Publications

2024

Samayamuthu, Malarkodi J, Olga Kravchenko, Wei-Hsuan Lo-Ciganic, Eugene M Sadhu, Seonkyeong Yang, Shyam Visweswaran, and Vanathi Gopalakrishnan. (2024) 2024. “Trends in Postpartum Hemorrhage Prevalence and Comorbidity Burden: Insights from the ENACT Network Aggregated Electronic Health Record Data.”. Research Square. https://doi.org/10.21203/rs.3.rs-5041092/v1.

The goal of this study was to assess trends in postpartum hemorrhage (PPH), its risk factors, and maternal comorbidity burden in the United States using aggregate data from the Evolve to Next-Gen Accrual to Clinical Trials (ENACT) network. This federated network employs interactive querying of electronic health record data repositories in academic medical centers nationwide. We conducted repeated annual cross-sectional analyses to evaluate PPH occurrence and comorbidities across various ethnoracial and sociodemographic groups, starting with a large cohort of 1,287,675 unique delivery hospitalizations collected from 22 ENACT sites between 2005 and 2022. During this time, there was a statistically significant increasing trend in the prevalence of PPH, rising from 5,634 to 10,504 PPH per 100,000 deliveries (P trend <0.001). Our findings revealed a continuous upward trend in PPH rates that remained consistent among women with ≥ 1 comorbid conditions (P trend <0.001) and those with ≥ 1 maternal risk factor (P trend <0.001). This result aligns with prior studies and extends beyond the time periods previously reported. Overall, Native Hawaiian or Other Pacific Islander women had the highest PPH prevalence (  13%), followed by Asian (9.8%), American Indian or Alaska Native (8.9%), multirace (8.6%), Black or African American (8.4%) and White (7.4%) women. The top PPH risk factor identified was placenta previa or accreta, while the top comorbidity was antepartum hemorrhage / placental abruption. The most common cause of PPH, namely uterine atony, was prevalent in ENACT data. Our analysis highlights significant ethnoracial disparities and underscores the need for targeted preventative interventions.

Bell, Sigall K, Maelys J Amat, Timothy S Anderson, Mark D Aronson, James C Benneyan, Leonor Fernandez, Dru A Ricci, et al. (2024) 2024. “Do Patients Who Read Visit Notes on the Patient Portal Have a Higher Rate of ‘loop Closure’ on Diagnostic Tests and Referrals in Primary Care? A Retrospective Cohort Study.”. Journal of the American Medical Informatics Association : JAMIA 31 (3): 622-30. https://doi.org/10.1093/jamia/ocad250.

OBJECTIVES: The 2021 US Cures Act may engage patients to help reduce diagnostic errors/delays. We examined the relationship between patient portal registration with/without note reading and test/referral completion in primary care.

MATERIALS AND METHODS: Retrospective cohort study of patients with visits from January 1, 2018 to December 31, 2021, and order for (1) colonoscopy, (2) dermatology referral for concerning lesions, or (3) cardiac stress test at 2 academic primary care clinics. We examined differences in timely completion ("loop closure") of tests/referrals for (1) patients who used the portal and read ≥1 note (Portal + Notes); (2) those with a portal account but who did not read notes (Portal Account Only); and (3) those who did not register for the portal (No Portal). We estimated the predictive probability of loop closure in each group after adjusting for socio-demographic and clinical factors using multivariable logistic regression.

RESULTS: Among 12 849 tests/referrals, loop closure was more common among Portal+Note-readers compared to their counterparts for all tests/referrals (54.2% No Portal, 57.4% Portal Account Only, 61.6% Portal+Notes, P < .001). In adjusted analysis, compared to the No Portal group, the odds of loop closure were significantly higher for Portal Account Only (OR 1.2; 95% CI, 1.1-1.4), and Portal+Notes (OR 1.4; 95% CI, 1.3-1.6) groups. Beyond portal registration, note reading was independently associated with loop closure (P = .002).

DISCUSSION AND CONCLUSION: Compared to no portal registration, the odds of loop closure were 20% higher in tests/referrals for patients with a portal account, and 40% higher in tests/referrals for note readers, after controlling for sociodemographic and clinical factors. However, important safety gaps from unclosed loops remain, requiring additional engagement strategies.

Anderson, Timothy S, Brianna X Wang, Julia H Lindenberg, Shoshana J Herzig, Dylan M Berens, and Mara A Schonberg. (2024) 2024. “Older Adult and Primary Care Practitioner Perspectives on Using, Prescribing, and Deprescribing Opioids for Chronic Pain.”. JAMA Network Open 7 (3): e241342. https://doi.org/10.1001/jamanetworkopen.2024.1342.

IMPORTANCE: Guidelines recommend deprescribing opioids in older adults due to risk of adverse effects, yet little is known about patient-clinician opioid deprescribing conversations.

OBJECTIVE: To understand the experiences of older adults and primary care practitioners (PCPs) with using opioids for chronic pain and discussing opioid deprescribing.

DESIGN, SETTING, AND PARTICIPANTS: This qualitative study conducted semistructured individual qualitative interviews with 18 PCPs and 29 adults 65 years or older prescribed opioids between September 15, 2022, and April 26, 2023, at a Boston-based academic medical center. The PCPs were asked about their experiences prescribing and deprescribing opioids to older adults. Patients were asked about their experiences using and discussing opioid medications with PCPs.

MAIN OUTCOME AND MEASURES: Shared and conflicting themes between patients and PCPs regarding perceptions of opioid prescribing and barriers to deprescribing.

RESULTS: In total, 18 PCPs (12 [67%] younger that 50 years; 10 [56%] female; and 14 [78%] based at an academic practice) and 29 patients (mean [SD] age, 72 [5] years; 19 [66%] female) participated. Participants conveyed that conversations between PCPs and patients on opioid use for chronic pain were typically challenging and that conversations regarding opioid risks and deprescribing were uncommon. Three common themes related to experiences with opioids for chronic pain emerged in both patient and PCP interviews: opioids were used as a last resort, opioids were used to improve function and quality of life, and trust was vital in a clinician-patient relationship. Patients and PCPs expressed conflicting views on risks of opioids, with patients focusing on addiction and PCPs focusing on adverse drug events. Both groups felt deprescribing conversations were often unsuccessful but had conflicting views on barriers to successful conversations. Patients felt deprescribing was often unnecessary unless an adverse event occurred, and many patients had prior negative experiences tapering. The PCPs described gaps in knowledge on how to taper, a lack of clinical access to monitor patients during tapering, and concerns about patient resistance.

CONCLUSIONS AND RELEVANCE: In this qualitative study, PCPs and older adults receiving long-term opioid therapy viewed the use of opioids as a beneficial last resort for treating chronic pain but expressed dissonant views on the risks associated with opioids, which made deprescribing conversations challenging. Interventions, such as conversation aids, are needed to support collaborative discussion about deprescribing opioids.

Politzer, Eran, Timothy S Anderson, John Z Ayanian, Vilsa Curto, John A Graves, Laura A Hatfield, Jeffrey Souza, Alan M Zaslavsky, and Bruce E Landon. (2024) 2024. “Primary Care Physicians In Medicare Advantage Were Less Costly, Provided Similar Quality Versus Regional Average.”. Health Affairs (Project Hope) 43 (3): 372-80. https://doi.org/10.1377/hlthaff.2023.00803.

The use of many services is lower in Medicare Advantage (MA) compared with traditional Medicare, generating cost savings for insurers, whereas the quality of ambulatory services is higher. This study examined the role of selective contracting with providers in achieving these outcomes, focusing on primary care physicians. Assessing primary care physician costliness based on the gap between observed and predicted costs for their traditional Medicare patients, we found that the average primary care physician in MA networks was $433 less costly per patient (2.9 percent of baseline) compared with the regional mean, with less costly primary care physicians included in more networks than more costly ones. Favorable selection of patients by MA primary care physicians contributed partially to this result. The quality measures of MA primary care physicians were similar to the regional mean. In contrast, primary care physicians excluded from all MA networks were $1,617 (13.8 percent) costlier than the regional mean, with lower quality. Primary care physicians in narrow networks were $212 (1.4 percent) less costly than those in wide networks, but their quality was slightly lower. These findings highlight the potential role of selective contracting in reducing costs in the MA program.

Amat, Maelys J, Timothy S Anderson, Umber Shafiq, Scot B Sternberg, Talya Salant, Leonor Fernandez, Gordon D Schiff, et al. (2024) 2024. “Low Rate of Completion of Recommended Tests and Referrals in an Academic Primary Care Practice With Resident Trainees.”. Joint Commission Journal on Quality and Patient Safety 50 (3): 177-84. https://doi.org/10.1016/j.jcjq.2023.10.005.

BACKGROUND: A frequent, preventable cause of diagnostic errors involves failure to follow up on diagnostic tests, referrals, and symptoms-termed "failure to close the diagnostic loop." This is particularly challenging in a resident practice where one third of physicians graduate annually, and rates of patient loss due to these transitions may lead to more opportunities for failure to close diagnostic loops. The aim of this study was to determine the prevalence of failure of loop closure in a resident primary care clinic compared to rates in the faculty practice and identify factors contributing to failure.

METHODS: This retrospective cohort study included all patient visits from January 1, 2018, to December 31, 2021, at two academic medical center-based primary care practices where residents and faculty practice in the same setting. The primary outcome was prevalence of failure to close the loop for (1) dermatology referrals, (2) colonoscopy, and (3) cardiac stress testing. The primary predictor was resident vs. faculty status of the ordering provider. The authors present an unadjusted analysis and the results of a multivariable logistic regression analysis incorporating all patient factors to determine their association with loop closure.

RESULTS: Of 12,282 orders for referrals and tests for the three studied areas, 1,929 (15.7%) were ordered by a resident physician. Of resident orders for all three tests, 52.9% were completed within the designated time vs. 58.4% for orders placed by attending physicians (p < 0.01). In an unadjusted analysis by test type, a similar trend was seen for colonoscopy (51.4% completion rate for residents vs. 57.5% for attending physicians, p < 0.01) and for cardiac stress testing (55.7% completion rate for residents vs. 61.2% for attending physicians), though a difference was not seen for dermatology referrals (64.2% completion rate for residents vs. 63.7% for attending physicians). In an adjusted analysis, patients with resident orders were less likely than attendings to close the loop for all test types combined (odds ratio 0.88, 95% confidence interval 0.79-0.98), with low rates of test completion for both physician groups.

CONCLUSION: Loop closure for three diagnostic interventions was low for patients in both faculty and resident primary care clinics, with lower loop closure rates in resident clinics. Failure to close diagnostic loops presents a safety challenge in primary care and is of particular concern for training programs.

Chae, Sulgi, Emma Lee, Julia Lindenberg, Kaden Shen, and Timothy S Anderson. (2024) 2024. “Evaluation of a Benzodiazepine Deprescribing Quality Improvement Initiative for Older Adults in Primary Care.”. Journal of the American Geriatrics Society 72 (4): 1234-41. https://doi.org/10.1111/jgs.18728.

BACKGROUND: Older adults are commonly prescribed long-term benzodiazepines for anxiety and insomnia despite evidence of risks and limited evidence of long-term benefits. Recent quality measures and guidelines have recommended benzodiazepine deprescribing, yet there is little real-world data on clinic-based deprescribing programs.

METHODS: We developed a benzodiazepine deprescribing quality improvement program for older adults at a large US academic medical center. The program targeted adults aged 65 years and older who were prescribed chronic benzodiazepines by their primary care physician (PCP). PCPs were contacted to opt-out patients not suitable for deprescribing; then eligible patients were mailed a letter discussing patient-specific risks and advising them to discuss deprescribing with their PCP or a pharmacist who was available to support tapering. The primary outcomes were the number of patients who discussed deprescribing and who initiated a taper within 90 days of outreach.

RESULTS: Of 504 older adults prescribed benzodiazepines, 133 (26%) were opted out by their PCPs leaving a cohort of 371 (median age 71 years [IQR 68-75], 58% female, 82% White). The median daily diazepam milligram equivalent was 5 mg (IQR 3-6 mg) and 30% were prescribed long-acting benzodiazepines. Three months following patient outreach, 97 patients (26%) had a documented discussion of benzodiazepines with their PCP or clinic pharmacist. Of these patients, 35 (36%) had documentation of a deprescribing discussion and 25 (26%) initiated a taper. At 12 months, 16 patients (64%) were tapered successfully, with nine (36%) patients taking a lower benzodiazepine dose and seven (28%) discontinuing benzodiazepines completely.

CONCLUSIONS: A low-intensity benzodiazepine deprescribing outreach program led to deprescribing conversations for a minority of patients, but one-quarter of older adults who engaged in a conversation chose to taper and nearly two-thirds sustained reduced use. Incorporating benzodiazepine deprescribing into routine care may require more intensive population-health efforts to engage patients and clinicians.

Bernstein, Eden Y, Travis P Baggett, Shrunjal Trivedi, Shoshana J Herzig, and Timothy S Anderson. (2024) 2024. “Outcomes After Initiation of Medications for Alcohol Use Disorder at Hospital Discharge.”. JAMA Network Open 7 (3): e243387. https://doi.org/10.1001/jamanetworkopen.2024.3387.

IMPORTANCE: US Food and Drug Administration-approved medications for alcohol use disorder (MAUD) are significantly underused. Hospitalizations may provide an unmet opportunity to initiate MAUD, but few studies have examined clinical outcomes of patients who initiate these medications at hospital discharge.

OBJECTIVE: To investigate the association between discharge MAUD initiation and 30-day posthospitalization outcomes.

DESIGN, SETTING, AND PARTICIPANTS: This cohort study was conducted among patients with Medicare Part D who had alcohol-related hospitalizations in 2016. Data were analyzed from October 2022 to December 2023.

EXPOSURES: Discharge MAUD initiation was defined as oral naltrexone, acamprosate, or disulfiram pharmacy fills within 2 days of discharge.

MAIN OUTCOMES: The primary outcome was a composite of all-cause mortality or return to hospital (emergency department visits and hospital readmissions) within 30 days of discharge. Secondary outcomes included these components separately, return to hospital for alcohol-related diagnoses, and primary care or mental health follow-up within 30 days of discharge. Propensity score 3:1 matching and modified Poisson regressions were used to compare outcomes between patients who received and did not receive discharge MAUD.

RESULTS: There were 6794 unique individuals representing 9834 alcohol-related hospitalizations (median [IQR] age, 54 [46-62] years; 3205 hospitalizations among females [32.6%]; 1754 hospitalizations among Black [17.8%], 712 hospitalizations among Hispanic [7.2%], and 7060 hospitalizations among White [71.8%] patients). Of these, 192 hospitalizations (2.0%) involved discharge MAUD initiation. After propensity matching, discharge MAUD initiation was associated with a 42% decreased incidence of the primary outcome (incident rate ratio, 0.58 [95% CI, 0.45 to 0.76]; absolute risk difference, -0.18 [95% CI, -0.26 to -0.11]). These findings were consistent among secondary outcomes (eg, incident rate ratio for all-cause return to hospital, 0.56 [95% CI, 0.43 to 0.73]) except for mortality, which was rare in both groups (incident rate ratio, 3.00 [95% CI, 0.42 to 21.22]). Discharge MAUD initiation was associated with a 51% decreased incidence of alcohol-related return to hospital (incident rate ratio, 0.49 [95% CI, 0.34 to 0.71]; absolute risk difference, -0.15 [95% CI, -0.22 to -0.09]).

CONCLUSION AND RELEVANCE: In this cohort study, discharge initiation of MAUD after alcohol-related hospitalization was associated with a large absolute reduction in return to hospital within 30 days. These findings support efforts to increase uptake of MAUD initiation at hospital discharge.