Dose and Duration of Opioid Use in Propensity Score-Matched, Privately Insured Opioid Users With and Without Spinal Cord Injury

Opioid and benzodiazepine use among a population-based cohort of adults with chronic spinal cord injury: Correspondence between self-report and state prescription monitoring data

OBJECTIVE

To compare self-reported opioid and benzodiazepine use to rates of prescriptions dispensed among persons with chronic spinal cord injury (SCI), to evaluate the extent of potential underreporting.

DESIGN

Cross-sectional self-report assessment (SRA) and retrospective review of prescription monitoring program (PMP) data.

SETTING

Community dwelling adults in the Southeastern United States (US).

PARTICIPANTS

345 adults (>18 years old) with chronic (>1 year) SCI who were identified through a state population-based SCI registry and who responded to SRA opioid use questions in a parent study.

INTERVENTIONS

Not Applicable MAIN OUTCOME MEASURES: Self-reported prescription pain reliever, sedative, and tranquilizer use, and prescriptions dispensed based on PMP data. We compared self-reported past year utilization with records of dispensed prescriptions to assess potential underreporting, defined as reporting "never" using either opioids (pain relievers) or benzodiazepines (sedatives/tranquilizers) in the past year, but having had two or more respective prescriptions dispensed in the year prior to the SRA.

RESULTS

Among the 345 participants who responded to the opioid use questions, we were able to match 252 to the PMP; reasons for not matching include not filling a controlled substance prescription in-state, either due to lack of reportable prescriptions or the prescription was dispensed out of state. Evaluating each prescription medication, rates of underreporting for each drug ranged from 0.4% - 4% for Hydrocodone, Oxycodone, Tramadol, Codeine, Buprenorphine and Hydromorphone. There was 100% agreement in the self-reported use and dispensed records for Fentanyl, Oxymorphone, Meperidine, and Methadone. The rates of potential underreporting of Benzodiazepines were less than 2%. Overall, of the 252 matched individuals, 11% underreported opioids (2 or more prescriptions dispensed) and 1% underreported benzodiazepines.

CONCLUSIONS

The findings suggest considerable agreement between self-reported and dispensed prescription medication use, and only minimal potential underreporting of select opioids and benzodiazepines, confirming the appropriateness of self-report of these prescription medications with people with SCI.

Healthcare providers perspective of chronic pain management in persons with traumatic spinal cord injury accessing the public system in a region of South Africa

PURPOSE

Persons with traumatic spinal cord injury (PWTSCI) have expressed a lack of education from healthcare providers and poor shared-decision making between providers and clients. The aim was to explore the healthcare providers' perspective on factors influencing the optimal management of chronic pain.

METHODS

Healthcare providers were recruited from two institutions at tertiary healthcare level. Interviews explored current chronic pain management practices, influencing factors and recommendations for improvement. Data saturation occurred after interviewing 11 participants. Thematic analysis was used through a socio-ecological model.

RESULTS

The challenges to optimal pain management include appropriate assessment and management of psychological health (intrapersonal level), substance abuse amongst patients (intrapersonal level), access to medication for providers and lack of knowledge by providers (interpersonal and organizational level). To improve chronic pain management, an interdisciplinary team approach should be operationalized at policy and organizational level, monitoring and adjustment of interventions should take place (interpersonal), and family members/caregivers should be involved in the planning and monitoring (interpersonal).

CONCLUSION

Factors, at the interpersonal, intrapersonal, organizational and policy levels, influence optimal chronic pain management in the traumatic spinal cord injury (TSCI) population. To mitigate challenges, guidelines for chronic pain management should be developed, particularly for low-resourced developing countries.

Prevalence of opioid use in adults with spinal cord injury: A systematic review and meta-analysis

OBJECTIVE

To determine the prevalence, reported harms and factors associated with opioid use among adults with spinal cord injury (SCI) living in the community.

STUDY DESIGN

Systematic review and meta-analysis.

METHODS

Comprehensive literature searches were conducted in PubMed (MEDLINE), EMBASE, CINAHL, Web of Science and Scopus for articles published between 2000 and 2023. Risk of bias was assessed using a prevalence-specific tool. Random-effects meta-analyses were conducted to pool prevalence data for any context of opioids. Sensitivity and subgroup analyses were also performed. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed, and the study protocol was registered via Prospero (CRD42022350768).

RESULTS

Of the 4969 potential studies, 38 were included in the review. Fifty-three percent of studies had a low risk of bias, with a high risk of bias in 5% of studies. The pooled prevalence for the 38 studies included in the meta-analysis (total cohort size of 50,473) across any opioid context was 39% (95% confidence interval [CI], 32-47). High heterogeneity was evident, with a prediction interval twice as wide as the 95% CI (prediction interval, 7-84%). Mean or median opioid dose was unreported in 95% of studies. Opioid dose and factors related to opioids were also rarely explored in the SCI populations.

CONCLUSIONS

Results should be interpreted with caution based on the high heterogeneity and imprecise pooled prevalence of opioids. Contextual details including pain, cohort-specific injury characteristics and opioid dosage were inconsistently reported, indicating a clear need for additional studies in a population at greater risk of experiencing opioid-related adverse effects.

Prescription opioid dispensing rates in the 12-months post-discharge after acute spinal cord injury: An observational study

OBJECTIVES

To determine rates of opioid and concomitant antidepressant, anticonvulsant and benzodiazepine dispensing in the post-discharge period, after acute spinal cord injury (SCI).

DESIGN

Single-center prospective cohort study with 12-month linked pharmaceutical data.

SETTING

Community pharmaceutical dispensing.

PARTICIPANTS

Patients ≥18 who were diagnosed with a SCI between March 2017 and March 2018.

OUTCOME MEASURES

Rates of dispensing of opioid and concomitant antidepressant, anticonvulsant and benzodiazepine medications in the 12-month post-discharge from a specialist inpatient Spinal Injuries Unit.

RESULTS

Sixty-eight participants volunteered for the study. Of the medications dispensed in the 12-months after discharge, 16% were opioids, which were supplied to 56% of participants. Forty-six percent of participants had concurrent dispensing of at least one other medication class of interest (antidepressants, anticonvulsants, or benzodiazepines). Participants with opioids prescribed at discharge were 6.5 times more likely to have been dispensed opioids in the 12-months following discharge compared to those who did not have opioids listed at discharge (OR = 6.5, 95% CI = 2.2, 19.0, P < .001).

CONCLUSIONS

Longer-term opioid prescribing plus concomitant analgesia and sleep medications in the post-acute period after SCI were common. Chronic opioid use and the polypharmacy observed is concerning, given the potential for dependence, tolerance and increased drug interactions and associated adverse effects. Both issues point to the need for clear discharge instructions for primary care prescribers and regular monitoring to manage pharmacotherapy therapeutic benefits and risks alongside non-medication therapies.

Relationships of self-reported opioid and benzodiazepine use with health-related quality of life among adults with spinal cord injury

BACKGROUND

There is limited understanding of the relationships between prescription opioid and benzodiazepine use and indices of health-related quality of life (HRQOL) among those with spinal cord injuries (SCI).

OBJECTIVE

To identify the relationships between self-reported prescription opioid and benzodiazepine use and two indicators of HRQOL, number of days in poor physical health and poor mental health in the past 30 days among adults with SCI.

METHODS

A cross-sectional cohort study of 918 adults with chronic (>1 year), traumatic SCI living in the Southeastern United States was conducted. Participants completed a self-report assessment (SRA).

RESULTS

In the preliminary model, both opioid and benzodiazepine use were associated with a greater number of days in poor physical health and poor mental health in the past month. After controlling for health conditions (pain intensity, spasticity, anxiety and perceived sleep insufficiency), opioid use was associated with 2.04 (CI = 0.69; 3.39) additional poor physical health days in the past 30 days, and benzodiazepine use was associated with 2.18 (CI = 0.70; 3.64) additional days of poor mental health. Age was associated with greater number of poor physical health days and fewer poor mental health days. Lower income was associated with poor mental health days. Most of the health conditions were significantly related to the number of past month poor physical and mental health days.

CONCLUSIONS

Opioid and benzodiazepine use are associated with poor physical and mental HRQOL, even after controlling for health conditions. Treatment strategies should consider potential unanticipated negative consequences of pharmacological interventions.

Self-reported benzodiazepine use among adults with chronic spinal cord injury in the southeastern USA: associations with demographic, injury, and opioid use characteristics

STUDY DESIGN

Cross-sectional cohort study.

OBJECTIVES

To examine: (1) the self-reported frequency of specific prescription benzodiazepine use, (2) concurrent benzodiazepine and opioid use, and (3) sociodemographic, SCI, and opioid use factors associated with frequent benzodiazepine use.

SETTING

Community.

METHODS

Participants included 918 community dwelling adults with chronic ( > 1 year) traumatic SCI originally identified from a specialty hospital or a state-based surveillance system. Self-reported frequency of specific prescription benzodiazepines and opioids used, concurrent use, and factors associated with use were assessed.

RESULTS

Twenty percent reported any benzodiazepine use in the past year and 13% reported at least weekly use. Concurrent daily or weekly use of benzodiazepines and opioids was reported by 6.5%, with those individuals taking an average of 1.1 (0.4) benzodiazepines and 1.4 (0.6) opioids. Compared to younger adults, those 50-65 years old had lower odds of at least weekly benzodiazepine use (OR = 0.50, 95% CI, 0.29-0.89, p-value = 0.02). Non-Hispanic Blacks reported lower use of benzodiazepines compared to non-Hispanic whites (OR = 0.32, 95% CI, 0.15-0.68, p-value = <0.01). Weekly opioid use was associated with higher odds of using benzodiazepines (OR = 3.10, 95%CI, 1.95-4.95, p-value = <0.01).

CONCLUSIONS

Benzodiazepine use was commonly reported among those with SCI. Despite the potential risks, a high portion of those who reported benzodiazepine use also reported prescription opioid use. The findings highlight the need for monitoring of prescription medication use to avoid potentially risky concurrent use and adverse outcomes.

Relations Between Self-reported Prescription Hydrocodone, Oxycodone, and Tramadol Use and Unintentional Injuries Among Those With Spinal Cord Injury

OBJECTIVE

To identify the relations of 3 frequently used prescription opioids (hydrocodone, oxycodone, tramadol) with unintentional injuries, including fall-related and non-fall-related injuries among adults with chronic, traumatic spinal cord injury (SCI).

DESIGN

Cross-sectional cohort study.

SETTING

Community setting; Southeastern United States.

PARTICIPANTS

Adult participants (N=918) with chronic traumatic SCI were identified from a specialty hospital and state population-based registry and completed a self-report assessment.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Self-reported fall-related and non-fall-related unintentional injuries serious enough to receive medical care in a clinic, emergency room, or hospital within the previous 12 months.

RESULTS

Just over 20% of participants reported ≥1 unintentional injury in the past year, with an average of 2.16 among those with ≥1. Overall, 9.6% reported fall-related injuries. Only hydrocodone was associated with any past-year unintentional injuries. Hydrocodone taken occasionally (no more than monthly) or regularly (weekly or daily) was related to 2.63 (95% confidence interval [CI], 1.52-4.56) or 2.03 (95% CI, 1.15-3.60) greater odds of having ≥1 unintentional injury in the past year, respectively. Hydrocodone taken occasionally was also associated with past-year non-fall-related injuries (OR, 2.20; 95% CI, 1.12-4.31). Each of the 3 opioids was significantly related to fall-related injuries. Taking hydrocodone occasionally was associated with 2.39 greater odds of fall-related injuries, and regular use was associated with 2.31 greater odds. Regular use of oxycodone was associated with 2.44 odds of a fall-related injury (95% CI, 1.20-4.98), and regular use of tramadol was associated with 2.59 greater odds of fall-related injury (95% CI, 1.13-5.90).

CONCLUSIONS

Injury prevention efforts must consider the potential effect of opioid use, particularly hydrocodone. For preventing fall-related injuries, each of the 3 opioids must be considered.

Perspectives of people with spinal cord injury on a pain education resource

Introduction

Spinal cord injury (SCI) often leads to neuropathic pain that negatively affects quality of life. Several qualitative research studies in individuals with SCI who experience neuropathic pain indicate the lack of adequate information about pain. We previously developed an educational resource, the SeePain, based on scientific literature and a series of qualitative interviews of people with SCI, their significant others/family members, and SCI healthcare providers.

Methods

However, to quantitatively evaluate the utility of this educational resource in a larger sample, we examined the agreement and usefulness ratings of statements regarding clarity/comprehensibility, content, and format of the SeePain, derived from the thematic analysis of our previous qualitative interviews. Participants completed a survey that provided a digital version of the SeePain and then rated their agreement/usefulness with the statements using numerical rating scales.

Results

There were overall high perceived agreement and usefulness ratings regarding the SeePain's clarity, content, and format. A factor analysis reduced the agreement and usefulness ratings into 4 components (content, clarity, format, and delivery medium). Group comparisons showed that individuals with higher education were more likely to endorse electronic and website formats, and the usefulness of a shorter version of the SeePain; females and younger individuals showed greater endorsement for clarity. Finally, higher pain intensity ratings were associated with greater agreement and usefulness of the content of the SeePain.

Discussion

Overall, these results support the utility of the SeePain as a source of information regarding pain that may facilitate communication about pain and its management following SCI.

Community Opioid Dispensing after Injury (CODI): Cohort characteristics and opioid dispensing patterns

BACKGROUND

Despite a focus of opioid-related research internationally, there is limited understanding of long-term opioid use in adults following injury. We analysed data from the 'Community Opioid Dispensing after Injury' data linkage study.

AIMS

This paper aims to describe the baseline characteristics of the injured cohort and report opioid dispensing patterns following injury-related hospitalisations.

METHODS

Retrospective cohort study of adults hospitalised after injury (ICD-10AM: S00-S99, T00-T75) in Queensland, Australia between 1 January 2014 and 31 December 2015, prior to implementation of opioid stewardship programs. Data were person-linked between hospitalisation, community opioid dispensing and mortality collections. Data were extracted for 90-days prior to the index hospital admission, to establish opiate naivety, to 720 days after discharge. Median daily oral morphine equivalents (i.e., dose) were averaged for each 30-day interval. Cumulative duration of dispensing and dose were compared by demographic and clinical characteristics, stratified by drug dependency status.

RESULTS

Of the 129,684 injured adults, 61.3 % had no opioids dispensed in the 2-year follow-up period. Adults having any opioids dispensed in the community (38.7 %) were more likely older, female, to have fracture injuries and injuries with a higher severity, compared to those with no opioids dispensed. Longer durations and higher doses of opioids were seen for those with pre-injury opioid use, more hospital readmissions and repeat surgeries, as well as those who died in the 2-year follow-up period. Median dispensing duration was 24-days with a median daily end dose of 13 oral morphine equivalents. If dispensing occurred prior to the injury, duration increased 10-fold and oral morphine equivalents doubled. Adults with a documented dependency prior to, or after, the injury had significantly longer durations of use and higher doses than the rest of the cohort receiving opioids. Approximately 7 % of the total cohort continued to be dispensed opioids at 2-years post injury.

CONCLUSION

This is a novel population-level profile of opioid dispensing patterns following injury-related hospitalisation, described for the time period prior to the implementation of opioid stewardship programs and regulatory changes in Queensland. Detailed understanding of this pre-implementation period is critical for evaluating the impact of these changes moving forward.

Self-Reported Prescription Opioid Use Among Participants with Chronic Spinal Cord Injury

Background

Individuals with spinal cord injuries (SCI) experience high rates of prescription opioid use, yet there is limited data on frequency of opioid use and specific medications being taken.

Objectives

To examine the frequency of self-reported prescription opioid use among participants with SCI and the relationship with demographic, injury, and socioeconomic characteristics.

Methods

A cohort study of 918 adults with SCI of at least 1-year duration completed a self-report assessment (SRA) that indicated frequency of specific prescription opioid use based on the National Survey on Drug Use and Health (NSDUH).

Results

Forty-seven percent of the participants used at least one prescription opioid over the last year; the most frequently used was hydrocodone (22.1%). Nearly 30% used a minimum of one opioid at least weekly. Lower odds of use of at least one opioid over the past year was observed for Veterans (odds ratio [OR] = 0.60, 95% CI = 0.38, 0.96) and those with a bachelor's degree or higher (OR = 0.63, 95% CI = 0.44, 0.91). When restricting the analysis to use of at least one substance daily or weekly, lower odds of use was observed for those with a bachelor's degree or higher and those with income ranging from $25,000 to $75,000+. None of the demographic or SCI variables were significantly related to prescription opioid use.

Conclusion

Despite the widely established risks, prescription opioids were used daily or weekly by more than 28% of the participants. Usage was only related to Veteran status and socioeconomic status indicators, which were protective of use. Alternative treatments are needed for those with the heaviest, most regular usage.

Pain medication misuse in the South African spinal cord injury context

Background

Pain after spinal cord injury (SCI) is debilitating and has been reported to be difficult to treat, despite pharmacological interventions. Pain medication misuse (PMM) and associated individual factors among people with spinal cord injury (PWSCI) are scarce.

Aim

To determine PMM and the associated factors in PWSCI.

Setting

Homes of community-dwelling manual wheelchair users with SCI in South Africa.

Methods

Community-dwelling PWSCI (n = 122) were consecutively sampled and the Pain Medication Questionnaire (PMQ) was used to determine PMM. Descriptive statistics, Fisher's exact test, independent t-tests, and simple linear regression tests were performed using SPSS v27. Testing was conducted at the 0.05 level of significance.

Results

Eighty-five per cent of the participants reported the presence of pain and 48.1% of them used pain medication. Forty-four percent of people who used pain medication scored ≥ 30, indicative of serious aberrant drug-taking behaviours. Opioids were mainly used for neuropathic pain and in combination with other types of medications such as anticonvulsants and non-steroidal anti-inflammatories (44.0%). Pain severity and the type of pain medication were found to be predictors of PMM (p < 0.01 respectively).

Conclusion

Pain relief after SCI remains difficult to achieve, with an evident high risk of PMM, which may lead to long-lasting side effects, dependency, or overdose.

Contribution

This study has shown the need for the assessment of the potential risk of dependency before prescribing pain medication, particularly opioids to PWSCI.

A preliminary study evaluating self-reported effects of cannabis and cannabinoids on neuropathic pain and pain medication use in people with spinal cord injury

Approximately 60% of individuals with a spinal cord injury (SCI) experience neuropathic pain, which often persists despite the use of various pharmacological treatments. Increasingly, the potential analgesic effects of cannabis and cannabinoid products have been studied; however, little research has been conducted among those with SCI-related neuropathic pain. Therefore, the primary objective of the study was to investigate the perceived effects of cannabis and cannabinoid use on neuropathic pain among those who were currently or had previously used these approaches. Additionally, the study aimed to determine if common pain medications are being substituted by cannabis and cannabinoids. Participants (N = 342) were recruited from existing opt-in listserv sources within the United States. Of those, 227 met the inclusion criteria and were enrolled in the study. The participants took part in an anonymous online survey regarding past and current use of cannabis and their perceived effects on neuropathic pain, including the use of pain medication. Those in the sample reported average neuropathic pain intensity scores over the past week of 6.8 ± 2.1 (0 to 10 scale), reflecting a high moderate to severe level of pain. Additionally, 87.9% noted that cannabis reduced their neuropathic pain intensity by more than 30%, and 92.3% reported that cannabis helped them to better deal with their neuropathic pain symptoms. Most participants (83.3%) also reported substituting their pain medications with cannabis, with the most substituted medication categories being opioids (47.0%), gabapentinoids (42.8%) and over-the-counter pain medications (42.2%). These preliminary results suggest that cannabis and cannabinoids may be effective in reducing neuropathic pain among those with SCI and may help to limit the need for certain pain medications.

Indicators of publicly funded prescription opioid use among persons with traumatic spinal cord injury in Ontario, Canada

OBJECTIVE

To describe the proportion and identify predictors of community-dwelling individuals with traumatic spinal cord injury (TSCI) who were dispensed ≥1 publicly funded opioid in the year after injury using a retrospective cohort study.

SETTING

Ontario, Canada.

PARTICIPANTS, INTERVENTIONS, OUTCOME MEASURES

We used administrative data to identify predictors of receiving publicly funded prescription opioids during the year after injury for individuals who were injured between April 2004 and March 2015. Our outcome was modeled using robust Poisson multivariable regression and we reported adjusted relative risks (aRR) with 95% confidence intervals.

RESULTS

In our retrospective cohort of 934 individuals with TSCI who were eligible for the provincial drug program, 510 (55%) received ≥1 prescription opioid in the year after their injury. Most individuals were male (71%) and the median age was 63 years (interquartile range: 42-72). Being male (aRR 1.15, 95% confidence interval [CI] 1.01-1.31), having chronic obstructive pulmonary disease (aRR 1.25, 95% CI 1.05-1.50), and using prescription opioids before injury (aRR 1.46, 95% CI 1.29-1.66) were significantly associated with receiving opioids in the year after TSCI. Short durations of hospital stay after injury were also identified as being a significant risk factor of outpatient opioid use (aRR = 1.28, 95% CI = 1.08-1.51) when compared to longer hospital stays.

CONCLUSION

This study presented evidence showing that most individuals eligible for Ontario's public drug program who experienced a TSCI used opioids in the year following their injury. Due to the paucity of research on this population and their potential for elevated risks of adverse events, it is important for additional studies to be conducted on opioid use in this population to understand short-term and long-term risks and benefits.

Spinal cord injury and prescribed opioids for pain: a scoping review

OBJECTIVE

Spinal cord injury (SCI) is a life-altering neurological condition affecting physical and psycho-social functioning and associated high rates of pain. Thus, individuals with SCI may be more likely to be exposed to prescription opioids. A scoping review was conducted to synthesize published research findings on post-acute SCI and prescription opioid use for pain, identify literature gaps, and propose recommendations for future research.

METHODS

We searched 6 electronic bibliographic databases (PubMed [MEDLINE], Ovid [MEDLINE], EMBASE, Cochrane Library, CINAHL, PsychNET) for articles published from 2014 through 2021. Terms for "spinal cord injury" and "prescription opioid use" were used. Included articles were in English and peer reviewed. Data were extracted using an electronic database by 2 independent reviewers. Opioid use risk factors for chronic SCI were identified and a gap analysis was performed.

RESULTS

Of the 16 articles included in the scoping review, a majority were conducted in the United States (n = 9). Most articles lacked information on income (87.5%), ethnicity (87.5%), and race (75%). Prescription opioid use ranged from 35% to 64% in articles reporting this information (n = 7 articles, n = 3675 participants). Identified risk factors for opioid use included middle age, lower income, osteoarthritis diagnosis, prior opioid use, and lower-level spinal injury. Limited reporting of diversity in study populations, absence of risk of polypharmacy, and limited high quality methodology were identified gaps.

CONCLUSIONS

Future research should report data on prescription opioid use in SCI populations, with additional demographics such as race, ethnicity, and income, given their importance to risk outcomes.

Assessment of high-risk opioid use metrics among individuals with spinal cord injury: A brief report

OBJECTIVE

To examine high-risk opioid prescription metrics among individuals with chronic spinal cord injury (SCI) living in South Carolina.

DESIGN

Cohort Study.

SETTING

Two statewide population-based databases, an SCI Surveillance Registry and state prescription drug monitoring program (PDMP).

PARTICIPANTS

Linked data was obtained for 503 individuals with chronic (>1year-post injury) SCI who were injured in 2013 or 2014 and who survived at least 3 years post-injury.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURE(S)

Opioid prescription metrics were obtained from the PDMP. Fill data during the period between January 1, 2014 and December 31, 2017 were analyzed to assess high-risk opioid use. Outcomes included: percentage of individuals prescribed chronic opioids, high-dose chronic opioid therapy (daily morphine milligram equivalents (MME) ≥50 and ≥90), and chronic concurrent opioids and benzodiazepines, sedatives, or hypnotics (BSH).

RESULTS

Over half (53%) of the individuals filled an opioid in years 2-3 after injury. Of those, 38% had a concurrent BSH fill during the study period, 76% of which were for benzodiazepines. In any given quarter over the two-year timeframe, over half of the opioid prescriptions were for 60 days or more (chronic opioid prescriptions). Of those, roughly 40% of the individuals had high-dose chronic opioid prescriptions ≥50 MME/d and 25% were ≥90 MME/d. Over 33% had a concurrent BSH prescription for ≥60 days.

CONCLUSIONS

While the number of individuals receiving high-risk opioid prescriptions may not be large, it is a concerning number of prescriptions. The findings suggest a need for more cautious opioid prescribing and monitoring of high-risk use in adults with chronic SCI.

Associations Between Opioid Prescriptions and Use of Hospital-Based Services Among US Adults with Longstanding Physical Disability or Inflammatory Conditions Compared to Other Adults in the Medical Expenditure Panel Survey, 2010-2015

Purpose

To investigate the association of filling opioid prescriptions with healthcare service utilization among a nationally representative sample of adults with disability.

Materials and Methods

The Medical Expenditure Panel Survey (MEPS) for 2010-2015, Panels 15-19, was used to identify adults who were prescribed opioids during each two-year period. We examined the data for associations between opioid prescription filling and the number of emergency department (ED) visits and hospitalizations. The participants were grouped as those with inflammatory conditions or with longstanding physical disability, and a comparison group of those without these conditions.

Results and conclusions

Opioid prescription filling differed among adults with inflammatory conditions and longstanding physical disability compared to the comparison group (44.93% and 40.70% vs 18.10%, respectively). For both groups of people with disability, the relative rates for an ED visit or hospitalization were significantly higher for those who filled an opioid prescription, compared to adults with the same conditions who did not fill an opioid prescription. People with a longstanding physical disability who filled an opioid prescription had the highest rate ratio of ED use and hospitalization. Results from this investigation demonstrate that opioid prescription filling among persons with inflammatory conditions and longstanding physical disabilities is associated with higher rates of ED visits and hospitalizations.

Opioid Dependence and Associated Health Care Utilization and Cost in Traumatic Spinal Cord Injury Population: Analysis Using Marketscan Database

Background

Postinjury pain is a well-known debilitating complication of spinal cord injury (SCI), often resulting in long-term, high-dose opioid use with the potential for dependence. There is a gap in knowledge about the risk of opioid dependence and the associated health care utilization and cost in SCI.

Objectives

To evaluate the association of SCI with postinjury opioid use and dependence and evaluate the effect of this opioid dependence on postinjury health care utilization.

Methods

Using the MarketScan Database, health care utilization claims data were queried to extract 7187 adults with traumatic SCI from 2000 to 2019. Factors associated with post-SCI opioid use and dependence, postinjury health care utilization, and payments were analyzed with generalized linear regression models.

Results

After SCI, individuals were more likely to become opioid users or transition from nondependent to dependent users (negative change: 31%) than become nonusers or transition from dependent to nondependent users (positive change: 14%, p < .0001). Individuals who were opioid-dependent users pre-SCI had more than 30 times greater odds of becoming dependent after versus not (OR 34; 95% CI, 26-43). Dependent users after injury (regardless of prior use status) had 2 times higher utilization payments and 1.2 to 6 times more health care utilization than nonusers.

Conclusion

Opioid use and dependence were associated with high health care utilization and cost after SCI. Pre-SCI opioid users were more likely to remain users post-SCI and were heavier consumers of health care. Pre- and postopioid use history should be considered for treatment decision-making in all individuals with SCI.

Association between spine injury and opioid misuse in a prospective cohort of Level I trauma patients

Objective

To explore patient and treatment factors explaining the association between spine injury and opioid misuse.

Design

Prospective cohort study.

Setting

Level I trauma center in a Midwestern city.

Participants

English speaking patients aged 18 to 75 on Trauma and Orthopedic Surgical Services receiving opioids during hospitalization and prescribed at discharge.

Exposure

Spine injury on the Abbreviated Injury Scale.

Main outcome measures

Opioid misuse was defined by using opioids: in a larger dose, more often, or longer than prescribed; via a non-prescribed route; from someone other than a prescriber; and/or use of heroin or opium. Exploratory factor groups included demographic, psychiatric, pain, and treatment factors. Multivariable logistic regression estimated the association between spine injury and opioid misuse when adjusting for each factor group.

Results

Two hundred eighty-five eligible participants consented of which 258 had baseline injury location data and 224 had follow up opioid misuse data. Most participants were male (67.8%), white (85.3%) and on average 43.1 years old. One-quarter had a spine injury (25.2%). Of those completing follow-up measures, 14 (6.3%) developed misuse. Treatment factors (injury severity, intubation, and hospital length of stay) were significantly associated with spine injury. Spine injury significantly predicted opioid misuse [odds ratio [OR] 3.20, 95% confidence interval [CI] (1.05, 9.78)]. In multivariable models, adjusting for treatment factors attenuated the association between spine injury and opioid misuse, primarily explained by length of stay.

Conclusion

Spine injury exhibits a complex association with opioid misuse that predominantly operates through treatment factors. Spine injury patients may represent a subpopulation requiring early intervention to prevent opioid misuse.

Claims-based measures of prescription opioid utilization: A practical guide for researchers

BACKGROUND

Given the increased attention to the opioid epidemic and the role of inappropriate prescribing, there has been a marked increase in the number of studies using claims data to study opioid use and policies designed to curb misuse. Our objective is to review the medical literature for recent studies that use claims data to construct opioid use measures and to develop a guide for researchers using these measures.

METHODS

We searched for articles relating to opioid use measured in health insurance claims data using a defined set of search terms for the years 2014-2020. Original research articles based in the United States that used claims-based measures of opioid utilization were included and information on the study population and measures of any opioid use, quantity of opioid use, new opioid use, chronic opioid use, multiple providers, and overlapping prescriptions was abstracted.

RESULTS

A total of 164 articles met inclusion criteria. Any opioid use was the most commonly included measure, defined by 85 studies. This was followed by quantity of opioids (68 studies), chronic opioid use (53 studies), overlapping prescriptions (28 studies), and multiple providers (8 studies). Each measure contained multiple, distinct definitions with considerable variation in how each was operationalized.

CONCLUSIONS

Claims-based opioid utilization measures are commonly used in research, but definitions vary significantly from study to study. Researchers should carefully consider which opioid utilization measures and definitions are most appropriate for their study and recognize how different definitions may influence study results.

Prevalence of prescribed opioid claims among persons with nontraumatic spinal cord dysfunction in Ontario, Canada: a population-based retrospective cohort study

STUDY DESIGN

Cohort study.

OBJECTIVE

To determine the prevalence and to identify predictors of prescription opioid use among persons with nontraumatic spinal cord dysfunction within 1 year after discharge from inpatient rehabilitation.

SETTING

Ontario, Canada.

METHODS

We conducted a retrospective cohort study using administrative data to determine predictors of receiving prescription opioids during the 1 year after discharge from inpatient rehabilitation among persons with nontraumatic spinal cord dysfunction between April 1, 2004 and March 31, 2015. We modeled the outcome using a Poisson multivariable regression and reported relative risks with 95% confidence intervals.

RESULTS

We identified 3468 individuals with nontraumatic spinal cord dysfunction (50% male) with 67% who were aged ≥66. Over half of the cohort (60%) received opioids during the observation period. Older adults (≥66 years old) were significantly more likely to experience comorbidities (p < 0.05) but less likely to be dispensed opioids following rehabilitation discharge. Being female, previous opioid use before rehabilitation, experiencing lower continuity of care, increasing comorbidity level, low functional status, and having a previous diagnosis of osteoarthritis or mental illness were significant risk factors for receiving opioids after discharge, as shown in a multivariable analysis. Increasing length of rehabilitation stay and higher income were protective against opioid receipt after discharge.

CONCLUSION

Many individuals with nontraumatic spinal cord dysfunction in Ontario are prescribed opioids after discharge from inpatient rehabilitation. This may be problematic due to the number of severe complications that may arise from opioid use and their use in this population warrants future research.

Chronic Opioid Therapy: A Scoping Literature Review on Evolving Clinical and Scientific Definitions

The management of chronic noncancer pain (CNCP) with chronic opioid therapy (COT) is controversial. There is a lack of consensus on how COT is defined resulting in unclear clinical guidance. This scoping review identifies and evaluates evolving COT definitions throughout the published clinical and scientific literature. Databases searched included PubMed, Embase, and Web of Science. A total of 227 studies were identified from 8,866 studies published between January 2000 and July 2019. COT definitions were classified by pain population of application and specific dosage/duration definition parameters, with results reported according to PRISMA-ScR. Approximately half of studies defined COT as "days' supply duration >90 days" and 9.3% defined as ">120 days' supply," with other days' supply cut-off points (>30, >60, or >70) each appearing in <5% of total studies. COT was defined by number of prescriptions in 63 studies, with 16.3% and 11.0% using number of initiations or refills, respectively. Few studies explicitly distinguished acute treatment and COT. Episode duration/dosage criteria was used in 90 studies, with 7.5% by Morphine Milligram Equivalents + days' supply and 32.2% by other "episode" combination definitions. COT definitions were applied in musculoskeletal CNCP (60.8%) most often, and typically in adults aged 18 to 64 (69.6%). The usage of ">90 days' supply" COT definitions increased from 3.2 publications/year before 2016 to 20.7 publications/year after 2016. An increasing proportion of studies define COT as ">90 days' supply." The most recent literature trends toward shorter duration criteria, suggesting that contemporary COT definitions are increasingly conservative. PERSPECTIVE: This study summarized the most common, current definition criteria for chronic opioid therapy (COT) and recommends adoption of consistent definition criteria to be utilized in practice and research. The most recent literature trends toward shorter duration criteria overall, suggesting that COT definition criteria are increasingly stringent.

Variations in Long-term Opioid Therapy Definitions: A Systematic Review of Observational Studies Using Routinely Collected Data (2000-2019)

Routinely collected data have been increasingly used to assess long-term opioid therapy (LTOT) patterns, with very little guidance on how to measure LTOT from these data sources. We conducted a systematic review of studies published between January 2000 and July 2019 to catalogue LTOT definitions, the rationale for definitions and LTOT rates in observational research using routinely collected data in nonsurgical settings. We screened 4056 abstracts, 210 full-text manuscripts and included 128 studies, mostly from the United States (81%) and published between 2015 and 2019 (69%). We identified 78 definitions of LTOT, commonly operationalised as 90 days of use within a year (23%). Studies often used multiple criteria to derive definitions (60%), mostly based on measures of duration, such as supply days/days of use (66%), episode length (21%) or prescription fills within specified time periods (12%). Definitions were based on previous publications (63%), clinical judgment (16%) or empirical data (3%); 10% of studies applied more than one definition. LTOT definition was not provided with enough details for replication in 14 studies and 38 studies did not specify the opioids evaluated. Rates of LTOT within study populations ranged from 0.2% to 57% according to study design and definition used. We observed a substantial rise in the last 5 years in studies evaluating LTOT with large variability in the definitions used and poor reporting of the rationale and implementation of definitions. This variation impacts on research reproducibility, comparability of findings and the development of strategies aiming to curb therapy that is not guideline-recommended.

Virtual reality for the treatment of neuropathic pain in people with spinal cord injuries: A scoping review

Context: Virtual and augmented imagery are emerging technologies with potential to reduce the severity and impact of neuropathic pain in people with spinal cord injury (SCI).Objective: We aimed to identify and discuss studies using virtual and augmented reality applications for the management of neuropathic pain in people with spinal cord injury.Methods (data sources, data extraction): A systematic literature search was conducted using PRISMA scoping review guidelines. Articles were searched in PubMed, Embase and Web of Science databases using search terms relating to SCI, virtual and augmented reality and neuropathic pain. With no strong evidence for visual imagery in the treatment of pain in SCI patients, we selected exploratory, feasibility and more rigorous methodologies such as randomized controlled trials and case-control studies. We only selected studies evaluating the effects of visual imagery on neuropathic pain at or below the spinal cord injury level.Results: Of 60 articles located, we included nine articles involving 207 participants. All studies were exploratory using head-mounted devices or 3D and 2D screens with virtual walking or limb movement imagery. Outcomes included pain sensitivity, motor function and body ownership. Eight of the nine studies reported significant reductions in neuropathic pain intensity. However, given small sample sizes in all studies, results may be unreliable.Conclusion: Although the number of studies and individual sample sizes are small, these initial findings are promising. Given the limited options available for the effective treatment of neuropathic SCI pain and early evidence of efficacy, they provide valuable incentive for further research.

Opioid Use Among Individuals With Spinal Cord Injury: Prevalence Estimates Based on State Prescription Drug Monitoring Program Data

OBJECTIVE

To identify the prevalence of opioid use in individuals with chronic spinal cord injury (SCI) living in South Carolina.

DESIGN

Cohort study.

SETTING

Data from 2 statewide population-based databases, an SCI Registry and the state prescription drug monitoring program, were linked and analyzed.

PARTICIPANTS

The study included individuals (N=503) with chronic (>1y) SCI who were injured between 2013 and 2014 in South Carolina and who survived at least 3 years postinjury.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Filled opioid prescriptions over a 2-year period (months 13-36 after injury). The main outcomes were total number of days with an opioid prescription over the 2-year period, length of coverage period [(final day of prescription coverage+the days supplied)-first day of prescription coverage], average daily morphine milligram equivalents (MME) over the coverage period, and concurrent days covered by an opioid and a prescription for benzodiazepines, sedatives, or hypnotics.

RESULTS

A total of 53.5% of the cohort (269 individuals) filled at least 1 opioid prescription during their second or third year after SCI. In total, there were 3386 opioid fills during the 2-year study. On average, the total number of opioid prescription days was 293±367. The average coverage period was 389±290 days, and the average daily MME during the coverage period was 41±70 MME. Of those who filled an opioid prescription, 23% had high-risk fills (>50 MME), and 38% had concurrent prescriptions for benzodiazepines, sedatives, or hypnotics.

CONCLUSIONS

The prevalence of opioid use was high among individuals with chronic SCI, exceeding rates observed in the general population. Also concerning were the rates of high-risk fills, based on average daily MME and concurrent benzodiazepine, sedative, or hypnotic prescriptions. These findings, taken together with those of earlier studies, should be used by providers to assess and monitor opioid use, decrease concurrent high-risk medication use, and attenuate the risk of adverse outcomes.

Prevalence of Prescribed Opioid Claims Among Persons With Traumatic Spinal Cord Injury in Ontario, Canada: A Population-Based Retrospective Cohort Study

OBJECTIVES

To examine prescription opioid claims among individuals with traumatic spinal cord injury (SCI) and to identify factors associated with both chronic opioid and chronic high-dose opioid use.

DESIGN

Retrospective cohort study using population-level administrative data.

SETTING

Ontario, Canada.

PARTICIPANTS

Individuals (N=1842) with traumatic SCI between April 1, 2004 and March 31, 2015.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Proportion of cohort with chronic opioid use (≥90d supply) and proportion with chronic high-dose opioid use (≥90d supply exceeding 90 mg morphine equivalent) between April 1, 2016 and March 31, 2017 (observation period).

RESULTS

A total of 1842 individuals with traumatic SCI were identified (74% men), with a median age of 51 years (interquartile range [IQR], 34-64y) and median duration of injury of 6 years (IQR, 4-9y). During the observation period, 35% were dispensed at least 1 opioid and 19.8% received chronic opioids, 39% of whom received more than 90 mg daily (chronic high dose). The median daily morphine equivalent dose was 212 mg morphine equivalent (IQR, 135.5-345.3 mg) for chronic high-dose users. Significant risk factors for chronic opioid use were male sex; age between 40 and 60 years; lower income; multimorbidity; thoracic, lumbar, or sacral level of injury; and having a previous diagnosis of osteoarthritis. Risk factors for chronic high-dose opioid use were an extended time since injury, age between 40 and 50 years, and increasing comorbidity.

CONCLUSIONS

A large proportion of individuals with traumatic SCI were dispensed an opioid in a recent 1-year period. A substantial proportion were dispensed more than 90 mg of morphine equivalents, which is the maximum recommended by the Canadian opioid guideline. Further research is needed to understand the risk factors associated with chronic, high-dose opioid use in this population.

An exploration of attitudes and preferences towards medications among healthcare providers and persons with spinal cord injury/dysfunction: a qualitative comparison

PURPOSE

To compare the attitudes and preferences of persons with spinal cord injury/dysfunction (SCI/D) and healthcare providers regarding prescription medications, over-the-counter medications, and natural health products (NHPs).

MATERIALS AND METHODS

A qualitative study involving semi-structured interviews with healthcare providers (n = 32) and persons with SCI/D (n = 19) in Canada. Inductive descriptive and interpretive analyses were conducted using data display matrices and a constant comparative approach.

RESULTS

Participants described differing perceptions of therapeutic benefits based on medication type, with shared attitudes about the therapeutic benefits of prescription medications and differing views about the effectiveness of NHPs. Despite the perceived effectiveness of prescription medications, persons with SCI/D preferred to avoid them due to concerns about side effects, safety, and stigma. Persons with SCI/D were often concerned about the long-term safety of prescription medications, whereas providers focused more on medication-related addictions. Participants discussed stigma relating to prescription medications, NHPs, and medicinal marijuana.

CONCLUSION

Healthcare providers and persons with SCI/D described different attitudes about and preferences for pharmacotherapeutic products, contributing to challenges in optimizing medication management. Strategies to improve medication management include shared decision-making to incorporate patient preferences into care plans and explicit discussions about long-term medication safety. Further, steps are needed to combat the stigma associated with medication use.Implications for rehabilitationFollowing a person-centered approach to shared decision-making, prescribers should initiate explicit conversations about patient medication preferences, short and long-term prescription medication side effects, and alternative treatment options.Regarding prescription medication safety, persons with spinal cord injury/dysfunction focused on the long term impact of medications, while providers focused on medication-related addictions, highlighting a disconnect that should be discussed during initiation, continuation, or discontinuation of a medication.Providers should be mindful of the stigma associated with taking multiple prescription medications, including medicinal marijuana, as well as the stigma associated with over-the-counter medications and natural health products.Providers could benefit from education about spinal cord injury/dysfunction-specific prescription medications and could benefit from increased education about natural health products.

Management Strategies for Spinal Cord Injury Pain Updated for the Twenty-First Century

Traumatic spinal cord injury (SCI) often results in several life-altering impairments, including paralysis, sensory loss, and neurogenic bowel/bladder dysfunction. Some of these SCI-related conditions can be accommodated with compensatory strategies. Perhaps no SCI-associated condition is more troublesome and recalcitrant to the treating physiatrist than chronic neuropathic pain. In addition to the expected challenges in treating any chronic pain condition, treatment of SCI-related pain has the added difficulty of disruption of normal neural pathways that subserve pain transmission and attenuation. This article reviews selected treatment strategies for SCI-associated neuropathic pain.

Individuals with spinal cord injury have greater odds of substance use disorders than non-sci comparisons

BACKGROUND

Individuals with spinal cord injury (SCI) are disproportionately affected by numerous physical and behavioral health disparities, but the literature lacks a clear understanding of the association between SCI and substance use disorders. Identifying such behavioral health disparities in persons with disabilities is an increasingly central focus for public health researchers and represents a critical first step for prevention.

METHOD

The present study utilized a large database of deidentified electronic health records to examine the association between SCI and substance use disorders related to alcohol, cannabis, opioid, and nicotine. Examining data from patients 16 years or older who had patient encounters at the Penn State Hershey Medical Center from January 1, 1997 to April 30, 2018, the current study included data from 1,466,985 unique patients - 6192 of which held SCI diagnoses. Age-adjusted odds ratios were calculated using logistic regression.

RESULTS

Compared to non-SCI patients, individuals with SCI were at increased odds of having alcohol use disorder (OR: 4.19, 95% CI [3.67, 4.80]), cannabis use disorder (OR: 7.83, 95% CI [6.32, 9.69]), opioid use disorder (OR: 7.97, 95% CI [6.59, 9.66]), and nicotine use disorder (OR: 4.66, 95% CI [4.40, 4.94]). Patient sex did not moderate any of the four associations.

CONCLUSION

This study provides early indication that individuals with SCI may be disproportionately at-risk for substance use disorders and provides a foundation for future mechanistic and translational research. This evidence is a valuable step towards improving the health and quality of life for individuals with SCI.

Pulse article: opioid prescription for pain after spinal cord damage (SCD), differences from recommended guidelines, and a proposed algorithm for the use of opioids for pain after SCD

Study design

Online questionnaire of spinal cord injury (SCI) physicians.

Objectives

The objective of this study is to characterize the approach to opioid prescription for persons with spinal cord damage (SCD).

Setting

An international online questionnaire.

Methods

A survey was posted online and circulated among international societies within the field of SCI medicine from August to November 2018.

Results

One hundred and twenty-three physicians responded to the survey. Of these, 107 (92%) managed pain for persons with SCD. Most (82%) felt that opioid prescription was appropriate for uncontrolled acute pain, but fewer (67%) felt it was appropriate for chronic pain. Of those who felt opioids had a role in the treatment of neuropathic pain, 46% did not think there should be a specific upper limit of opioid dose. The majority (85%) would continue prescribing high doses (250 morphine milligram equivalent (MME) doses/day) if that dose were effective. Tramadol was the most common opioid prescribed first line.

Conclusion

Most physicians who responded to this survey prescribe opioids for intractable pain after SCD. A significant proportion of respondents believed that there should not be a specific upper limit of opioid dose prescribed if the drug is tolerated; this does not align with current recommendations. Most physicians do not feel influenced in their prescribing habits by regulatory bodies. If physicians decide to taper an opioid that is being tolerated well, it is most commonly related to a fear of the patient developing an opioid-use disorder. The authors propose an algorithm that may help align practice patterns with current recommended practice guidelines.

Opioids should not be prescribed for chronic pain after spinal cord injury

Most people with spinal cord injury (SCI) have chronic pain and effective treatments have not been identified. Within the first two decades of the 21st century, opioids have been commonly prescribed in an attempt to manage pain after SCI, however, the risks and absence of benefit of opioids have become more apparent as opioid crises have developed around the world. This perspective is an argument for why opioids should no longer be prescribed to treat chronic pain after SCI.