Screener And Opioid Assessment For Patients With Pain-Revised Research Articles

Diagnostic and Predictive Capacity of the Spanish Versions of the Opioid Risk Tool and the Screener and Opioid Assessment for Patients with Pain-Revised: A Preliminary Investigation in a Sample of People with Noncancer Chronic Pain.

IntroductionAccurate assessment of the risk of opioid abuse and misuse in people with noncancer chronic pain is crucial for their prevention. This study aimed to provide preliminary evidence of the diagnostic and predictive capacity of the Spanish versions of the Opioid Risk Tool (ORT) and the Screener and Opioid Assessment for Patients with Pain—Revised (SOAPP-R).MethodsWe used the Current Opioid Misuse Measure (COMM) as criterion measure to assess the capacity of each tool to identify patients misusing opioids at the time of the assessment. Eighteen months later, we used the COMM and the Drug Abuse Screening Test-10 (DAST-10) to assess their predictive capacity. In total, 147 people with noncancer chronic pain participated in the diagnostic study, and 42 in the predictive study.ResultsReceiver operating curve analysis showed that the SOAPP-R had an excellent capacity to identify participants who were misusing opioids at the time of assessment (area under the curve [AUC] = 0.827). The diagnostic capacity of the ORT was close to acceptable (AUC = 0.649–0.669), whereas its predictive capacity was poor (AUC = 0.522–0.554). The predictive capacity of the SOAPP-R was close to acceptable regarding misuse (AUC = 0.672) and poor regarding abuse (AUC = 0.423).ConclusionIn the setting of Spanish-speaking communities, clinicians should be cautious when using these instruments to make decisions on opioid administration. Further research is needed on the diagnostic and predictive capacity of the Spanish versions of both instruments.

Substance Abuse Risk and Medication Monitoring in Patients with Advanced Lung Cancer Receiving Palliative Care

Oncology and Palliative Medicine lack guidance on routine opioid risk screening and compliance monitoring. This study explored relationships among risk screening and aberrant medication related behaviors in patients with advanced lung cancer receiving embedded palliative care. This was a single center, prospective study and data was collected from December 2018 to March 2020. At the initial palliative visit, patients provided a baseline urine drug screen (UDS) test and completed the Screener and Opioid Assessment for Patients with Pain – Revised (SOAPP-R) self-assessment. Clinical pharmacists provided comprehensive review and interpretation of UDS results. Among 39 patients, 12 (30.8%) scored positive for risk of aberrant medication behaviors on the SOAPP-R. Only 34 of 39 patients provided a baseline UDS test and were included in further analysis. Prior to pharmacist review, 11/11 (100%) baseline UDS results in the positive-risk group and 13/23 (56.5%) in the negative-risk group appeared unexpected (p = 0.01). After pharmacist review, aberrant baseline UDS results were confirmed for 5/11 (45.5%) positive-risk and 4/23 (17.4%) negative-risk patients (p = 0.11). Overall, the SOAPP-R alone may be inadequate in this population and clinical pharmacists play an important role in comprehensive UDS result interpretation. Future studies are needed to validate this risk-screening tool in palliative cancer populations.

Pain Experiences and Their Relation to Opioid Misuse Risk and Emotion Dysregulation.

Pain is a complex, multidimensional experience but often is measured as a unidimensional experience. This study aimed to separately assess the sensory and affective components of pain and identify their relations to important pain-related outcomes, particularly in terms of opioid misuse risk and emotion dysregulation among patients with chronic pain receiving treatment in Appalachia. Two hundred and twelve patients presenting to a multidisciplinary pain center completed the Difficulties in Emotion Regulation Scale (DERS-18), Screener and Opioid Assessment for Patients with Pain—Revised (SOAPP-R), and short-form McGill Pain Questionnaire (SF-MPQ). The sensory experience of pain was unrelated to emotion dysregulation (r = 0.06, p = 0.57) and weakly related to opioid misuse risk (r = 0.182, p < 0.05). In contrast, the affective experience of pain was moderately related to emotion dysregulation (r = 0.217, p < 0.05) and strongly related to opioid misuse risk (r = 0.37, p < 0.01). In addition, emotion dysregulation predicted variance in opioid misuse risk above and beyond the affective and sensory experiences of pain ((b = 0.693, p < 0.001). The results suggest patients with a strong affective experience versus sensory experience of pain and challenges with emotion regulation may require a more comprehensive intervention to address these underlying components in order to reduce their risk of misusing opioid medications.

Validity of the screener and opioid assessment for patients with pain-revised (SOAPP-R) in patients with cancer

Objective: To determine the utility of the screener and opioid assessment for patients with pain-revised (SOAPP-R) for patients with cancer-related pain. Design: The authors performed a retrospective analysis of cancer patients screened with the SOAPP-R. Opiate abuse was determined using a combination of urine drug screens and analysis of patients’ electronic medical records.Setting/Patients: Patients who were seen at a palliative care clinic presenting with pain or needing an opioid prescription at an academic medical center with any type of cancer were screened using the SOAPP-R (N = 69).Outcome measures: Aberrant opioid-related behavior was determined using a combination of provider notes and urine drug screens.Results: A positive SOAPP-R score (≥18) was observed in 27 participants (39.1 percent). The sensitivity and specificity of the SOAPP-R in the study population was 0.75 and 0.80, respectively.Conclusions: The SOAPP-R, in its current form, may have value in screening patients with cancer for substance abuse. Incorporation of the screening tool in palliative and oncology settings may help reduce opioid abuse in cancer patients.

Validity of the screener and opioid assessment for patients with pain-revised (SOAPP-R) in patients with cancer.

To determine the utility of the screener and opioid assessment for patients with pain-revised (SOAPP-R) for patients with cancer-related pain. The authors performed a retrospective analysis of cancer patients screened with the SOAPP-R. Opiate abuse was determined using a combination of urine drug screens and analysis of patients' electronic medical records. Patients who were seen at a palliative care clinic presenting with pain or needing an opioid prescription at an academic medical center with any type of cancer were screened using the SOAPP-R (N = 69). Aberrant opioid-related behavior was determined using a combination of provider notes and urine drug screens. A positive SOAPP-R score (⩾18) was observed in 27 participants (39.1 percent). The sensitivity and specificity of the SOAPP-R in the study population was 0.75 and 0.80, respectively. The SOAPP-R, in its current form, may have value in screening patients with cancer for substance abuse. Incorporation of the screening tool in palliative and oncology settings may help reduce opioid abuse in cancer patients.

The World Health Organization Disability Assessment Schedule-2.0 (WHODAS 2.0) in a chronic pain population being considered for chronic opioid therapy.

PurposeTo examine the validity of the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) for the assessment of function in a community-based sample of patients with chronic pain conditions undergoing evaluation for chronic opioid therapy.Patients and methodsOne hundred nine of 124 patients were evaluated for a chronic opioid therapy program between December 1, 2014 and April 10, 2015, inclusive, at one community-based interdisciplinary pain management practice. Measures included: demographic data; the WHODAS 2.0; a modified version of the Roland Morris Disability Questionnaire (RMDQ-m); the Patient Health Questionnaire-9 item (PHQ-9); the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R); the Current Opioid Misuse Measure (COMM), the Opioid Risk Tool (ORT); opioid dose. These data were collected as part of routine care, and this retrospective chart review study examined the data from this convenience sample, comparing the results of each assessment tool to the results of the WHODAS 2.0.ResultsMedian score on the WHODAS 2.0 was 25.69 (IQR=16.01 to 35.28). WHODAS 2.0 score was significantly correlated with the RMDQ-m (rs=0.69, p<0.001), the PHQ-9 (rs=0.68, p<0.001), the COMM (rs=0.52, p<0.001) and the SOAPP-R (rs=0.51, p<0.001). There was no significant correlation between the WHODAS 2.0 and the ORT (rs=0.14, p=0.12) or opioid dose (rs=0.07, p=0.47).ConclusionsThe WHODAS 2.0 was significantly positively correlated with other measures, including measures of disability, risk of opioid misuse, and depression among patients being evaluated for chronic opioid therapy. The WHODAS 2.0 may be a useful measure of disability across a number of important domains when discussing expectations of both patients and providers at initiation of opioid therapy for chronic pain management. This assessment and discussion is crucial, particularly given the focus on function, rather than analgesia alone, when evaluating the effectiveness of opioid treatment.

A Comparison of Short Forms of the Screener and Opioid Assessment for Patients With Pain – Revised (SOAPP-R)

Abstract. The Screener and Opioid Assessment for Patients with Pain – Revised (SOAPP-R) is a 24-item self-report questionnaire that assesses risk of aberrant medication-related behavior among chronic pain patients. Recently, an 8-item version of the SOAPP-R that weights items differentially was proposed. However, no previous study had compared the 8-item form with other short versions of the SOAPP-R, including a static 12-item short form and computer-based versions customizing the test length to the individual respondent. Moreover, no prior research had investigated combining the 8-item short form with customized computer-based stopping rules to further enhance efficiency. The objectives of this study were to compare the 8-item version with previously recommended short forms of the SOAPP-R, and to develop and evaluate a new version of the SOAPP-R combining the 8-item version with computer-based stopping rules. Versions were compared via sensitivity, specificity, and mean test length using real-data simulation of three datasets. Although results varied across datasets, the 8-item SOAPP-R compared favorably to previously recommended forms. Combining the 8-item form with computer-based stopping rules reduced the mean test length without affecting sensitivity or specificity; thus, the combined approach is recommended. The methodology used to shorten questionnaires via computer-based testing can also be applied to other instruments.

Computer‐based testing and the 12‐item Screener and Opioid Assessment for Patients with Pain‐Revised: A combined approach to improving efficiency

AbstractObjectives were to combine computer‐based stopping rules with the 12‐item form of the Screener and Opioid Assessment for Patients with Pain‐Revised (SOAPP‐R), and to compare this combined procedure with the full‐length (24‐item) SOAPP‐R, the computer‐based stopping rules alone, and the 12‐item short form alone. Three datasets were analyzed, including data from 428 subjects from the initial or cross‐validation studies of the SOAPP‐R; 84 patients from a pain center; and 110 primary care patients. Subjects completed the full‐length SOAPP‐R and were assessed for aberrant medication‐related behaviors. A real‐data simulation was conducted to determine the screening characteristics and mean test length of each version of the SOAPP‐R. One procedure combining stochastic curtailment with the 12‐item short form reduced the mean length by 37% to 42% compared to the short form alone; by 42% to 45% compared to stochastic curtailment alone; and by 68% to 71% compared to the full‐length form. The combined procedure had lower mean test lengths, and equal screening characteristics, compared to a procedure coupling curtailment with the 12‐item short form. A procedure combining computer‐based stopping rules with the 12‐item short form of the SOAPP‐R has potential to enhance the efficiency of the screener.

Difficulties in emotion regulation and chronic pain-related disability and opioid misuse

Risk for opioid misuse is a crucial consideration for patients with chronic pain, given the recent high rates of opioid-related deaths in the U.S. Emotion regulation difficulties may be associated with chronic pain outcomes such as opioid misuse, but may also be amenable to intervention. The aim of this study was to examine associations between difficulties with emotion regulation and disability and risk for opioid misuse among Appalachian chronic pain patients. The Difficulties in Emotion Regulation scale (DERS-18), Pain Disability Index (PDI), Screener and Opioid Assessment for Patients with Pain – Revised (SOAPP-R), and Current Opioid Misuse Measure (COMM) were collected from 149 patients (age 25–80, 59% female) presenting to a behavioral medicine department for evaluation. The extent to which DERS-18 scores predict risk for opioid misuse and disability was examined via hierarchical regression, logistic regression, and receiver operating characteristic (ROC) curve analyses. DERS-18 scores account for 45% of variance in SOAPP-R, 36% in COMM scores, and 11% in PDI scores. A one-point increase in DERS-18 score is associated with 19% greater odds of being at risk for misuse as measured by the SOAPP-R, and 16% greater odds on the COMM. In ROC analyses, the DERS-18 is a good predictor of risk on the SOAPP-R (AUC = .85) and COMM (.83), with cut-off scores in the mid-30s exhibiting good sensitivity and specificity. Difficulties in emotion regulation are associated with poorer functioning and with greater risk of opioid misuse in this population, but may be amenable to intervention.

Chronic opioid therapy issues associated with opioid abuse potential

Chronic opioid therapy continues to be an important "mainstream" option for the relief of pain, despite continued debate over the efficacy and safety of utilizing opioids with chronic noncancer populations. With this increase in utilization for medical purposes, the authors have also experienced a troubling rise in the abuse and diversion of prescription opioids. Providers should note this relationship and always perform due diligence when assessing whether a patient with chronic noncancer pain is an appropriate candidate for opioid therapy based on potential risk factors. Because of the relative shortage of board-certified pain practitioners in the United States, much of the practice of pain management falls on primary care providers, who might feel uncomfortable or overwhelmed when facing these issues. To this end, a set of guidelines are discussed to promote an approach to chronic noncancer pain utilizing "universal precautions" principles. In addition, several risk tools are evaluated, including the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R), the Opioid Risk Tool (ORT), and the Pain Assessment and Documentation Tool (PADT). Finally, discussion is presented regarding what practices seen in opioid prescribing can be considered "in-or-out" of the mainstream box.

Development and Validation of an Eight-Item Brief Form of the SOAPP-R (SOAPP-8).

Although the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R) has become a widely used screener for aberrant opioid-related behavior in adults, the length of the instrument may limit its utility. The purpose of the current study was to develop a short form of the SOAPP-R by retaining as few items as possible while maximizing predictive accuracy. Participants (N = 555), recruited from pain clinics, completed the 24-item SOAPP-R and participated in a five-month follow-up visit to evaluate aberrant drug-related behaviors. Opioid aberrant-related behavior was determined through self-report, physician report, and urine toxicology screen. The optimal subset of SOAPP-R items to predict aberrant opioid-related behavior was identified empirically by employing the LASSO selection method and the leave-one-out cross-validation (LOOCV) method offered in the GLMSELECT procedure in SAS 9.4 in conjunction with content expertise. Eight items were identified before the selection method stopped. The receiver operating characteristic curve generated from the predicted probabilities from the model produced an area under the curve (AUC) value greater than the AUC value produced by the 24-item SOAPP-R total score and yielded a sensitivity of 0.74 and a specificity of 0.66. These results provide strong preliminary support for the SOAPP-8 as a brief screening tool of aberrant opioid-related behavior in chronic pain patients.

To take or not to take: the association between perceived addiction risk, expected analgesic response and likelihood of trying novel pain relievers in self-identified chronic pain patients.

Probability discounting refers to the effect of outcome uncertainty on decision making. Using probability discounting, we examined the degree to which self-identified chronic pain patients (CPP) were likely to try a novel analgesic medication given increasing addiction risk. We postulated that propensity for opioid misuse, trait impulsivity and previous opioid experience would be associated positively with likelihood of risky medication use. This cross-sectional on-line study determined state/trait associations with addiction-related medication decisions in CPP. US-based CPP participated via Amazon Mechanical Turk; data were collected and analyzed in Baltimore, Maryland. A total of 263 CPP (70.6% female) participated in the study from 12-13 December 2014. CPP responded to the Benefit versus Addiction Risk Questionnaire (BARQ) assessing likelihood of taking a hypothetical once-daily oral analgesic medication as a function of two factors: risk of addiction (0-50%) and duration of expected complete pain relief (3, 30 or 365days). The primary outcome was the BARQ, quantified as area under the curve (AUC). Grouping of CPP at high or low risk for opioid misuse was based on the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R). Predictors included previous experience with opioids, as well as various measures of chronic pain and mental health. Across hypothetical addiction risk assessed in the BARQ, the likelihood of taking a novel analgesic medication was elevated significantly in patients with high (≥18; n=137) versus low (<18; n=126) SOAPP-R scores [P<0.001; 3-day: Cohen's d=0.66, 95% confidence interval (CI)=0.63, 0.69; 30-day: d=0.74, 95% CI=0.71, 0.78; 365-day: d=0.75, 95% CI=0.72, 0.79]. In the United States, self-identified chronic pain patients (CPP) at higher risk for opioid misuse were more likely to report willingness to try a novel analgesic despite increasing addiction risk than CPP with low risk of opioid misuse.

Cross-validation of short forms of the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R)

BackgroundThe Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R) is a 24-item assessment designed to assist in the prediction of aberrant drug-related behavior (ADB) among patients with chronic pain. Recent work has created shorter versions of the SOAPP-R, including a static 12-item short form and two computer-based methods (curtailment and stochastic curtailment) that monitor assessments in progress. The purpose of this study was to cross-validate these shorter versions in two new populations. MethodsThis retrospective study used data from patients recruited from a hospital-based pain center (n=84) and pain patients followed and treated at primary care centers (n=110). Subjects had been administered the SOAPP-R and assessed for ADB. In real-data simulation, the sensitivity, specificity, and area under the curve (AUC) of each form were calculated, as was the mean test length using curtailment and stochastic curtailment. ResultsCurtailment reduced the number of items administered by 30% to 34% while maintaining sensitivity and specificity identical to those of the full-length SOAPP-R. Stochastic curtailment reduced the number of items administered by 45% to 63% while maintaining sensitivity and specificity within 0.03 of those of the full-length SOAPP-R. The AUC of the 12-item form was equal to that of the 24-item form in both populations. ConclusionsCurtailment, stochastic curtailment, and the 12-item short form have potential to enhance the efficiency of the SOAPP-R.

An investigation of completion times on the Screener and Opioid Assessment for Patients with Pain - revised (SOAPP-R).

BackgroundRespondents’ scores to the Screener and Opioid Assessment for Patients with Pain – revised (SOAPP-R) have been shown to be predictive of aberrant drug-related behavior (ADB). However, research is lacking on whether an individual’s completion time (the amount of time that he/she takes to finish the screener) has utility in predicting ADB, despite the fact that response speed has been useful in predicting behavior in other fields. The purpose of this study was to evaluate the degree to which SOAPP-R completion time is predictive of ADB.Materials and methodsThis retrospective study analyzed completion-time data from 82 adult emergency department patients who completed the SOAPP-R on a tablet computer. The utility of SOAPP-R completion times in predicting ADB was assessed via logistic regression and the area under the curve (AUC) statistic. An external measure of ADB using Prescription Drug Monitoring Program data defined ADB to have occurred in individuals with at least four opioid prescriptions and at least four prescribers in 12 months.ResultsAlthough there was a slight trend for individuals with greater completion times to have greater odds of ADB (odds ratio 1.004 in simple logistic regression), the association between SOAPP-R completion time and ADB was not statistically significant in either simple logistic regression (P=0.307) or multiple logistic regression adjusting for SOAPP-R score (P=0.419). AUC values for the prediction of ADB using completion time alone, SOAPP-R score alone, and both completion time and SOAPP-R score were 0.63, 0.64, and 0.65, respectively.ConclusionThere was no significant evidence that SOAPP-R completion times were predictive of ADB among emergency department patients. However, the AUC value for completion times was only slightly less than that for SOAPP-R total scores.

Development of Short-Form Versions of the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R): A Proof-of-Principle Study.

The Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R) is a 24-item questionnaire designed to assess risk of aberrant medication-related behaviors in chronic pain patients. The introduction of short forms of the SOAPP-R may save time and increase utilization by practitioners. To develop and evaluate candidate SOAPP-R short forms. Retrospective study. Pain centers. Four hundred and twenty-eight patients with chronic noncancer pain. Subjects had previously been administered the full-length version of the SOAPP-R and been categorized as positive or negative for aberrant medication-related behaviors via the Aberrant Drug Behavior Index (ADBI). Short forms of the SOAPP-R were developed using lasso logistic regression. Sensitivity, specificity, and area under the curve (AUC) of all forms were calculated with respect to the ADBI using the complete data set, training-test analysis, and 10-fold cross-validation. The coefficient alpha of each form was also calculated. An external set of 12 pain practitioners reviewed the forms for content. In the complete data set analysis, a form of 12 items exhibited sensitivity, specificity, and AUC greater than or equal to those of the full-length SOAPP-R (which were 0.74, 0.67, and 0.76, respectively). The short form had a coefficient alpha of 0.76. In the training-test analysis and 10-fold cross-validation, it exhibited an AUC value within 0.01 of that of the full-length SOAPP-R. The majority of external practitioners reported a preference for this short form. The 12-item version of the SOAPP-R has potential as a short risk screener and should be tested prospectively.

(196) A proof of concept for short forms of the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R)

(196) A proof of concept for short forms of the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R)

Risk for Opioid Misuse Among Emergency Department Cancer Patients

One of the most challenging areas of emergency medicine practice is the management and treatment of severe and persistent pain, including cancer-related pain. Emergency departments (EDs) in the United States frequently provide care for patients with cancer and an increasing concern is the potential for opioid misuse in this patient group. The authors determined the risk for opioid misuse among ED cancer patients with pain and assessed demographic and clinical factors associated with increased misuse risk. The Texas state prescription monitoring program was also queried for evidence of multiple opioid prescriptions for comparing low- and high-risk groups. The Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R) was administered to assess risk for opioid misuse among cancer patients presenting to the ED of a comprehensive cancer center in the United States. Eligibility criteria included: 1) presentation for treatment of chronic cancer-related pain while taking a prescribed schedule II opioid for analgesia, 2) age of 18 years or older, 3) ability to speak English, and 4) ability to understand the study and give written informed consent. Of 934 ED patients screened for the study, 290 were eligible and 209 participated (72% response rate). On the basis of the recommended SOAPP-R cutoff score of 18, a total of 71 of the 209 patients (34%) were categorized as having a high risk of misuse. Of note, 15% and 4% of all patients reported past or current use of illicit substances, respectively. The total number of annual opioid prescriptions (17.8 vs. 12.6; p = 0.023) differed between the high- versus low-risk groups. Multivariable analyses showed that depression (odds ratio [OR] = 3.06, 95% confidence interval [CI] = 1.45 to 6.48; p = 0.003), poor coping (OR = 1.08, 95% CI = 1.03 to 1.13; p = 0.001), and illicit substance use (OR = 28.30, 95% CI = 2.97 to 269.24; p = 0.029) were significantly associated with high risk of opioid misuse. The risk of opioid misuse among cancer patients is substantial. Screening for opioid misuse in the ED is feasible.

Factors Associated with Opioid Use in a Cohort of Patients Presenting for Surgery.

Objectives. Patients taking opioids prior to surgery experience prolonged postoperative opioid use, worse clinical outcomes, increased pain, and more postoperative complications. We aimed to compare preoperative opioid users to their opioid naïve counterparts to identify differences in baseline characteristics. Methods. 107 patients presenting for thoracotomy, total knee replacement, total hip replacement, radical mastectomy, and lumpectomy were investigated in a cross-sectional study to characterize the associations between measures of pain, substance use, abuse, addiction, sleep, and psychological measures (depressive symptoms, Posttraumatic Stress Disorder symptoms, somatic fear and anxiety, and fear of pain) with opioid use. Results. Every 9-point increase in the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R) score was associated with 2.37 (95% CI 1.29–4.32) increased odds of preoperative opioid use (p = 0.0005). The SOAPP-R score was also associated with 3.02 (95% CI 1.36–6.70) increased odds of illicit preoperative opioid use (p = 0.007). Also, every 4-point increase in baseline pain at the future surgical site was associated with 2.85 (95% CI 1.12–7.27) increased odds of legitimate preoperative opioid use (p = 0.03). Discussion. Patients presenting with preoperative opioid use have higher SOAPP-R scores potentially indicating an increased risk for opioid misuse after surgery. In addition, legitimate preoperative opioid use is associated with preexisting pain.

The Contribution of Differential Opioid Responsiveness to Identification of Opioid Risk in Chronic Pain Patients

The Screener and Opioid Assessment for Patients with Pain–Revised (SOAPP-R) predicts increased risk of opioid misuse in chronic pain patients. We evaluated whether higher SOAPP-R scores are associated with greater opioid reinforcing properties, potentially contributing to their predictive utility. Across 2 counterbalanced laboratory sessions, 55 chronic low back pain sufferers completed the SOAPP-R at baseline and measures of back pain intensity, evoked pain responsiveness (thermal, ischemic), and subjective opioid effects after receiving intravenous morphine (.08 mg/kg) or saline placebo. Morphine effect measures were derived for all outcomes, reflecting the difference between morphine and placebo condition values. Higher SOAPP-R scores were significantly associated with greater desire to take morphine again, less feeling down and feeling bad, and greater reductions in sensory low back pain intensity following morphine administration. This latter effect was due primarily to SOAPP-R content assessing medication-specific attitudes and behavior. Individuals exceeding the clinical cutoff (18 or higher) on the SOAPP-R exhibited significantly greater morphine liking, desire to take morphine again, and feeling sedated; less feeling bad; and greater reductions in sensory low back pain following morphine. The SOAPP-R may predict elevated opioid risk in part by tapping into individual differences in opioid reinforcing effects. PerspectiveBased on placebo-controlled morphine responses, associations were observed between higher scores on a common opioid risk screener (SOAPP-R) and greater desire to take morphine again, fewer negative subjective morphine effects, and greater analgesia. Opioids may provide the best analgesia in those patients at greatest risk of opioid misuse.

(185) Reducing the respondent burden of the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R): an approach using curtailment and stochastic curtailment

(185) Reducing the respondent burden of the Screener and Opioid Assessment for Patients with Pain-Revised (SOAPP-R): an approach using curtailment and stochastic curtailment