Kathleen A. Griffith

Effects and moderators of exercise on quality of life and physical function in patients with cancer: An individual patient data meta-analysis of 34 RCTs

This individual patient data meta-analysis aimed to evaluate the effects of exercise on quality of life (QoL) and physical function (PF) in patients with cancer, and to identify moderator effects of demographic (age, sex, marital status, education), clinical (body mass index, cancer type, presence of metastasis), intervention-related (intervention timing, delivery mode and duration, and type of control group), and exercise-related (exercise frequency, intensity, type, time) characteristics. Relevant published and unpublished studies were identified in September 2012 via PubMed, EMBASE, PsycINFO, and CINAHL, reference checking and personal communications. Principle investigators of all 69 eligible trials were requested to share IPD from their study. IPD from 34 randomised controlled trials (n=4519 patients) that evaluated the effects of exercise compared to a usual care, wait-list or attention control group on QoL and PF in adult patients with cancer were retrieved and pooled. Linear mixed-effect models were used to evaluate the effects of the exercise on post-intervention outcome values (z-score) adjusting for baseline values. Moderator effects were studies by testing interactions. Exercise significantly improved QoL (β=0.15, 95%CI=0.10;0.20) and PF (β=0.18, 95%CI=0.13;0.23). The effects were not moderated by demographic, clinical or exercise characteristics. Effects on QoL (βdifference_in_effect=0.13, 95%CI=0.03;0.22) and PF (βdifference_in_effect=0.10, 95%CI=0.01;0.20) were significantly larger for supervised than unsupervised interventions. In conclusion, exercise, and particularly supervised exercise, effectively improves QoL and PF in patients with cancer with different demographic and clinical characteristics during and following treatment. Although effect sizes are small, there is consistent empirical evidence to support implementation of exercise as part of cancer care.

Measures of chemotherapy-induced peripheral neuropathy: A systematic review of psychometric properties

Chemotherapy‐induced peripheral neuropathy (CIPN) remains the principal dose‐limiting toxicity of many agents. This systematic review evaluates available CIPN measures and provides rationale for selection of measures in this field. Searches of Medline (1966–2010), CINAHL (1966–2010), Embase (1966–2010), and Cochrane (1988–2010) databases were performed. To be selected, studies had to include (1) subjects receiving peripheral neurotoxic chemotherapy for cancer and (2) a primary purpose of psychometric evaluation of CIPN measures. A modified Quality of Diagnostic Accuracy Studies (QUADAS) tool coded psychometric study quality, with 0–7 score overall possible (higher score indicating better quality). A total of 15 studies qualified for evaluation. Overall studies were of moderate quality, with 10 of 15 receiving a 4–5 QUADAS score. Averaged quality scores for two repeatedly studied measures, Total Neuropathy Score (TNS) versions and Functional Assessment of Cancer‐Gynecologic Oncology Group, neurotoxicity (FACT/GOG‐Ntx), were 5.4 and 4.5, respectively. Two measures emerged as potentially useful for clinical trials and patient care. The FACT/GOG‐Ntx is a subjective measure of CIPN‐related quality of life (QoL). TNS clinical versions incorporate both subjective measures and objective examinations of nerve function. However, to improve QUADAS scoring, additional research is needed focusing on other psychometric aspects such as responsiveness of CIPN outcome measures.

Who will drop out and who will drop in: Exercise adherence in a randomized clinical trial among patients receiving active cancer treatment

Background:Adherence has significantly affected the efficacy of a randomized clinical trial (RCT) to test exercise interventions. Objective:The aims of this study were to analyze exercise-related adherence patterns among patients receiving active cancer treatment and to identify factors related to exercise adherence and contamination in both the intervention and control groups. Methods:This is a secondary analysis of data from an RCT of a home-based walking intervention for patients receiving active cancer treatment. Hierarchical Poisson regression analysis was used to identify factors related to exercise adherence and exercise contamination in the exercise intervention and control groups. Results:A total of 126 patients finished the study. Exercise adherence rate in the intervention group was 32.35%, whereas exercise contamination rate in the control group was 12.07%. Independent predictors of adherence for the exercise group were baseline physical fitness, pretreatment fatigue level, treatment-related mood disturbance, and marital status (P < .01); exercise history significantly predicted exercise contamination (P < .00) in the control group. Conclusion:Adherence remains an issue in an exercise RCT among patients on active cancer treatment. Adherence is related to symptom, physical function, and exercise history. Implications for Practice:Exercise researchers should consider stratifying samples based on pretreatment variables found to be significantly associated with outcome variables in this study to reduce confounding effects. Oncology clinicians can use the study findings to appropriately tailor strategies to encourage exercise adherence among patients receiving active cancer treatment so that these patients can receive the known benefits of exercise.

Impact of a Home-Based Walking Intervention on Outcomes of Sleep Quality, Emotional Distress, and Fatigue in Patients Undergoing Treatment for Solid Tumors

Exercise use among patients with cancer has been shown to have many benefits and few notable risks. The purpose of this study was to evaluate the impact of a home-based walking intervention during cancer treatment on sleep quality, emotional distress, and fatigue. Methods. A total of 138 patients with prostate (55.6%), breast (32.5%), and other solid tumors (11.9%) were randomized to a home-based walking intervention or usual care. Exercise dose was assessed using a five-item subscale of the Cooper Aerobics Center Longitudinal Study Physical Activity Questionnaire. Primary outcomes of sleep quality, distress, and fatigue were compared between the two study arms. Results. The exercise group (n = 68) reported more vigor (p = .03) than control group participants (n = 58). In dose response models, greater participation in aerobic exercise was associated with 11% less fatigue (p < .001), 7.5% more vigor (p = .001), and 3% less emotional distress (p = .03), after controlling for intervention group assignment, age, and baseline exercise and fatigue levels. Conclusion. Patients who exercised during cancer treatment experienced less emotional distress than those who were less active. Increasing exercise was also associated with less fatigue and more vigor. Home-based walking is a simple, sustainable strategy that may be helpful in improving a number of symptoms encountered by patients undergoing active treatment for cancer.

African Americans With a Family History of Colorectal Cancer: Barriers and Facilitators to Screening

PURPOSE/OBJECTIVES To explore barriers and facilitators of screening for colorectal cancer (CRC), as well as suggestions for improving screening among African Americans with first-degree relatives with CRC. RESEARCH APPROACH A qualitative, descriptive approach involving focus groups. SETTING A community healthcare clinic in Baltimore, MD. PARTICIPANTS 14 African American men and women aged 40 or older with at least one first-degree family member affected by CRC. METHODOLOGIC APPROACH In-depth focus groups were conducted until thematic saturation was achieved. Thematic analysis and data reduction were conducted using ATLAS.ti, version 5.0. MAIN RESEARCH VARIABLES CRC screening barriers and facilitators. FINDINGS The participants were mostly male, insured, and had a parent with CRC. Commonly reported barriers to CRC screening included fear of serious illness, mistrust of the medical establishment, potential screening discomfort, lack of information on CRC risk factors, lack of healthcare access, absence of symptoms, no knowledge of CRC screening benefits, community reticence about cancer, and CRC myths. Facilitating factors for CRC screening included a belief of personal risk for CRC, physician recommendations, and acknowledgment of age as a risk factor. Suggestions to increase screening rates included distribution of culturally appropriate and community-based efforts (e.g., mobile units, church-based interventions). Participants also suggested ways to increase motivation and provide social support for screening patients. CONCLUSIONS Additional research is needed to identify and test effective screening approaches for this underserved group at increased risk for CRC. Study results suggest that cancer risk and screening education, coupled with screening opportunities in the community, may yield increased screening rates. INTERPRETATION Lack of knowledge about CRC and CRC screening exists in the study population. Promoting screening across generations, developing and disseminating culturally appropriate educational materials within the community, and encouraging older individuals to screen to take care of their family may be appropriate interventions.

Use of a supportive care team for screening and preemptive intervention among multiple myeloma patients receiving stem cell transplantation.

Although peripheral blood stem-cell transplantation (PBSCT) has assumed a growing role in the treatment of multiple myeloma, very few studies have examined the functional and quality-of-life changes experienced by myeloma patients in the transplant setting. Multiple myeloma is characterized by a range of debilitating physical and psychosocial symptoms. However, supportive care needs for patients with this disease are often overlooked or managed only episodically. The current study pilot-tested an interdisciplinary supportive care program designed to provide screening and identify patients at risk early in the course of care. Participants in this pilot project were 61 patients with hematological disorders, predominantly multiple myeloma (85.3%), evaluated during their initial workup. Mean time since diagnosis was 7.4 months. Participants were interviewed by an advanced-practice nurse and completed standardized measures of heath-related quality of life (SF-12), fatigue (POMS-Fatigue), nutritional risk (PG-SGA), pain (Brief Pain Inventory), emotional functioning (Hospital Anxiety and Depression Scale), and sexual concerns (FACIT). Results indicated that difficulties were prevalent across multiple functional domains; 61.4% of patients displayed significant nutritional deficits. Physical functioning was below age-adjusted national norms for 53.5%. Moderate-to-severe fatigue was reported by 39.0%, and one third experienced clinically significant levels of pain, impaired daily functioning associated with pain, and emotional distress. A similar proportion of respondents (33.9%) reported disrupted sexual functioning and difficulty with body image. Findings suggest that early, systematic screening is feasible in a busy transplant center. The prevalence of symptoms highlights the importance of providing screening and proactive intervention for multiple myeloma patients early in the course of treatment and even prior to beginning protocols for high-dose therapy and transplantation.

Racial and ethnic differences in experimental pain sensitivity: Systematic review and meta-analysis

Abstract Our objective was to describe the racial and ethnic differences in experimental pain sensitivity. Four databases (PubMed, EMBASE, the Cochrane Central Register of Controlled Trials, and PsycINFO) were searched for studies examining racial/ethnic differences in experimental pain sensitivity. Thermal–heat, cold–pressor, pressure, ischemic, mechanical cutaneous, electrical, and chemical experimental pain modalities were assessed. Risk of bias was assessed using the Agency for Healthcare Research and Quality guideline. Meta-analysis was used to calculate standardized mean differences (SMDs) by pain sensitivity measures. Studies comparing African Americans (AAs) and non-Hispanic whites (NHWs) were included for meta-analyses because of high heterogeneity in other racial/ethnic group comparisons. Statistical heterogeneity was assessed by subgroup analyses by sex, sample size, sample characteristics, and pain modalities. A total of 41 studies met the review criteria. Overall, AAs, Asians, and Hispanics had higher pain sensitivity compared with NHWs, particularly lower pain tolerance, higher pain ratings, and greater temporal summation of pain. Meta-analyses revealed that AAs had lower pain tolerance (SMD: −0.90, 95% confidence intervals [CIs]: −1.10 to −0.70) and higher pain ratings (SMD: 0.50, 95% CI: 0.30–0.69) but no significant differences in pain threshold (SMD: −0.06, 95% CI: −0.23 to 0.10) compared with NHWs. Estimates did not vary by pain modalities, nor by other demographic factors; however, SMDs were significantly different based on the sample size. Racial/ethnic differences in experimental pain sensitivity were more pronounced with suprathreshold than with threshold stimuli, which is important in clinical pain treatment. Additional studies examining mechanisms to explain such differences in pain tolerance and pain ratings are needed.

Biological, psychological and behavioral, and social variables influencing colorectal cancer screening in African Americans.

Background: Provider recommendation of colorectal cancer (CRC) screening is an important predictor of screening in African Americans. Little is known about influences of screening in African Americans without provider recommendations. Objectives: The objectives of this study were to test, using the biopsychosocial (BPS) model, the relative predictive strength for screening of variables grouped into biological, psychological and behavioral, and social system factors and to compare CRC screening predictors in African Americans with and without provider recommendations. Methods: Secondary analysis of the 2002 Maryland Cancer Survey data was done using (a) hierarchical logistic regression to examine the relative influence of factors on screening and (b) simultaneous logistic regression to examine predictors of screening in individuals with and without provider recommendations to screen. Factors included biological (age and gender), psychological and behavioral (mammogram, prostate specific antigen, body mass index, activity level, fruit and vegetable consumption, alcohol, smoking, and cancer perceptions), and social system (education, employment, insurance, and healthcare provider access). Results: The social system factor influenced CRC screening in the overall sample (n = 492). In African Americans with provider recommendations (n = 337), the very active were 2.43 (95% confidence interval [CI] = 1.11-5.28) times more likely to screen than were less active. Insured were 3.25 (95% CI = 1.14-9.31) times more likely to screen than were uninsured. In African Americans without provider recommendations (n = 155), 65- to 69-year-olds were 9.99 (95% CI = 2.31-43.32) times more likely to screen than were those 50- to 54-year-olds without screening. Discussion: The BPS model confirms social system factor strength in influencing CRC screening in African Americans. Identifying other social system variables that enhance healthcare provider access is critical to increase provider visits, which will generate recommendations and subsequent CRC screening.

Correspondence between neurophysiological and clinical measurements of chemotherapy-induced peripheral neuropathy: secondary analysis of data from the CI-PeriNomS study

Chemotherapy‐induced peripheral neuropathy (CIPN) lacks standardized clinical measurement. The objective of the current secondary analysis was to examine data from the CIPN Outcomes Standardization (CI‐PeriNomS) study for associations between clinical examinations and neurophysiological abnormalities. Logistic regression estimated the strength of associations of vibration, pin, and monofilament examinations with lower limb sensory and motor amplitudes. Examinations were classified as normal (0), moderately abnormal (1), or severely abnormal (2). Among 218 participants, those with class 1 upper extremity (UE) and classes 1 or 2 lower extremity (LE) monofilament abnormality were 2.79 (95% confidence interval [CI]: 1.28–6.07), 3.49 (95%CI: 1.61–7.55), and 4.42 (95%CI: 1.35–14.46) times more likely to have abnormal sural nerve amplitudes, respectively, compared to individuals with normal examinations. Likewise, those with class 2 UE and classes 1 or 2 LE vibration abnormality were 8.65 (95%CI: 1.81–41.42), 2.54 (95%CI: 1.19–5.41), and 7.47 (95%CI: 2.49–22.40) times more likely to have abnormal sural nerve amplitudes, respectively, compared to participants with normal examinations. Abnormalities in vibration and monofilament examinations are associated with abnormal sural nerve amplitudes and are useful in identifying CIPN.

Interventions for the Treatment of Aromatase Inhibitor-Associated Arthralgia in Breast Cancer Survivors: A Systematic Review and Meta-analysis.

Background: Aromatase inhibitors (AIs) have been established as successful adjuvant therapy for breast cancer survivors. Unfortunately, nearly half of women taking AIs report joint pain, AI-associated arthralgia (AIA). Aromatase inhibitor–associated arthralgia often results in noncompliance, which could lead to cancer recurrence. Objective: The purpose of this study was to identify current pain management of AIA and to evaluate the study quality and effects of interventions. Methods: Nineteen articles published from 2000 to August 2015 were identified using PubMed, CINAHL, PsycINFO, Web of Science, and additional records. Study quality was evaluated by the Quality Assessment Tool for Quantitative Studies. Meta-analysis was used to obtain effect sizes of interventions on pain and subgroups. Results: Five types of interventions emerged: pharmacological approaches, acupuncture, nutritional supplementation, relaxation techniques, and physical exercise. Six studies were strong, 8 were moderate, and 5 were weak in quality. The overall effect size of the interventions on pain was large; pharmacological approaches, acupuncture, and relaxation techniques showed moderate to large effects on pain, whereas nutritional supplementation and physical exercise had no significant effects on it. Conclusion: The evidence was based on a body of research with moderate study quality. Although the overall effect of interventions is large, further investigation into the influence of nutrition and physical exercise is needed to better discern their potential for pain management. Implication for Practice: Oncology nurses may be able to implement such validated interventions as pain management modalities to mitigate the symptoms so that breast cancer survivors remain compliant with AIA therapy.