cannabis may play a harm reduction role in the context of use of these substances, and may have implications for abstinence-based substance use treatment approaches. Further research should seek to differentiate between biomedical substitution for prescription pharmaceuticals and psychoactive drug substitution, and to elucidate the mechanisms behind both. [Lucas P, Walsh Z, Crosby K, Callaway R, Belle-Isle L, Kay B, Capler R, Holtzman S. Substituting cannabis for prescription drugs, alcohol, and other substances among medical cannabis patients: The impact of contextual factors. Drug Alcohol Rev 2016;35:326-333].


International Journal of Drug Policy | 2014

Barriers to access for Canadians who use cannabis for therapeutic purposes

Lynne Belle-Isle; Zach Walsh; Robert Callaway; Philippe Lucas; Rielle Capler; Robert Kay; Susan Holtzman

BACKGROUND There is increased interest in the therapeutic potential of cannabis in recent decades. Canada, the Netherlands, Israel and some states in the United States have developed programs to allow access to cannabis for therapeutic purposes (CTP). In Canada, enrollment in the federal CTP program represents fewer than 5% of the estimated users of CTP. The discrepancy between the number of Canadians who report using CTP and the rate of utilization of the federal CTP program suggests the existence of barriers to access to this program. METHODS In the present study we employ a health services analytical framework to examine barriers to access to CTP among 628 current CTP users. We define barriers to access as areas of poor fit between clients and services. We use five dimensions of accommodation, accessibility, availability, affordability, and acceptability to examine access to CTP. RESULTS Our findings reveal that it is difficult for Canadians to find a physician to support their application to access CTP. Accessing CTP from unauthorized sources was common; only 7% of respondents accessed CTP exclusively from authorized sources. Access to CTP was positively associated with the presence of medical cannabis dispensaries, which were not included in the regulatory regime. Access to CTP varied by medical condition and general quality of health. Affordability of CTP was a substantial barrier to access. CONCLUSIONS Strategies need to be developed to encourage scientific inquiry into CTP and address the barriers to access to CTP and the stigma and controversy that surround CTP and strain patient-physician relationships.


Liver Transplantation | 2011

Epidural analgesia provides better pain management after live liver donation: A retrospective study

Hance Clarke; Tony Chandy; Coimbatore Srinivas; Salima S. J. Ladak; Nobuhiko Okubo; Nicholas Mitsakakis; Susan Holtzman; David R. Grant; Stuart A. McCluskey; Joel Katz

Despite the increase in surgical volumes of live liver donation, there has been very little documentation of the postoperative pain experience. The primary aim of this study was to examine the difference in acute postoperative pain intensity and adverse effects between patients who received intravenous patient‐controlled analgesia (IV PCA) or patient‐controlled epidural analgesia (PCEA) for pain control after live liver donation surgery. A retrospective chart review was performed of 226 consecutive patients who underwent right living donor hepatic surgery at the Toronto General Hospital, Toronto, Canada. Patients who received as their primary postoperative analgesic modality IV PCA (n = 158) were compared to patients who received PCEA (n = 68). Demographic profiles for the 2 groups were similar with respect to age, sex, and body mass index at the time of surgery. For the first 3 postoperative days, pain intensity was significantly lower in patients who received epidural analgesia (P < 0.01). Clinically significant moderate pain (defined as a Numeric Rating Scale pain score >4) was reported more frequently in the IV PCA group (P < 0.05) along with increased sedation (P < 0.05). Pruritus was reported more frequently in the PCEA group of patients compared to the IV PCA group (P < 0.05). Significant between‐group differences were not found for the incidence of postoperative vomiting, the time at which patients began fluid intake, the time to initial ambulation, or the length of hospital stay. In conclusion, epidural analgesia provides better postoperative pain relief, less sedation, but more pruritus than IV PCA after live liver donation. Liver Transpl, 2011.


Psychosomatics | 2012

A Genetic Predisposition to Produce Low Levels of IL-10 is Related to Depressive Symptoms: A Pilot Study of Patients with End Stage Renal Disease

Susan Holtzman; Susan E. Abbey; Christopher T. Chan; Joanne M. Bargman; Donna E. Stewart

OBJECTIVE Heightened levels of inflammation may be associated with an increased risk of depression, particularly among those with inflammatory medical conditions. Although elevated rates of both systemic inflammation and depression have been documented among patients with end stage renal disease (ESRD), the link between these factors has received little empirical evaluation. The goal of this pilot study was to investigate the association between cytokine gene polymorphisms (that are known to influence pro- and anti-inflammatory cytokine production) and depressive symptoms among patients with ESRD. METHODS Ninety-three patients with ESRD completed the Beck Depression Inventory-II and the disease-related symptom subscale of the Kidney Disease Quality of Life short form. Patients were genotyped for eight single nucleotide polymorphisms in genes coding for pro-inflammatory (TNF-α, IL-6, IFN-γ) and anti-inflammatory (IL-10, TGF-β1) cytokines. RESULTS Regression analyses indicated that patients with the A/A genotype for the IL-10 -1082 polymorphism (lower IL-10 producers) reported significantly greater depressive symptoms than G allele carriers (higher IL-10 producers; b = 0.22, P = 0.011), even after controlling for relevant covariates. CONCLUSION These findings provide some support for cytokine theories of depression in the medically ill, and specifically for the protective role of anti-inflammatory processes. Further research is needed to confirm these preliminary results and to explore the possibility of identifying subtypes of depressed patients based on inflammatory profiles, and those who may benefit from anti-inflammatory therapies.


Liver Transplantation | 2009

Financial, vocational, and interpersonal impact of living liver donation

Susan Holtzman; Lesley Adcock; Derek DuBay; George Therapondos; Arash Kashfi; Sarah Greenwood; Eberhard L. Renner; David R. Grant; Gary A. Levy; Susan E. Abbey

The ability to inform prospective donors of the psychosocial risks of living liver donation is currently limited by the scant empirical literature. The present study was designed to examine donor perceptions of the impact of donation on financial, vocational, and interpersonal life domains and identify demographic and clinical factors related to longer recovery times and greater life interference. A total of 143 donors completed a retrospective questionnaire that included a standardized measure of life interference [Illness Intrusiveness Rating Scale (IIRS)] and additional questions regarding the perceived impact of donation. Donor IIRS scores suggested that donors experience a relatively low level of life interference due to donation [1.60 ± 0.72, with a possible range of 1 (“not very much” interference) to 7 (“very much” interference)]. However, approximately 1 in 5 donors reported that donating was a significant financial burden. Logistic regression analysis revealed that donors with a psychiatric diagnosis at or prior to donation took longer to return to their self‐reported predonation level of functioning (odds ratio = 3.78, P = 0.016). Medical complications were unrelated to self‐reported recovery time. Multiple regression analysis revealed 4 independent predictors of greater life interference: less time since donation (b = 0.11, P < 0.001), income lower than CAD

Collaboration


Dive into the Susan Holtzman's collaboration.

Top Co-Authors

Avatar

Anita DeLongis

University of British Columbia

View shared research outputs
Top Co-Authors

Avatar

David R. Grant

Toronto General Hospital

View shared research outputs
Top Co-Authors

Avatar

Donna E. Stewart

University of British Columbia

View shared research outputs
Top Co-Authors

Avatar

Susan E. Abbey

University of British Columbia

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge