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result(s) for
"Amaral, Christina M."
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A Simple Single-Item Rating Scale to Measure Medication Adherence: Further Evidence for Convergent Validity
by
Macy, Rene
,
Kalichman, Moira O
,
Cherry Chauncey
in
Adherence
,
Clinical research
,
Computerization
2009
Background: Self-report measures of medication adherence are inexpensive and minimally intrusive. However, the validity of self-reported adherence is compromised by recall errors for missed doses and socially desirable responding. Method: Examined the convergent validity of 2 self-report adherence measures administered by computerized interview: (a) recall of missed doses and (b) a single-item visual analogue rating scale (VAS). Adherence was also monitored using unannounced phone-based pill counts that served as an objective benchmark. Results: The VAS obtained adherence estimates that paralleled unannounced pill counts (UPCs). In contrast, self-reported recall (SR-recall) of missed medications consistently overestimated adherence. Correlations with participant characteristics also suggested that the computer-administered VAS was less influenced by response biases than SR-recall of missed medication doses. Conclusions: A single-item VAS offers an inexpensive and valid method of assessing medication adherence that may be useful in clinical as well as research settings.
Journal Article
Intentional Non-Adherence to Medications among HIV Positive Alcohol Drinkers: Prospective Study of Interactive Toxicity Beliefs
by
Eaton, Lisa
,
Kalichman, Moira O.
,
Cherry, Chauncey
in
Adolescent
,
Adult
,
Alcohol Drinking - psychology
2013
ABSTRACT
BACKGROUND
Antiretroviral therapy (ART) adherence is key to successful treatment of HIV infection and alcohol is a known barrier to adherence. Beyond intoxication, ART adherence is impacted by beliefs that mixing alcohol and medications is toxic.
PURPOSE
To examine prospective relationships of factors contributing to intentional medication non-adherence when drinking.
METHODS
People who both receive ART and drink alcohol (
N
= 178) were enrolled in a 12-month prospective cohort study that monitored beliefs about the hazards of mixing ART with alcohol (interactive toxicity beliefs), alcohol consumption using electronic daily diaries, ART adherence assessed by both unannounced pill counts and self-report, and chart-abstracted HIV viral load.
RESULTS
Participants who reported skipping or stopping their ART when drinking (
N
= 90, 51 %) demonstrated significantly poorer ART adherence, were less likely to be viral suppressed, and more likely to have CD4 counts under 200/cc
3
. Day-level analyses showed that participants who endorsed interactive toxicity beliefs were significantly more likely to miss medications on drinking days.
CONCLUSIONS
Confirming earlier cross-sectional studies, the current findings from a prospective cohort show that a substantial number of people intentionally skip or stop their medications when drinking. Interventions are needed to correct alcohol-related interactive toxicity misinformation and promote adherence among alcohol drinkers.
Journal Article
Association Between Health Literacy and HIV Treatment Adherence: Further Evidence from Objectively Measured Medication Adherence
by
Pope, Howard
,
Flanagan, Jody
,
Kalichman, Moira O
in
Adherence
,
Antiretroviral drugs
,
Antiretroviral therapy
2008
Background. People with lower-health literacy are vulnerable to health problems. Studies that have examined the association between literacy and medication adherence have relied on self-reported adherence, which is subject to memory errors, perhaps even more so in people with poor literacy. Purpose. To examine the association between health literacy and objectively assessed HIV treatment adherence. Methods. Men and women (N = 145) receiving antiretroviral therapy completed a test of health literacy and measures of common adherence markers. Medication adherence was monitored by unannounced pill counts. Results. Median adherence was 71%; participants with lower-health literacy also demonstrated poorer adherence compared to participants with higher literacy. Hierarchical regression showed literacy predicted adherence over and above all other factors. Sensitivity tests showed the same results for 80% and 90% adherence. Conclusions. The association between literacy and adherence appears robust and was confirmed using an objective measure of medication adherence.
Journal Article
Viral Suppression and Antiretroviral Medication Adherence Among Alcohol Using HIV-Positive Adults
by
Eaton, Lisa
,
Kalichman, Moira O.
,
Cherry, Chauncey
in
Adult
,
Alcohol Drinking - epidemiology
,
Alcohol use
2014
Background
Substance use is a known predictor of poor adherence to antiretroviral therapies (ART) in people living with human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome. Less studied is the association between substance use and treatment outcomes, namely, suppression of HIV replication.
Methods
Adults living with HIV (
N
= 183) who reported alcohol use in the previous week and receiving ART were observed over a 12-month period. Participants completed computer interviews, monthly unannounced pill counts to monitor ART adherence, and daily cell-phone delivered interactive-text assessments for alcohol use. HIV viral load was collected at baseline and 12-month follow-up from medical records. Analyses compared participants who had undetectable HIV viral loads at baseline and follow-up (sustained viral suppression) to those with unsustained viral suppression. Analyses also compared participants who were adherent to their medications (>85 % pills taken) over the year of observation to those who were nonadherent.
Results
Fifty-two percent of participants had unsustained viral suppression; 47 % were ART nonadherent. Overall results failed to demonstrate alcohol use as a correlate of sustained viral suppression or treatment adherence. However, alcohol use was associated with nonadherence among participants who did not have sustained viral suppression; nonadherence in unsustained viral suppression patients was related to drinking on fewer days of assessment, missing medications when drinking, and drinking socially.
Conclusions
Poor HIV treatment outcomes and nonadherence were prevalent among adults treated for HIV infection who drink alcohol. Drinking in relation to missed medications and drinking in social settings are targets for interventions among alcohol drinkers at greatest risk for poor treatment outcomes.
Journal Article
Integrated Behavioral Intervention to Improve HIV/AIDS Treatment Adherence and Reduce HIV Transmission
by
Swetzes, Connie
,
Eaton, Lisa
,
Pope, Howard
in
Acquired immune deficiency syndrome
,
Adherence
,
Adult
2011
Objectives. We conducted a randomized clinical trial to test an integrated behavioral intervention designed to enhance using HIV treatment as prevention by improving medication adherence, reducing risks for other sexually transmitted infections, and minimizing risk compensation beliefs. Methods. Individuals living with HIV/AIDS (n = 436) participated in a randomized clinical trial testing an intensive behavioral intervention aimed at reducing HIV transmission risks compared with an attention control condition. We used unannounced pill counts to monitor antiretroviral therapy adherence and computerized interviews to measure risk behaviors. Results. The integrated transmission risk reduction intervention demonstrated increased antiretroviral therapy adherence and less unprotected intercourse with nonseroconcordant partners at 3- and 6-month follow-ups as well as fewer new sexually transmitted infections diagnosed over the 9-month follow-up period (adjusted odds ratio = 3.0; P < .05; 95% confidence interval = 1.01, 9.04). The integrated intervention also reduced behavioral risk compensation beliefs. Conclusions. A theory-based integrated behavioral intervention can improve HIV treatment adherence and reduce HIV transmission risks. HIV treatment as prevention should be bundled with behavioral interventions to maximize effectiveness.
Journal Article
Adherence to Antiretroviral Therapy Assessed by Unannounced Pill Counts Conducted by Telephone
by
Eaton, Lisa
,
Pope, Howard
,
Flanagan, Jody
in
Acquired immune deficiency syndrome
,
Adult
,
AIDS
2007
Unannounced pill counts conducted in patients' homes is a valid objective method for monitoring medication adherence that is unfortunately costly and often impractical. Conducting unannounced pill counts by telephone may be a viable alternative for objectively assessing medication adherence.
To test an unannounced pill count assessment of adherence conducted by telephone.
HIV-positive men and women (N = 77) in Atlanta GA completed an unannounced telephone-based pill count immediately followed by a pill count conducted in an unannounced home visit.
A high degree of concordance was observed between phone and home-based number of pills counted (Intraclass correlation, ICC = .997, 95% CI .995-.998, P < .001) and percent of pills taken (ICC = .990, 95% CI .986-.992, P < .001). Concordance between adherence above/below 90% and phone/home counts was 95%, Kappa coefficient = .995. Concordance between pill counts was not influenced by participant education or health literacy and was maintained when the data were censored to remove higher levels of adherence. Analyses of discordant pill counts found the most common source of error resulted from overcounted doses in pillboxes on the telephone.
Unannounced phone-based pill counts offer an economically and logistically feasible objective method for monitoring medication adherence.
Journal Article
Food insecurity and antiretroviral adherence among HIV positive adults who drink alcohol
by
Eaton, Lisa
,
McKerney, Megan
,
Kalichman, Moira O.
in
Acquired immune deficiency syndrome
,
Adherence
,
Adults
2014
Food insecurity is associated with HIV treatment non-adherence and poor health outcomes for people living with HIV/AIDS. Given the poor nutritional status common to people who drink alcohol, food insecurity may be particularly problematic for HIV positive individuals who drink alcohol. To examine food insecurity among HIV positive men and women who drink alcohol and its association with antiretroviral therapy (ART) adherence, health outcomes and health service utilization. Adults living with HIV (N = 183) in Atlanta, Georgia who reported alcohol use in the previous week and were receiving ART participated in a 12-month cohort. Participants were recruited from infectious disease clinics and social services to complete computerized interviews, monthly-unannounced pill counts to monitor ART adherence, and daily cell-phone delivered interactive-text assessments for alcohol use. Forty-three percent of participants experienced food insecurity during at least one month of the study period. Food insecurity was independently associated with suboptimal ART adherence and less suppressed HIV viral load over. Individuals who experienced food insecurity also had histories of more medical and psychiatric hospitalizations, and greater mental health problems. Food insecurity is prevalent among alcohol using people receiving ART and food insecurity is associated with treatment non-adherence, poor health outcomes, and increased medical and psychiatric hospitalizations.
Journal Article
Risk of adverse pregnancy and infant outcomes associated with prenatal Zika virus infection: a post-epidemic cohort in Central-West Brazil
by
Brickley, Elizabeth B.
,
da Costa, Paulo Sergio Sucasas
,
de Rezende Feres, Valeria Christina
in
692/308/3187
,
692/699/255
,
Atrophy
2023
This study aimed to estimate the risks of adverse infant outcomes in the first year of life related to prenatal Zika virus (ZIKV) exposure. A prospective cohort of pregnant women with rash was recruited in Central-West Brazil in a post-epidemic period (January 2017 to April 2019). We evaluated participants’ medical histories and performed ZIKV diagnostic testing using molecular (reverse transcription polymerase chain reaction [RT-PCR]) and serologic (immunoglobulin [Ig]M and plaque reduction neutralization tests [PRNT
90
]) assays. The ZIKV-positive group included both RT-PCR-confirmed cases as well as IgM and/or PRNT
90
-positive probable cases. Children were evaluated at birth and in the first 12 months of life. Transfontanellar ultrasound, central nervous system computed tomography, eye fundoscopy and retinography were performed. We estimated the absolute risk and 95% confidence interval (95% CI) of adverse infant outcomes among confirmed prenatally ZIKV-exposed children. Among 81 pregnant women with rash, 43 (53.1%) were ZIKV infected. The absolute risk of microcephaly among offspring of ZIKV-infected pregnant women was 7.0% (95% CI: 1.5–19.1), including the two cases of microcephaly detected prenatally and one detected postnatally. In total, 54.5% (95% CI: 39.8–68.7) of children in the ZIKV-exposed group had at least one ophthalmic abnormality, with the most frequent abnormalities being focal pigmentary mottling and chorioretinal atrophy or scarring. Our findings reinforce the importance of long-term monitoring of prenatally ZIKV-exposed children born apparently asymptomatic for Congenital Zika Syndrome.
Journal Article
PML/RARα and FLT3-ITD Induce an APL-like Disease in a Mouse Model
by
Kelly, Louise M.
,
Williams, Ifor R.
,
Gilliland, D. Gary
in
Biological Sciences
,
Disease models
,
Genetic mutation
2002
Acute promyelocytic leukemia (APL) cells invariably express aberrant fusion proteins involving the retinoic acid receptor α (RARα). The most common fusion partner is promyelocytic leukemia protein (PML), which is fused to RARα in the balanced reciprocal chromosomal translocation, t(15;17)(q22:q11). Expression of PML/RARα from the cathepsin G promoter in transgenic mice causes a nonfatal myeloproliferative syndrome in all mice; about 15% go on to develop APL after a long latent period, suggesting that additional mutations are required for the development of APL. A candidate target gene for a second mutation is FLT3, because it is mutated in approximately 40% of human APL cases. Activating mutations in FLT3, including internal tandem duplication (ITD) in the juxtamembrane domain, transform hematopoietic cell lines to factor independent growth. FLT3-ITDs also induce a myeloproliferative disease in a murine bone marrow transplant model, but are not sufficient to cause AML. Here, we test the hypothesis that PML/RARα can cooperate with FLT3-ITD to induce an APL-like disease in the mouse. Retroviral transduction of FLT3-ITD into bone marrow cells obtained from PML/RARα transgenic mice results in a short latency APL-like disease with complete penetrance. This disease resembles the APL-like disease that occurs with long latency in the PML/RARα transgenics, suggesting that activating mutations in FLT3 can functionally substitute for the additional mutations that occur during mouse APL progression. The leukemia is transplantable to secondary recipients and is ATRA responsive. These observations document cooperation between PML/RARα and FLT3-ITD in development of the murine APL phenotype.
Journal Article
Concomitant Lateral Meniscal Tears in Pediatric and Adolescent Patients Undergoing Combined Medial Meniscal Ramp Lesion Repair and Anterior Cruciate Ligament Reconstruction Are Frequently Missed on MRI, Are Often Vertical or Root Tears, and Are Usually Repaired: A Multicenter Study
by
LaPrade, Robert F.
,
Allen, Christina R.
,
McKay, Scott D.
in
Cohort analysis
,
Health risks
,
Magnetic resonance imaging
2026
Background:
In pediatric and adolescent patients with medial meniscal ramp lesions (MMRLs) undergoing anterior cruciate ligament reconstruction (ACLR), the presence of concomitant lateral meniscal tears (LMTs) are not well-characterized.
Purpose:
To describe the characteristics and surgical management of concomitant LMTs in pediatric and adolescent patients undergoing MMRL repair during primary ACLR.
Study Design:
Case series; Level of evidence, 4.
Methods:
Patients <18 years old who underwent an MMRL repair during primary ACLR at 5 institutions from 2013 to 2025 were included. All MMRLs were diagnosed arthroscopically and defined as a partial or complete peripheral vertical/longitudinal tear of the posterior horn of the medial meniscus at or ≤3 mm from the meniscocapsular junction. The presence, location, and surgical management of arthroscopically identified concomitant LMTs were gathered from the operative reports. Lateral meniscus root tears (LMRTs) were categorized using the LaPrade classification. Patients with and without concomitant LMT at the time of MMRL repair during primary ACLR were compared.
Results:
In total, 189 pediatric and adolescent patients underwent an MMRL repair during primary ACLR at a mean age of 16.1 ± 1.4 years (range, 12.0-17.9 years). Concomitant LMTs were arthroscopically diagnosed in 122 (65%) patients, of which 38 (31%) were missed on the initial preoperative magnetic resonance imaging (MRI) report. Surgically, the majority of concomitant LMTs (67%) were treated with repair while 27% were treated with partial meniscectomy or observation (6%). LMTs were most frequently localized to the posterior horn (61%) or posterior root (27%). The most common LMT morphology was vertical/longitudinal (41%), followed by LMRTs (25%), complex nonroot tears (15%), radial tears (12%), and bucket-handle tears (4%). Of the 31 LMRTs identified, type 4 complex oblique root tears were most prevalent (65%), followed by type 2 complete radial root tears (26%), type 1 partial stable root tears (6%), and a type 5 bony root avulsion (3%). Significant risk factors associated with the presence of a concomitant LMT included male sex (odds ratio [OR], 1.9; 95% CI, 1.0-3.7; P = .044) and obesity (OR, 2.5; 95% CI, 1.0-6.1; P = .046).
Conclusion:
In this multicenter study, 65% of pediatric and adolescent patients undergoing MMRL repair during primary ACLR had a concomitant LMT and the majority were localized to the posterior horn and posterior root. As 31% of concomitant LMTs were missed on preoperative MRI, the posterior aspect of the lateral meniscus should be carefully evaluated at the time of surgery in pediatric patients with MMRLs. Nearly half of the concomitant LMTs identified in this cohort were LMRTs, complex tears, complete radial tears, or bucket-handle tears. Overall, surgeons should anticipate performing an additional lateral meniscal repair in nearly half of pediatric patients undergoing an MMRL repair during primary ACLR.
Journal Article