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Biomedical subjects

L Fogg

Publications and source records attributed to L Fogg.

At least 19 recordsLinked to original sources

Clinical trials in the 21st century: the case for participant-centered research.

Informed consumers of the 21st century increasingly will be hesitant to enroll in randomized clinical trials (RCTs) because they will be unwilling to (a) submit to random assignment; (b) complete assessments that are too lengthy, intrusive, or irrelevant; or (c) comply with protocols that do not meet their needs. Research centered on the needs and interests of participants is likely to engender greater participation and commitment than are traditional RCTs. Recommendations for making clinical trials more participant centered include: (a) expanding our conceptualizations of study validity, (b) involving consumers as advisers in the development and execution of clinical trials, and (c) offering participants reasonable alternatives to random assignment.

Humans↗

Rural and urban Midwestern United States contraception practices.

To address a paucity of demographic data on rural United States contraception practices, 370 randomly selected menstruating women, age 13-55 years, living in rural and urban Illinois and Missouri answered interview questions. Women with relatively few children and living in urban areas were likely to practice contraception more than those with relatively few children and living in rural areas, p < 0.01. In Illinois, more rural (23%) than urban (2%) women chose sterilization, p < 0.01. Single status was more frequent in Chicago (41%) and rural Missouri (32%) than in rural Illinois (19%), p < 0.002, and extant research links single status with risk for HIV and other sexually transmitted diseases (STDs). Condom use did not differ significantly by locale, p > 0.05. Urban-rural differences in contraception practices may be a function of life style choices (e.g. urban women may practice contraception to postpone having children, whereas rural women may practice contraception to prevent having more children after families are complete). Results do not strongly support that locale differences in contraception practices are a function of concern about contracting STDs.

Adult↗

Threats to validity in randomized clinical trials.

The purposes of this article are to present an overview of randomized clinical trials (RCTs) and describe some of the methodological problems inherent in using RCTs in nursing research. Many nursing intervention studies are fraught with problems that defy the stringent control criteria required for RCTs, leading to biased estimates of intervention efficacy. Five threats to validity in RCTs are presented, including problems related to (a) differential dropout, (b) random assignment, (c) identifying and maintaining an adequate control condition, (d) nonadherence to research protocols, and (e) assessment of clinically meaningful change. Three strategies are recommended for addressing some of the problems posed by RCTs and improving inference.

Clinical Nursing Research↗

Discipline across generations.

The objective of this qualitative research was to understand how parents decide which discipline practices they will repeat from their childhoods. Participants chose not to repeat punishment practices when a strong, negative effect was remembered. However, some parents repeated physical punishment practices even when a strong, negative effect was remembered if they believed the practices were effective or culturally valued, if they were under stress, or if the parents lacked alternative strategies.

Adult↗

Finding meaning through caregiving: development of an instrument for family caregivers of persons with Alzheimer's disease.

Systematic assessment of the positive aspects of caregiving has been limited by the lack of comprehensive, theoretically based, and psychometrically sound measures. This study developed and tested a measure primarily designed to assess positive aspects and ways that caregivers find meaning through their experience of caring for a person with dementia. The measure has three subscales: Loss/Powerlessness, which identifies difficult aspects of caregiving; Provisional Meaning, which identifies how caregivers find day-to-day meaning; and Ultimate Meaning, which identifies philosophical/religious/spiritual attributions associated with the experience of caregiving. The measure is useful for understanding the close relationship between both the difficult and positive aspects of caregiving and also may be used to identify a caregiver's strengths in clinical and research settings.

Adaptation, Psychological↗

Behavior problems among young children in low-income urban day care centers.

The purposes of this study were to describe: (a) the frequency and correlates of behavior problems among a sample of 2- and 3-year-old children from low-income families as seen by their parents and day care teachers, (b) the degree to which parents and teachers agree about the children's behavior problems in their respective contexts, and (c) family characteristics that distinguish toddlers with behavior problems both at home and at day care from the rest of the sample. Parents of 133 toddlers from 10 Chicago day care centers completed measures of child behavior problems, child behavioral intensity, parenting self-efficacy, discipline strategies, and stress. Children's day care teachers also completed a measure of child behavior problems. Parent-reported behavior problems were associated with higher child behavioral intensity, greater parent stress, lower self-efficacy, and discipline strategies characterized by irritability, coercion, and inconsistency. Parent and teacher ratings on child behavior were correlated for boys' behavior problems only. Parents reported more child behavior problems than teachers. Approximately 8% of the children were rated as having behavior problems at home and at day care. Although most of the children are functioning well, many of these parents and toddlers are engaged in highly stressful and coercive relationships.

Chicago↗

The long-term efficacy of a behavioral parent training intervention for families with 2-year-olds.

The effectiveness of a behavioral parent training (BPT) intervention for improving maternal self-efficacy, maternal stress, and the quality of mother-toddler interactions has been demonstrated (Gross, Fogg, & Tucker, 1995). The 1-year follow-up of the 46 parents of toddlers (assigned to an intervention or comparison group) who participated in that study is reported. It was hypothesized that (a) BPT would lead to enduring positive changes in parenting self-efficacy, parenting stress, and parent-toddler interactions; and (b) the amount of parent participation in the intervention would be correlated with greater gains in parent-child outcomes at 1 year. All the families were retained and significant gains in maternal self-efficacy, maternal stress, and mother-child interactions were maintained. Minimal BPT effects were found for fathers. BPT dosage was related to reductions in mother critical statements and negative physical behaviors at 1-year postintervention. The findings are consistent with self-efficacy theory and support parenting self-efficacy as a target for BPT in families of young children.

Adult↗

Relationships between cognitive behavioral techniques, temperament, observed distress, and pain reports in children and adolescents during lumbar puncture.

A limited number of studies have examined relationships between temperament and children's/adolescents' responses to painful procedures and have identified several different dimensions of temperament that are related to children's pain response. The focus of these studies was one-time, acute pain experiences, such as immunization and postoperative pain. In this study, children and adolescents' responses to a moderately painful procedure, lumbar puncture, were examined as they related to temperament. Nineteen children and adolescents, ages 4 to 18 years, who were receiving treatment for cancer, were participants in this study. Parents completed one of three age-appropriate temperament questionnaires at the beginning of the study and prior to the parent and child learning cognitive-behavioral techniques. Behavior during the procedure was videotaped at baseline, and for up to four visits after baseline and coded using the Observation Scale of Behavioral Distress (OSBD). Pain reports were collected after the procedure using the Oucher pain self-report scale. Improvement in the level of behavioral distress was determined by examining the differences between pre- and post-treatment OSBD scores and self-reported pain ratings. There was a significant improvement in pain reports over the 5-month period, but behavioral distress did not change significantly. At the baseline visit, the temperament dimensions of more positive mood, lower activity, less persistence, and lower distractibility were related to higher pain reports, but not behavioral distress. However, after 5 months, only the dimension of positive mood was significantly correlated with improvement in pain reports. The amount of time parents and children practiced the techniques, their comfort with the techniques and their perceived effectiveness also were correlated with positive mood.

Adolescent↗

Suicide: a four-pathway clinical-biochemical model.

This chapter, based on a review of recent research as well as data presented in this report, proposes four hypothetical pathways leading to suicide in clinical depression: (1) an acute pathway involving severe anxiety/agitation associated with high brain corticotrophin-releasing factor (CRF or CRH) levels, (2) trait baseline and reactivity hopelessness, (3) severe anhedonia, and (4) trait impulsiveness associated with low brain serotonin turnover and low total cholesterol as a possible peripheral correlate. Clinical research showing evidence for acute versus chronic high-risk suicide factors and other studies linking severe anxiety/agitation to high CRF levels will be presented as associated with acute suicidal risk, which is potentially reversible with recognition and treatment. Evidence for anhedonia severity as a risk factor and trait, as well as evidence that baseline hopelessness and sensitivity are traits related to chronic suicide risk, will be presented. Finally, evidence relating low serum cholesterol to suicide in depressed inpatients will be presented in the context of literature suggesting a relationship between low serum cholesterol and violent death and suicide in population studies. Data suggesting a relationship between low serum cholesterol and decreased CSF 5-HIAA, suggesting reduced serotonin turnover, will be presented, in light of prior studies relating low CSF 5-HIAA and violent suicide. These data taken together suggest four pathways to suicide that are worth investigating in order to better understand the mechanisms leading to this behavior. Future possibilities and applications of these findings are discussed.

Cholesterol↗

Who are these patients and what services do they receive?

The purpose of this study was to develop baseline information concerning older adults who use psychiatric home healthcare services, identify critical components of interventions provided over the course of treatment, and identify outcomes associated with this type of home care. This review focused on patients 65 years or older with Medicare coverage and a primary or secondary diagnosis of depression. Retrospectively, 107 charts were reviewed, beginning with those of patients most recently discharged. These psychiatric home care patients had complex healthcare problems, required family caregivers and multiple home healthcare services, and experienced variable outcomes. These findings support the need for more information regarding specific interventions provided to patients and their family caregivers and what effect these interventions have on patient and caregiver outcomes.

Aged↗

The efficacy of parent training for promoting positive parent-toddler relationships.

The effectiveness of a parent training program for promoting positive parent-child relationships was examined among families of 2-year-olds. Forty-six mothers and fathers and their toddlers were assigned to either an intervention or comparison group. Intervention group parents participated in a 10-week program that focused on principles for effectively interacting with their toddlers. Parents completed measures of parenting self-efficacy, depression, stress, and perceptions of their toddler's behaviors and were videotaped playing with their toddlers preintervention, postintervention, and 3 months following the intervention. Repeated measures ANOVAs showed that the parent training program led to significant increases in maternal self-efficacy, decreases in maternal stress, and improvements in the quality of mother-toddler interactions. No significant effects were found among fathers. Explanations for obtaining different outcomes for mothers and fathers are discussed and directions for future research are recommended.

Adult↗

Physiological outcomes of aerobic exercise training in hemiparetic stroke patients.

BACKGROUND AND PURPOSE: In hemiparetic individuals, low endurance to exercise may compound the increased energy cost of movement and contribute to poor rehabilitation outcomes. The purpose of this investigation was to describe how hemiparetic stroke patients responded to intense exercise and aerobic training. METHODS: Forty-two subjects were randomly assigned to an exercise training group or to a control group. Treatments were given three times per week for 10 weeks in similar laboratory settings. Baseline and posttest measurements were made of maximal oxygen consumption, heart rate, workload, exercise time, resting and submaximal blood pressures, and sensorimotor function. RESULTS: Only experimental subjects showed significant improvement in maximal oxygen consumption, workload, and exercise time. Improvement in sensorimotor function was significantly related to the improvement in aerobic capacity. After treatment, experimental subjects showed significantly lower systolic blood pressure at submaximal workloads during the graded exercise test. CONCLUSIONS: We conclude that hemiparetic stroke patients may improve their aerobic capacity and submaximal exercise systolic blood pressure response with training. Sensorimotor improvement is related to the improvement in aerobic capacity.

Adult↗

A longitudinal model of maternal self-efficacy, depression, and difficult temperament during toddlerhood.

The purpose of this study was to test a model of maternal self-efficacy during toddlerhood using a longitudinal sequential design. Participants were 126 mothers of 1-year olds (Cohort 1) and 126 mothers of 2-year olds (Cohort 2) who completed questionnaires measuring maternal self-efficacy, depression, and perceived difficult toddler temperament three times over 1 year. Data were analyzed using structural equation modeling and maximum likelihood estimation. Findings support a model whereby (a) the more depressed the mother feels, the more likely she is to rate her toddler's temperament as difficult, (b) the more difficult the child's temperament is perceived to be, the lower the mother's estimates of her parenting self-efficacy, (c) the lower the mother's self-efficacy, the greater her depression, and (d) the more depressed the mother feels at one point in time, the more likely she is to remain depressed 6 months later. Implications of the findings are discussed as they relate to self-efficacy theory and nursing intervention with parents of difficult toddlers.

Adult↗

The role of support surfaces and patient attributes in preventing pressure ulcers in elderly patients.

Nurses caring for elderly patients often need to select support surfaces that reduce the likelihood of pressure ulcers, but there is little information about the effectiveness of different support surfaces. This randomized trial compared two support surfaces and investigated patient attributes related to the risk of developing a pressure ulcer. Eighty-four elderly patients were nursed on a convoluted or solid foam overlay and assessed three times a week for pressure ulcers. Stepwise Cox proportional hazards regression revealed a statistically significant relationship between the risk of developing a pressure ulcer and the variables mobility and type of support surface.

Aged↗

Designing interventions in psychosocial research.

There is little guidance in the literature on how to design cost-effective interventions for preventing or treating psychosocial health care problems. Four sources of information are described for developing interventions that are based on a strong theoretical and empirical foundation: (1) an explicit theory for intervention, (2) supporting descriptive data, (3) an evaluation of possible intervention strategies that are consistent with the theory and the supporting data, and (4) focus groups to examine the feasibility and external validity of the intervention before formal testing.

Child Behavior Disorders↗

Assessments of astronaut effectiveness.

This study examined the reliability and convergent validity of three methods of peer and supervisory ratings of the effectiveness of individual NASA astronauts and their relationships with flight assignments. These two techniques were found to be reliable and relatively convergent. Seniority and a peer-rated Performance and Competence factor proved to be most closely associated with flight assignments, while supervisor ratings and a peer-rated Group Living and Personality factor were found to be unrelated. Results have implications for the selection and training of astronauts.

Aerospace Medicine↗

Two types of thought disorder and lateralized neuropsychological dysfunction.

This report examined positive and negative thought disorder in relation to medication status and cerebral lateralization measures obtained from the Halstead-Reitan Neuropsychological Battery and Wechsler Adult Intelligence Scale in a sample of 59 patients with schizophrenia, schizoaffective and manic disorders, and unspecified functional psychoses. Discriminant function analyses of comparable left- and right-hemisphere variables from the neuropsychological tests were examined for both types of thought disorder, in which presence or absence of psychotropic medications was included as a variable in each analysis. Results indicated a relationship between positive thought disorder and left- but not right-hemisphere variables. Both the left- and right-hemisphere variables were related to negative thought disorder, and these relationships were influenced by the global measures of verbal and performance IQ as well as by medication status. These findings provide qualified support for the left-hemisphere-dysfunction hypothesis, insofar as it is associated specifically with positive thought disorder. Diffuse or bilateral cerebral impairment is more characteristic of negative thought disorder; however, medication status is also equivalent to neuropsychological variables in influencing this relationship.

Adult↗

Prognostic significance of cerebral status: dimensions of clinical outcome.

This report examines the relationship between a set of neurobehavioral predictor variables (premorbid cognitive-perceptual abilities, sensorimotor functions, and complex integrative skills) and three dimensions of clinical outcome (social outcome, work functioning, and rehospitalization) 2 years after discharge from inpatient treatment for a group of psychiatric disorders. Results indicated the strongest relationship was between premorbid ability levels and work performance, particularly maintaining stability of employment or work role function. This finding is discussed from the standpoint of neurological processes underlying early acquisition of basic cognitive-perceptual skills in the prediction of outcome.

Adult↗