Publications by authors named "Siva Narayanan"

Background: Current assessments on topical treatment attributes in actinic keratosis (AK) do not evaluate safety, effectiveness, and satisfaction from both clinician and patient perspectives, creating an unmet need for more comprehensive AK-specific measures that fully capture the patient experience.

Objective: To develop an actinic keratosis-specific expert panel questionnaire (AK-EPQ) of patient-reported outcomes and clinician-reported outcomes for use in research studies.

Methods: Using interviews of patients with AK and targeted literature reviews, a 9-person consensus panel of dermatologists with expertise in AK treatment was convened to develop the AK-EPQ to assess AK-specific patient-reported outcomes and clinician-reported outcomes.

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Background: The Patient-Reported Outcomes in Actinic Keratosis (PROAK) study evaluated patient- and clinician-reported outcomes (PRO; ClinRO) during 24 weeks of follow-up among adult patients with actinic keratosis (AK) on the face or scalp who were administered tirbanibulin 1% ointment in real-world community practices in the United States.  Methods: Quality of life (QoL) was assessed by Skindex-16 at week (W) 8. Additionally, effectiveness (Investigator Global Assessment [IGA]), PRO and ClinRO (Treatment Satisfaction Questionnaire for Medication and Expert Panel Questionnaire), safety, and tolerability were assessed at W8 and W24.

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Article Synopsis
  • Patient-reported outcomes (PROs) are being recognized as important in assessing the impact of acne vulgaris (AV), particularly with the use of sarecycline in real-world settings, which lacks existing data.
  • A study involved 253 patients aged 9 and older with moderate or severe non-nodular AV, who were treated with sarecycline for 12 weeks, demonstrating significant improvements in symptoms and psychosocial impacts as measured by the Acne Symptom and Impact Scale.
  • Results showed a 58.9% success rate in reducing AV severity and 88.1% physician satisfaction, with some patients reporting side effects, highlighting the efficacy of oral antibiotic treatment in managing AV symptoms.
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Article Synopsis
  • A study was conducted over 12 weeks involving 253 patients aged 9 and older with moderate to severe facial acne vulgaris (AV) who were treated with sarecycline, assessing the impact of AV on daily life using a specialized questionnaire.
  • Significant improvements were noted in emotional and social well-being, with many patients reporting reduced feelings of anger, worry, and social anxiety related to their acne.
  • Despite positive patient-reported outcomes, caregivers did not show a notable improvement in understanding their child's AV-related concerns throughout the study.
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Background: Clinical studies demonstrate that ivacaftor (IVA) improves health-related quality of life (HRQoL) in patients aged ≥6 years with cystic fibrosis (CF). The real-world impact of IVA and standard of care (SOC) in groups of patients with G551D and F508del mutations, respectively, was assessed using a survey comprising disease-specific and generic HRQoL measures.

Methods: Patients with CF aged ≥12 years, or aged 6-11 years with caregiver support, with either (1) a G551D mutation and receiving IVA (G551D/IVA) for ≥3 months, or (2) homozygous for F508del and receiving SOC before lumacaftor/IVA availability (F508del/SOC), were eligible to participate in a cross-sectional survey.

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Introduction: ACT DMD was a 48-week trial of ataluren for nonsense mutation Duchenne muscular dystrophy (nmDMD). Patients received corticosteroids for ≥6 months at entry and stable regimens throughout study. This post hoc analysis compares efficacy and safety for deflazacort and prednisone/prednisolone in the placebo arm.

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Objective: To describe ways family members assist adult patients with prescription medications at home, during medical visits and at the pharmacy.

Methods: Online survey of 400 adults (caregivers) who help another adult (care recipient) with prescription medication use. Regression modeled the contribution of caregiver communication during recipients' medical visits, evaluation of physicians' medication communication and discussions with the dispensing pharmacist on caregivers' assistance with home medication management.

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Cystic fibrosis (CF) is a life-shortening condition with no cure. Available therapies relieving the symptoms of CF are complex and time-consuming. A comprehensive review assessing adherence to different CF therapies, association of adherence with outcomes, and factors influencing adherence could inform optimal patient management strategies.

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Purpose: Due to its clinical course and often-late detection, many patients with metastatic pancreatic cancer (mPC) experience poor quality of life (QoL). This pilot project assessed real-world QoL in patients with mPC at different stages of treatment.

Methods: A cross-sectional survey was conducted in the following groups of patients with mPC: before initiation of first-line (1L) chemotherapy (no treatment); with partial response (PR) or stable disease (SD) upon receipt of ≥3 cycles of 1L nab-paclitaxel plus gemcitabine (nab-paclitaxel plus gemcitabine PR or SD); and with disease progression during ≥1L chemotherapy and not currently receiving nab-paclitaxel (≥1L PD).

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Background: The cost of cancer care in the United States continues to rise, with pressure on oncologists to provide high-quality, cost-effective care while maintaining the financial stability of their practice. Existing payment models do not typically reward care coordination or quality of care. In May 2014, the American Society of Clinical Oncology (ASCO) released a payment reform proposal (revised in May 2015) that includes a new payment structure for quality-of-care performance metrics.

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It is important to evaluate how the value of medicine is assessed, as it may have important implications for health technology and reimbursement assessments. The value equation could comprise 'incremental benefit/outcome' (relative results of care in terms of patient health, comparing the innovation to best available alternative(s)) in the numerator and 'cost' (relative costs involved in the full cycle of care (or a defined period) for the patient's medical condition, incorporating the relevant cost-offsets due to displacement of best available alternative(s)) in the denominator. This 'relative value' combined with the overall net budget impact (of including the drug in the formulary or reimbursed drug list) at the concerned population level in the given institution/region/country may better inform the usefulness of the new therapeutic option to the healthcare system.

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Objectives: To assess the impact of psoriasis on health-related quality of life (HRQoL).

Methods: An ethnographic study of patients with moderate to severe psoriasis was conducted in the US, France, Germany, Italy, Spain, UK, Brazil, and Canada to explore patients' views on treatment and the impact of psoriasis on HRQoL. Anthropologists and ethnographers spent a minimum of 5.

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Objective: To estimate the medical and productivity-related cost burden of systemic lupus erythematosus (SLE) flares and comorbidities in a commercially insured population.

Methods: Using administrative data, annual medical costs and indirect costs because of work loss were calculated for adult SLE patients, including flare severity and SLE-related comorbidity subsets, and a matched control group without SLE.

Results: Adjusted annualized medical costs were $18,952, $4305, $914, and $441 greater for SLE patients with severe, moderate, mild, and no flares, respectively, during follow-up than those of the matched controls.

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Objectives: To estimate the economic consequences of changes in disease activity on healthcare resource utilization (HRU) and costs.

Methods: A retrospective longitudinal study of systemic lupus erythematosus (SLE) patients receiving care in a regional integrated health delivery system in the US from 01/2004 through 03/2011 was conducted using electronic health records, medical chart reviews, and claims. Eligible patients were ≥18 years old, with ≥1 rheumatologist-confirmed SLE diagnosis and ≥1 eligible rheumatology encounter.

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Article Synopsis
  • The study aimed to assess the healthcare resource use and costs associated with herpes zoster (HZ) among elderly individuals in skilled nursing facilities (SNF).
  • Over four months, the research found that patients with HZ experienced higher hospitalization rates (20.5%) compared to those without HZ (14.4%), resulting in increased hospitalization episodes and longer stays.
  • The additional medical costs for patients with HZ were estimated to range from $1,079 to $1,673, highlighting the significant financial impact of HZ on the healthcare system in SNFs.
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Purpose: The purpose of this study was to estimate hospital and long-term-care costs resulting from falls in long-term-care facilities (LTCFs).

Design And Methods: The study used a retrospective, pre/post with comparison group design. We used matching, based on propensity scores, to control for baseline differences between fallers and non-fallers.

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Physicians routinely consider modifying antiretroviral therapy (ART) regimen for their patients with HIV. Little is known about the factors associated with patients' willingness to accept providers' recommended ART changes. This multicenter prospective observational study examined factors associated with willingness to accept ART changes recommended by their providers among HIV-infected adults from six urban outpatient HIV clinics.

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Objectives: To examine the management of urinary incontinence (UI) among nursing home (NH) residents in the United States, particularly drug therapy for UI in those who may be suitable candidates for such treatment based on their functional status.

Design: Retrospective analysis of admissions (between January 2, 2002, and December 31, 2003) to a total of 373 skilled nursing facilities and assisted living centers operated by a single provider of long-term care.

Participants: Residents identified as incontinent according to at least one Minimum Data Set (MDS) assessment during their NH stay who had adequate mobility and/or cognitive ability to toilet, as determined by a toileting score of < or =2 on the 5-point MDS scale, and/or a score of < or =3 on the 7-point scale, the Cognitive Performance Score (CPS).

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Objective: To evaluate whether or not rivastigmine use is associated with a decrease in the initiation of antipsychotic drug therapy among nursing home residents in the United States.

Methods: A retrospective analysis was performed using Minimum Data Set data and physician order files for newly admitted residents of 452 US nursing facilities from 2000 through 2002. The rivastigmine group included those who were diagnosed with Alzheimers disease (AD) and began rivastigmine treatment within 30 days of diagnosis.

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Objectives: To provide a descriptive overview of the elderly, nursing home patient population with urinary incontinence (UI).

Methods: This study was a descriptive, cross-sectional database analysis (2002-2003) examining UI prevalence, demographic and clinical characteristics of UI patients, and UI pharmacotherapy prevalence in the nursing home setting.

Results: Of the 29 645 eligible subjects, 8995 experienced some level of UI at the time the minimum data set (MDS) was completed (30%).

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This study compared clinical outcomes and nursing labor costs associated with (a) balsam Peru, hydrogenated castor oil, and trypsin (BCT) ointment; (b) BCT + Other; and (c) Other treatments in 2014 wound episodes occurring in 861 patients (mean 2.34 wounds/patient). Treatment with BCT ointment or BCT + Other was associated with a higher healing rate (P < .

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Objective: To assess asthma control and patient satisfaction among pediatric users of montelukast in a clinical practice setting.

Study Design: A prospective study of 175 children with persistent asthma, 6 to 14 years of age, who initiated treatment with montelukast between Feb-1998 and Aug-1998, in primary care and pediatric offices across the United States. Data on asthma control and satisfaction with treatment was collected in physicians' offices after enrollment and by survey to the patients' homes at 1 month of treatment.

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